Conference Proceedings

A. Chatterjee and P. Y. Li, "HUMAN-IN-THE-LOOP MOTION CONTROL OF A TWO-DOF HYDRAULIC BACKHOE POWERED BY THE HYBRID HYDRAULIC ELECTRIC ARCHITECTURE (HHEA)", 2023 ASME/Bath Symposium on Fluid Power and Motion Control, Sarasota, FL, October 2023.

J. Wills and P. Y. Li, "ELECTRIC AND HYDRAULIC PROPEL TORQUE MODULATION FOR A COMPACT TRACK LOADER WITH THE HYBRID HYDRAULIC ELECTRIC ARCHITECTURE (HHEA)", 2023 ASME/Bath Symposium on Fluid Power and Motion Control, Sarasota, FL, October 2023.

J. K. Hartoyo, J. Voth, J. Pozo-Palacios, G. Boyce-Erickson, M. Herrera-Perez, J. Van de Ven, and P. Y. Li, "USING A NOVEL VARIABLE DISPLACEMENT LINKAGE MOTOR TO SAVE FUEL IN A COMPACT TRACK LOADER DRIVETRAIN", 2023 ASME/Bath Symposium on Fluid Power and Motion Control, Sarasota, FL, October 2023.

P. Purohit, A. Chatterjee, Nishanth, P. Strampp, P. Y. Li, E. Severson, “Design and Optimization of a Fast Switching Electromagnetic Valve Actuator for Off-highway Vehicle Hydraulic Systems”, IEEE Transportation Electrification Conference & Expo (ITEC), Detroit, June, 2023.

H. Tranquillo, J. Sonstegard, K. Kim, C.-B. Kwoen, and P. Y. Li, "Online Learning and Control of An Internal Combustion Engine for UAS Using Simplex Tessellation and Recursive Least Squares", 2023 American Control Conference, San Diego, CA, May 2023. 

Z. Chen, J. Wu, L. Shen, and P. Y. Li, "A Kalman Filter Approach to the Estimation and Reconstruction of Ocean Wave Fields", 2023 American Control Conference, San Diego, CA, May 2023.

P. Y. Li, "Modeling and Analysis of Linear Digital Hydraulic Transformers (DHT)", 11th Workshop on Digital Fluid Power (DPF 2022), September 19-20, 2022, Edinburgh, Scotland.

E. Sand and P. Y. Li, "Incorporating a Rotatable Valve Cam to Improve The efficiency of a Hydraulic Motor in an Inline Hydromechanical Transmission (i-HMT)", 2022 Bath/ASME Symposium on Fluid Power and Motion Coontrol (FPMC 2022), Sept 16-19, 2022. Bath, U.K. 

J. Wills and P. Y. Li, "Accumulator Sizing for the Hybrid Hydraulic-Electric Architecture (HHEA) Using Dynamic Programming," 2022 Bath/ASME Symposium on Fluid Power and Motion Coontrol (FPMC 2022), Sept 16-19, 2022. Bath, U.K. 

J. Wills, A. Keester, and P.Y.Li, "A POWER TAKE-OFF (PTO) FOR WAVE ENERGY CONVERTERS BASED ON THE HYBRID HYDRAULIC-ELECTRIC ARCHITECTURE (HHEA)", 2021 ASME/Bath Symposium on Fluid Power and Motion Control (FPMC 2021), Oct. 19-21, 2021. (Virtual) 

A. Khandekar, J. Wills, M. Wang, and P. Y. Li, "Incorporating Valve Switching Losses Into a Static Optimal Control Algorithm for the Hybrid Hydraulic-Electric Architecture", 2021 ASME/Bath Symposium on Fluid Power and Motion Control (FPMC 2021), Oct. 19-21, 2021. (Virtual) 

A. Chatterjee and P.Y.Li, "HIL Testbed and Motion Control Strategy for the Hybrid Hydraulic Electric Architecture (HHEA)", 2021 ASME/Bath Symposium on Fluid Power and Motion Control (FPMC 2021), Oct. 19-21, 2021. (Virtual)

J. Barkei and P. Y. Li, "IMPROVING THE EFFICIENCY OF A COMPACT INLINE HYDRO-MECHANICAL TRANSMISSION (i-HMT) AT LOCK-UP", 2021 ASME/Bath Symposium on Fluid Power and Motion Control (FPMC 2021), Oct. 19-21, 2021. (Virtual)

J. Floresch and P.Y.Li, "Human Gesture Robot Control Using a Camera/Accelerometer-in-Palm Sensor", 2021 Modeling Estimation and Control Conference (MECC), Oct 24-27, 2021 (Virtual) 

P.Y.Li, "Towards a Control Oriented Model of Waves and Wave Energy Converters" - Working paper

A. Wang and P.Y.Li, "A 3D-Printed Low-Cost 6-DOF Human Interaction Force Sensor for a Haptic Interface", 2021 Advanced Intelligent Mechatronics (AIM), July 12-16, 2021 (Virtual).

A. Khandekar, J. Siefert and P.Y. Li, "Co-Design of a Fully Electric Hybrid Hydraulic-Electric Architecture (FE-HHEA) for Off-Road Mobile Machines", 2021 American Control Conference, May 25-28, 2021 (Virtual).

J. K. Hartoyo and P. Y. Li, "Optimal Control and Architecture Design Optimization for Hydraulic Drive Train of a Compact Track Loader", 2021 American Control Conference, May 25-28, 2021 (Virtual).

J. Siefert and P. Y. Li, "Optimal Control and Energy-Saving Analysis of Common Pressure Rail Architectures: HHEA and STEAM",  2020 Bath/ASME Symposium on Fluid Power and Motion Control, FPMC2020-2801, September 9-11, Bath, UK (virtual) 2020.

P. Y. Li and J. Barkei, "Hydraulic Effort and the Efficiencies of Pumps and Motors with Compressible Fluid", 2020 Bath/ASME Symposium on Fluid Power and Motion Control, FPMC2020-2801, September 9-11, Bath, UK (virtual) 2020.

A. Chatterjee* and P. Y. Li, "Motion Control of Hydraulic Actuators in the Presence of Discrete Pressure Rail Switching", 2020 IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM), Boston, USA, (virtual) July 6-9, 2020.

J. Siefert and P. Y. Li, "Optimal Operation of a Hybrid Hydraulic Electric Architecture (HHEA) for Off-Road Vehicles Over Discrete Operating Decisions",  ACC 2020, Denver, USA, (virtual) July 1-3, 2020.

P. Y. Li, "Self-Sensing Dual Push-Pull Solenoids using a Finite Dimension Flux Observer", ACC 2020, Denver, USA, (virtual) July 1-3, 2020. [Video]

V. Durbha and P. Y. Li*, “Energetically Passive Bilateral Teleoperation of a Pneumatic Crawling Robot”, FPMC2019-1681, ASME/Bath Symposium on Fluid Power and Motion Control, 2019.

P. Y. Li*, J. Siefert and D. Bigelow, “A Hybrid Hydraulic-Electric Architecture for Off-road Mobile Machines”, FPMC2019-1628, ASME/Bath Symposium on Fluid Power and Motion Control, 2019.

A. Montzka, N. Epstein, M. B. Rannow, T. R. Chase* and P. Y. Li, “Experimental Testing of a Variable Displacement Pump/Motor that uses a Hydro-mechanically Timed Digital Valving Mechanism to  Achieve Partial Stroke Piston Pressurization (PSPP)”, FPMC2019-1693, ASME/Bath Symposium on Fluid Power and Motion Control, 2019.

G. Boyce-Erickson*, N. Fulbright, J. Voth, T. Chase, P.Y. Li and J. Van de Ven, “Mechanical and Hydraulic Actuation Strategies for Mainstage Spool Valves in Hydraulic Motors”, FPMC2019-1687, ASME/Bath Symposium on Fluid Power and Motion Control, 2019.

N. Fulbright*, G. Boyce-Erickson, T. Chase, P. Y. Li and J. Van de Ven, “Automated Design and Analysis of a Variable Displacement Linkage Motor”, FPMC2019-1677, ASME/Bath Symposium on Fluid Power and Motion Control, 2019.

C. Mangipudi and P. Y. Li, "Vision based passive arm localization approach for underwater ROVs using a least squares on SO(3) gradient algorithm", 2019 American Control Conference, Philadelphia, PA. June 2019.

S. Y. Lee and P. Y. Li, "Supervisory Control for a Switched Mode Hydraulic Transformer", ASME/Bath Symposium on Fluid Power and Motion Control, Bath. UK, September 2018.

H. Tian, P. Y. Li* and J. D. Van de Ven, "Using an Angle-Domain Repetitive Control to Achieve Variable Valve Timing for a Digital Displacement Hydraulic Motor", 9th Workshop on Digital Fluid Power (DFP17), September, 2017, Aalborg, Denmark.

P. Y. Li, "Angle-Domain Internal Model Control Via a Time-Varying Kalman Filter", 2017 American Control Conference, Seattle, WA, May 2017.

S.Y. Lee and P. Y. Li, "A Hardware-In-The-Loop (HIL) Testbed for Hydraulic Transformer Research", 15th Scandinavian International Conference on Fluid Power (SICFP), Linkoping, Sweden, June 2017.

Zhang, C., Li, P., Van de Ven, J., and Simon, T., 2017, Oscillatory flow regenerative heat exchangers for application to energy storage systems, TFEC-IWHT2017-17911, 4th Int’l. Workshop on Heat Transfer, Las Vegas, NV.

A. Srivatsa and P. Y. Li, "Effect of Moisture On the Efficiency and Power Density of a Liquid Piston Air Compressor/Expander", ASME DSC Conference [DSCC2016-9884], Minneapolis, MN October, 2016.

M. Saadat, A. Srivatsa, P. Y. Li and T. W. Simon, "Air Compression Performance Improvement Via Trajectory Optimization: Experimental Validation", ASME DSC Conference [DSCC2016-9825], Minneapolis, MN, October, 2016.

S. Lee, P. Y. Li and F. Eskilsson, "Multi degree-of-freedom hydraulic human power amplifier with rendering of assistive dynamics", ASME DSC Conference [DSCC2016-9781], Minneapolis, October, 2016.

M. B. Rannow, P. Y. Li and T. R. Chase, "Discrete Piston Pump/Motor Using a Mechanical Rotary Valve Control Mechanism", Proceedings of the 8th Workshop on Digital Fluid Power (DFP16),  Tampere, Finland, May 24-25, 2016.

Shi, H., & Li, P. Y. (2016). Coordination control of a 3 DOF distributed human assistive load lifting system with force amplification. In Proceedings of the 2016 12th World Congress on Intelligent Control and Automation, WCICA 2016 (Vol. 2016-September, pp. 1359-1365). [7578803] Institute of Electrical and Electronics Engineers Inc.. DOI: 10.1109/WCICA.2016.7578803

M. Saadat and P. Y. Li, "Combined Optimal Design and Control of a Near-isothermal Liquid Piston Air Compressor/Expander for a Compressed Air Energy Storage (CAES) System for Wind Turbines", 2015 ASME-DSCC, Columbus, OH., October, 2015. [Finalist for the Best Energy Systems paper Award].

 P. Y. Li, "Angle Domain Repetitive Control: Design and Robustness", 2015 ASME-DSCC, Columbus, OH., October, 2015.

S. Lee and P. Y. Li, "Passive Control of a Hydraulic Human Power Amplifier Using a Hydraulic Transformer", 2015 ASME-DSCC, Columbus, OH., October, 2015.

S. Lee and P. Y. Li, "Passivity Based Backstepping Control for Trajectory Tracking Using a Hydraulic Transformer", ASME/Bath 2015 Symposium on Fluid Power and Motion Control (FPMC), October 12, 2015. doi: 10.1115/FPMC2015-9618

L. Huang, T. W. Simon, P. Y. Li and E. J. Hummelt, "Analysis of dissolved gas in the application of liquid piston gas compression", Proceedings of the 1st Thermal and Fluid Engineering Summer Conference, New York City, NY, August, 2015.

P. Y. Li and M. Saadat, "An approach to reduce the flow requirement for a liquid piston air compressor/expander in a compressed air energy storage (CAES) system",  2nd Offshore Energy and Storage Symposium (OSES), Edinburgh, U.K., July 2015.

Y. Xiao, C. Guan, P. Y. Li and F. Wang, "Optimal design of a compound hybrid system consists of torque coupling and energy regeneration for hydraulic hybrid excavator", 2015 IEEE/ASME Internation Conference on Advanced Intelligent Mechatronics (AIM), Busan, Korea, July, 2015.

C. Zhang, P. Y. Li, J. D. Van de Ven, and T. W. Simon, "Design analysis of a liquid-piston compression chamber with application to compressed air energy storage", ASME-AIT-UIT 2015 Conference on Thermal Energy Systems: Production, Storage, Utilization and the Environment, Napoli, Italy, May 2015.

F. Shirazi, P. Gagnon, P. Y. Li and J.D Van de Ven, “Design, modeling and control of a lab- scale compressed air energy storage (CAES) testbed for wind turbines with simulated input and demand power variability”, ASME Dynamic Systems and Control Conference, San Antonio, TX, Nov. 2014.

Z. Du, K. L. Cheong, P. Y. Li and T. R. Chase, “Design and Experimental Validation of a Virtual Vehicle Control Concept for Testing Hybrid Vehicles Using a Hydrostatic Dynamometer”, ASME Dynamic Systems and Control Conference, San Antonio, TX, Nov. 2014. 

C. Zhang, J. Wieberdink, T. W. Simon, P. Y. Li, J. D. Van de Ven and E. Loth, "Numerical analysis of heat exchangers used in a liquid piston compressor using a one-dimensional model with an embedded two-dimensional submodel", ASME-IMECE #2014-38567, Montreal, Quebec, Canada, Nov. 2014.

C. Zhang, T. W. Simon, P. Y. Li and J. Van de Ven, ``Numerical Modeling of Three Dimensional Heat Transfer and Fluid Flow Through Interrupted Plates using Unit Cell Scale", 15th International Heat Transfer Conference (IHTC-15), August, 2014. Kyoto, Japan.

S. Lee and P. Y. Li, "Trajectory Tracking Control Using a Hydraulic Transformer", 2014 International Symposium on Flexible Automation, Awaji Island, Japan, July 2014.

K. L. Cheong, Z. Du, P. Y. Li and T. R. Chase, "Hierarchical Control Strategy for a Hybrid Hydro-mechanical Transmission (HMT) Power-Train", 2014 American Control Conference, Portland OR, June 2014.

M. Saadat, F. Shirazi and P. Y. Li, "Revenue Maximization of Electricity Generation for a Wind Turbine Integrated with a Compressed Air Energy Storage System", 2014 American Control Conference, Portland OR, June 2014

Mohsen Saadat, Farzad Shirazi and Perry Y. Li,  "NONLINEAR CONTROLLER DESIGN WITH BANDWIDTH CONSIDERATION FOR A NOVEL COMPRESSED AIR ENERGY STORAGE SYSTEM". 2013 ASME Dynamic Systems and Control Conference. Palo Alto, CA, Oct 2013.

C. Zhang, J. Wieberdink, F. Shirazi, B. Yan, T. W. Simon and P. Y. Li. "Numerical Investigation of Metal-foam filled liquid piston compressor using a two-energy equation formulation based on experimentally validated model", ASME-IMECE-2013 #63854, San Diego, CA, Nov. 2013.

C. Zhang, T. W. Simon and P. Y. Li, "Optimization of the axial porosity distribution of porous inserts in a liquid piston gas compressor using a one-dimensional formulation", ASME-IMECE-2013 #63862, San Diego, CA, Nov. 2013.

C. Zhang, B. Yan, J. Wierberdink, P. Y. Li, J. D. Van de Ven, E. Loth and T. W. Simon, “Thermal analysis of a compressor for application to compressed air energy storage”, Proceedings of the IWHT2013 2nd International Workshop on Heat Transfer Advances for Energy Conservation and Pollution Control, October, 2013, Xi'an China.

Chao Zhang, Farzad Shirazi, Bo Yan, Terry W. Simon, Perry Y. Li and James D. Van de Ven (2013). "DESIGN OF AN INTERRUPTED PLATE HEAT EXCHANGER USED IN A LIQUID PISTON COMPRESSION CHAMBER FOR COMPRESSED AIR ENERGY STORAGE". ASME 2013 Summer Heat Transfer Conference. Minneapolis, MN.

M. Saadat, F. Shirazi and P. Y. Li, "Optimal Trajectories of Water Spray for a Liquid Piston Air Compressor", ASME 2013 Summer Heat Transfer Conference HT2013-17611, Minneapolis, MN, July 2013.

F. Shirazi, M. Saadat, B. Yan, P. Y. Li and T. W. Simon, "Optimal Control Experimentation of Compression Trajectories for a Liquid Piston Air Compressor",ASME 2013 Summer Heat Transfer Conference HT2013-17613, Minneapolis, MN, July 2013.

F. Shirazi, M. Saadat, B. Yan, P.Y. Li and T. W. Simon, "Iterative Optimal and Adaptive Control of a Near Isothermal Liquid Piston Air Compressor in a Compressed Air Energy Storage System", 2013 American Control Conference, Washington D.C., June 2013.

Z. Du, K. L. Cheong, P. Y. Li and T. R. Chase, "Fuel Economy Comparisons of Series, Parallel and HMT Hydraulic Hybrid Architectures", 2013 American Control Conference, Washington D.C., June 2013.

V. Durbha and P. Li, " Storage Function for Passivity Analysis of Pneumatic Actuators With Finite Heat Transfer in Human-Interactive Systems", ASME DSC Conference, [DSCC2012-MOVIC2012-8753], Ft. Lauderdale, Nov. 2012.

D. Berg and P. Y. Li, "Achieving Dexterous Manipulation for Minimally Invasive Surgical Robots Through the Use of Hydraulics", ASME DSC Conference, [DSCC2012-MOVIC2012-8685], Ft. Lauderdale, Nov. 2012.

M. Wang and P. Y. Li, "Displacement Control of Hydraulic Actuators Using a Passivity Based Nonlinear Controller", ASME DSC Conference, [DSCC2012-MOVIC2012-8784], Ft. Lauderdale, Nov. 2012.

C. Zhang, M. Saadat, P. Y. Li and T.W. Simon, "Heat Transfer in a Long, Thin Tube Section of an Air Compressor: An Empirical Correlation from CFD and a Thermodynamic Modeling", ASME IMECE, Paper #86673, Houston TX, November 2012.

 C. Zhang, T. W. Simon and P. Y. Li, "Storage Power and Efficiency Analysis Based on CFD for Air Compressors used for Compressed Air Energy Storage", ASME IMECE, Paper #88985 Houston TX, November 2012.

M. Saadat and P. Y. Li, "Modeling and Control of a Novel Compressed Air Energy Storage System for Offshore Wind Turbine", 2012 American Control Conference, Montreal, Canada, June 2012.

M. Saadat, P. Y. Li and T. W. Simon, "Optimal Trajectories for a Liquid Piston Compressor/Expander in a Compressed Air Energy Storage System with Consideration of Heat Transfer and Friction", 2012 American Control Conference, Montreal, Canada, June 2012.

V. Durbha and P. Y. Li, "A nonlinear spring model of hydraulic actuator for passive controller design in bilateral teleoperation", 2012 American Control Conference, Montreal, Quebec, Canada, June 2012.

M. Wang and P. Y. Li, "Passivity based adaptive control of a two-chamber hydraulic actuator", 2012 American Control Conference, Montreal, Quebec, Canada, June 2012.

P. Y. Li and M. Wang, "Passivity based nonlinear control of hydraulic actuators based on an Euler-Lagrange Formulation", ASME DSCC 2011/Bath Symposium on PTMC, Arlington, VA, October 2011.

H. Tu, M. B. Rannow, M. Wang, P. Y. Li and T. R. Chase, "High-speed 4 way rotary on/off valve for virtually variable displacement pump/motor applications", ASME DSCC 2011/Bath Symposium on PTMC, Arlington, VA, October 2011.

A. T. Rice and P. Y. Li, "Optimal Efficiency-Power Tradeoff for an Air Motor/Compressor with Volume Varying Heat Transfer Capability", ASME DSCC 2011/Bath Symposium on PTMC, Arlington, VA, October 2011.

T. P. Sim and P. Y. Li, "Wavelet Analysis and Modeling of Time-varying TRCs", Proceedings of the 27th Non-Impact Printing (NIP) Conference, Minneapolis, MN, September 2011.

K. L. Cheong, P. Y. Li and T. R. Chase, "Optimal Design of Power-Split Transmission for Hydraulic Hybrid Passenger Vehicles", 2011 American Control Conference, pp.3295-3300, San Franscisco, CA, June, 2011.

H. Tu, M. B. Rannow, M. Wang, P. Y. Li and T. R. Chase, "The Advantages and Feasibility of Externally Actuating a High-speed Rotary On/Off Valve", 2011 International Fluid Power Exhibition (IFPE), Paper number: 20.3, Las Vegas, NV, March, 2011.

M. Wang, P. Y. Li, H. Tu, M. Rannow and T. R. Chase, "Direct Displacement Control of Hydraulic Actuators Based on a Self-Spinning Rotary On/Off Valve", 2011 International Fluid Power Exhibition (IFPE), Paper number: 20.2, Las Vegas, NV, March, 2011.

K. L. Cheong, P. Y. Li, S. Sedler and T. R. Chase, "Comparison between input coupled and output coupled power-split configurations in hybrid vehicles", 2011 International Fluid Power Exhibition (IFPE), Paper number:10.2, Las Vegas, NV, March, 2011.

F. Mensing and P. Y. Li, "Sizing and Optimal Operation of a Power Split Hydraulic Hybrid Drive Train", 2011 International Fluid Power Exhibition (IFPE), Las Vegas, NV, March, 2011.

P. Y. Li, E. Loth, T. W. Simon, J. D. Van de Ven, and Stephen E. Crane, "Compressed Air Energy Storage for Offshore Wind Turbines", 2011 International Fluid Power Exhibition (IFPE), Las Vegas, NV, March, 2011.

K. L. Cheong, P. Y. Li and J. Xia, “Control Oriented Modeling and System Identification of a Diesel Generator Set (Genset)”,  2010 American Control Conference, Baltimore MD, June 2010.

V. Durbha and P. Y. Li, “Independent Metering of Pneumatic Actuator for Passive Human Power Amplification”, Proceedings of the 2010 American Control Conference, Baltimore MD, June 2010.

Wang M. Tu H. Rannow M. Li P Y. Chase T R. "CFD Analysis of a Novel High Speed Rotary ON/Off Valve", Proc. of 6th FPNI-PhD Symp.  pp. 283-294, West Lafayette, IN, June, 2010

Durbha V. and Li P. Y., "Passive Tele-operation of Pneumatic Powered Robotic Rescue Crawler", Proc. of 6th FPNI-PhD Symp.  pp. 451-466, West Lafayette, IN, June, 2010

P. Y. Li* and F. Mensing, “Optimization and Control of a Hydro-Mechanical Transmission based Hydraulic Hybrid Passenger Vehicle”, Proceedings of the 7th International Fluid Power Conference, Aachen, Germany, March 2010.

M. Rannow, H. Tu, M. Wang, P. Y. Li* and T. Chase, “Optimal Design of a High-Speed On/off Valve for a Hydraulic Hybrid Vehicle Application”, Proceedings of the 7th International Fluid Power Conference, Aachen, Germany, March 2010.

H. Tu, M. Rannow, M. Wang, P. Y. Li, and T. R. Chase, "Modeling and Validation of a High Speed Rotary PWM On/Off Valve", Proceedings of the ASME 2009 Dynamic Systems and Control Conference #2763, DSCC2009/Bath Symposium PTMC, Hollywood, 2009.

M. Rannow and P. Y. Li, "Soft Switching Approach to Reducing Transition Losses in an On/Off Hydraulic Valve", Proceedings of the ASME 2009 Dynamic Systems and Control Conference #2617, DSCC2009/Bath Symposium PTMC, Hollywood, 2009.

C. Sancken and P. Y. Li, "Optimal Efficiency-Power Relationship for an Air Motor-Compressor in an Energy Storage and Regeneration System", Proceedings of the ASME 2009 Dynamic Systems and Control Conference #2749, DSCC2009/Bath Symposium PTMC, Hollywood, 2009.

T. P. Sim and P. Y. Li, "Analysis and Control Design of a Hydro-Mechanical Hydraulic Hybrid Passenger Vehicle", Proceedings of the ASME 2009 Dynamic Systems and Control Conference #2763, DSCC2009/Bath Symposium PTMC, Hollywood, 2009.

V. Durbha and P. Y. Li, "Passive Bilateral Tele-Operation and Human Power Amplification With Pneumatic Actuators", Proceedings of the ASME 2009 Dynamic Systems and Control Conference #2751, DSCC2009/Bath Symposium PTMC, Hollywood, 2009.

Z. Liu and P. Y. Li, "Adaptive Calibration and Control of Cascade Processes With Unknown Measurement Model and Actuator Dynamics and Its Application to Paper Manufacturing", Proceedings of the ASME 2009 Dynamic Systems and Control Conference #2625, DSCC2009/Bath Symposium PTMC, Hollywood, 2009.

T. P. Sim and P. Y. Li, "Determination of Significant Color Map", Proceedings of the 25th Confererence on Non-impact Printing (NIP 25), Louisville, KY, 2009.

T. P. Sim and P. Y. Li, "Direct Color Consistency Control for Xerographic Printing", Proceedings of the 25th Confererence on Non-impact Printing (NIP 25), Louisville, KY, 2009.

R. Wang and P. Y. Li, "Duty Ratio Control of a Rotary PWM valve with Periodic Measurement Error", Proceedings of the 2009 American Control Conference, St. Louis, MO, 2009. (Best presentation in session)

P. Y. Li and V. Durbha, "Passive control of fluid powered human power amplifiers", Proceedings of the 7th JFPS International Symposium on Fluid Power, Toyama, Japan, September, 2008..

T.P. Sim and P. Y. Li, "On Coordination and Stabilization of Two Xerographic Printers", Proceedings of the 2008 American Control Conference, pp 1546-1551, June, 2008. (Best presentation in session)

M. Wang, and P. Y. Li, "Event Based Kalman Filter Observer For Rotary High Speed On/Off Valve", Proceedings of the 2008 American Control Conference, pp 1546-1551, June, 2008.

J. Van de Ven, M. W. Olson and P. Y. Li, "Development of a Hydro-Mechanical Hydraulic Hybrid Drive Train with Independent Wheel Torque Control for an Urban Passenger Vehicle", IFPE 2008, Las Vegas, March, 2008.

P. Y. Li, J. D. Van de Ven and C. Sancken, "Open Accumulator Concept for Compact Fluid Power Energy Storage", ASME-IMECE 2007-42580, Seattle, WA, November, 2007.

M. B. Rannow and P. Y. Li, "On/Off Valve Based Position Control of a Hydraulic Cylinder", ASME-IMECE 2007-42590, Seattle, WA, November, 2007.

H. Tu*, M. B. Rannow, J. D. Van de Ven, M. Wang, P. Y. Li and T. R. Chase, "High-Speed Rotary Pulse Width Modulated On/Off Valve", ASME-IMECE 2007-42559, Seattle, WA, November, 2007.

M. Rannow*, H. Tu, P.Y. Li and T.R. Chase, “Software Enabled Variable Displacement Pumps – Experimental Studies,” ASME IMECE2006-14973, Chicago, IL, November 2006.

P.Y. Li, “A New Passive Control for Hydraulic Human Power Amplifier,” ASME IMECE2006-15056, Chicago, IL, November 2006.

C. Groepper, T. Cui, P.Y. Li* and K.A. Stelson, “Fabrication of Integrated Pressure-Flow-Temperature Sensor for Hydraulic Systems,” ASME IMECE2006-13211, Chicago, IL, November 2006.

C. Groepper, T. Cui, P.Y. Li and K.A. Stelson*, “Design of Integrated Pressure Flow and Temperature Sensor for Hydraulic Systems,” In Proceedings of the Bath Workshop for Power Transmission and Motion Control (PTMC). N. Johnston and K.A. Edge, Eds., Professional Engineering Publishing Ltd., London. pp. 321-334, September 2006.

T.P. Sim* and P.Y. Li, “Optimal Time Sequential Sampling of Tone/Color Reproduction Functions,” 2006 American Control Conference, Minneapolis, MN, June 2006.

Q.H. Yuan* and P.Y. Li, “Extension of Robust Design of Unstable Valve: Diagonally Structured Uncertainty,” 2006 American Control Conference, Minneapolis, MN, June 2006.

Q.H. Yuan and P.Y. Li, “On Self-Sensing Actuators: Comparison of Boxcar Window and Kalman Filter Approahes,” ASME-IMECE, #IMECE2005-80284, Fluid Power Systems and Technology Division, Orlando, FL, November 2005.

Sim, T.P. and Li, P.Y. "Optimal Time Sequential Sampling of Tone Reproduction Function," Proceedings of the 2006 American Control Conference, Minneapolis, June 2006.

Yuan, Q. and Li, P. Y. "Extension of robust design of unstable valve: diagonally structured uncertainty," Proceedings of the 2006 American Control Conference, Minneapolis, June 2006.

Durfee, W.K, Li, P.Y. and Waletzko, "D. At-home Systems and Controls Laboratory," Proceedings of the ASME-IMECE, #IMECE2005-82566, Dynamic Systems and Control Division, Orlando, FL, Nov. 2005. 

Li, P.Y., Li, C. Y, Chase, T. R., "Software Enabled Variable Displacement Pumps," Proceedings of the ASME-IMECE, #IMECE2005-81376, Fluid Power Systems and Technology Division, Orlando, FL, Nov. 2005

Groepper, C., Cui, T.-H., Li, P.Y., and Stelson, K.A, Integrated Pressure-Flow-Temperature Sensor for Hydraulic Systems Proceedings of the ASME-IMECE, #IMECE2005-82002, Fluid Power Systems and Technology Division, Orlando, FL, Nov. 2005

Durfee, D.K, Li, P.Y, and Waletzko, D., "At-home system and controls laboratories", Proceedings of the 2005 American Society of Engineering Educators Conference., 2005.

Yuan Q. and Li P. Y., Energy-saving control of an unstable valve with an MR brake, Proceedings of the 2005 American Control Conference, Portland OR, June 2005

Li, P. Y., and Q.-H. Yuan, "Flux Observer for Spool Displacement Sensing in Self-Sensing Push-Pull Solenoids," Proceedings of 6th International Conference on Fluid Power Transmission and Control (ICFP), pp. 772-776. Hangzhou, China. March 2005

Dongjun Lee; Li, P.Y., "Passive decomposition of multiple mechanical systems under coordination requirements," 43rd IEEE Conference on Decision and Control, 2004. CDC. Volume 2,  14-17 Dec. 2004 Page(s):1240 - 1245 Vol.2

Q.- H. Yuan and P. Y. Li, "Self-sensing actuators in electrohydraulic valve," Proceeding of the 2005 ASME-IMECE, Anaheim, CA.  Paper # 62104, November 2004.

Q.- H. Yuan and P. Y. Li, "Self-calibration of push-pull solenoid actuators in electrohydraulic valves," Proceeding of the 2005 ASME-IMECE, Anaheim, CA.  Paper # 62109, November 2004.

P. Y. Li, "Design and control of a hydraulic human power amplifier", (Revised 7/06/05) Proceeding of the 2005 ASME-IMECE, Anaheim, CA.  Paper # 60868, November 2004

K. Krishnaswamy and P. Y. Li, Bondgraph based approach to passive teleoperation of a hydraulic backhoe, Proceeding of the 2005 ASME-IMECE, Anaheim, CA.  Paper # 61244, November 2004.

T. P. Sim and P. Y. Li, Color Reproduction stabilization with Time-sequential Sampling, Proceedings of 20th Conference on Non-impact Printing (NIP 20), Salt Lake City, UT, October 2004.

T. P. Sim and P. Y. Li, Representation of primary color tone reproduction curves and their stabilization,  Proceedings of 20th Conference on Non-impact Printing (NIP 20), Salt Lake City, UT, October 2004.

P. Y. Li, T.-P. Sim and D.J. Lee, Time sequential Sampling and Reconstruction of Tone and Color Reproduction Functions for Xerographic Printing, Proceedings of the 2004 American Control Conference, Boston, June 2004.

W. K. Durfee, P. Y. Li, and D. Walezko, Take-home lab kits for system dynamics and controls courses, Proceedings of the 2004 American Control Conference (Interactive session), Boston, June 2004.

Z. Liu and P. Y. Li, Adaptive calibration of surrogate measurements and its application to the control of moisture content in paper manufacturing, Proceedings of the 2004 American Control Conference, Boston, June 2004.

Q.-H. Yuan and P. Y. Li, Optimal and Robust Design of Unstable Valves, 2004 American Control Conference, Boston, June 2004.

K. Krishnaswamy and P. Y. Li, Passive teleoperation of a multi DOF hydraulic backhoe using dynamic passive valve, Proceedings of the ASME-IMECE, Fluid Power Systems and Technology Division, paper IMECE2003-43719, Arlington VA., November 2003.

Q. H. Yuan and P. Y. Li, Modeling and Experimental Study on the Fluid Flow Forces for the Design of Unstable Valves, Proceedings of the ASME-IMECE, Fluid Power Systems and Technology Division, Arlington VA., November, 2003.

D. J. Lee and P. Y. Li, Formation and Maneuver Control of Multiple Spacecraft 2003 American Control Conference, Denver, June 2003.

S. Swaminathan and P. Y. Li, "Traffic Flow Stability Induced by Arbitrary Adaptive Cruise Control Policies," 2003 American Control Conference, Denver, June 2003.

D. J. Lee and P. Y. Li, Towards Robust Passivity: A Passive Control Implementation Structure for Mechanical Teleoperators2003 11th Haptics and Teleoperator Symposium, IEEE VR 2003, Los Angeles , March 2003

K. Krishnaswamy* and P.Y. Li, “Single Degree of Freedom Passive Hydraulic Teleoperation Using a Passified Two-Stage Servo-Valve," 2nd IFAC Conference on Mechatronic Systems, Berkeley, CA, December 2002.

Q. H. Yuan and P. Y. Li, "Using Viscosity to Improve Spool Agility," 2002 Bath Workshop on Power Transmission and Motion Control (PTMC), Bath, U.K., Sept.11-13, 2002.

P. Y. Li and R. F. Ngwompo, Passification of an electrohydraulic valve using bond graphs. 2002 IFAC World Congress, Barcelona, Spain. July 2002.

P. Bjegovic and P. Y. Li, Adaptive pre-emptive control of vacuum dewatering in paper manufacturing 2002 IFAC World Congress, Barcelona, Spain . July 2002.

K. Krishnaswamy and P. Y. Li, "Passification of a Two-Stage Pressure Control Valve," 2001 American Control Conference, Anchorage, Alaska May 2002.

Q. H. Yuan and P. Y. Li, An Experimental Study on the Use of Unstable Electrohydraulic Valves for Control. 2001 American Control Conference, Anchorage, Alaska May 2002.

D. J. Lee and P. Y. Li, Passive Coordination Control for Nonlinear Bilateral Teleoperated Manipulator, IEEE International Conference for Robotics and Automation. Washington D.C. April 2002.

D. J. Lee and P. Y. Li, Passive Tool Dynamics Rendering for Nonlinear Bilateral Teleoperated Manipulator, IEEE International Conference for Robotics and Automation. Washington D.C. April 2002.

P. Y. Li and K. Krishnaswamy, Towards Human-Friendly Hydraulics - Passive Teleoperation of Hydraulic Equipment using a Force Feedback Joystick  Joint 2002 IFPE / SAE Congress. Las Vegas, NV, March 2002. Also in SAE Transactions - Journal of Commercial Vehicles, pp495-505, 2003.

P. Y. Li, P. Bjegovic and S. Ramaswamy, Preemptive control of multiply actuated processes: application to moisture content control in paper manufacturing using surrogate measurements Proceedings 2001 ASME IMECE - Vol. DSC. New York, Nov. 2001.

P. Y. Li, Dynamic Redesign of a Flow Control Valve using a Pressure Control Pilot Proceedings 2001 ASME IMECE - Vol. DSC. New York, Nov. 2001.

D. J. Lee and P. Y. Li, Passive Control of Bilateral Teleoperated Manipulators: Robust control and experiments. Proceedings of the 2001 American Control Conference, Arlington VA, June 2001.

P. Y. Li and K. Krishnaswamy, Passive Control of an Electrohydraulic Actuator Using an Electrohydraulic Passive ValveProceedings of the 2001 American Control Conference, Arlington VA, June 2001.

S. Saimek and P. Y. Li, Motion planning and control of a Swimming MachineProceedings of the 2001 American Control Conference, Arlington VA, June 2001

P. Y. Li and D. J. Lee, Passive Feedforward Approach to the Control of Bilateral Teleoperated ManipulatorsProceedings of the Symposium on Haptic Interfaces and Teleoperators, at the ASME IMECE, Orlando FL. Nov. 2000.

R. T. Anderson and P. Y. Li, Mathematical Modeling of an Unconventional Flow Control Servo-valveSymposium on Electrohydraulics Systems Modeling and Control at the ASME IMECEC Orlando, FL Nov. 2000.

C. Zhong and P. Y. Li, "Bayesian Network Modeling of a Xerographic Printing System," Symposium on Imaging and Motion at the ASME IMECE, Orlando, FL Nov. 2000.

P. Y. Li, Robust Control and Diagnostic Strategies for Xerographic PrintingProceedings of the Imaging Science and Technology (IS&T)'s NIP-16: International Conference on Digital Printing Technologies. pp.261-266, Vancouver , Canada Oct. 2000. (Presentation)

J. Li and P. Y. Li, Passive Velocity Field Control (PVFC) approach to robot force control and contour folllowing2000 Japan-USA Symposium on Flexible Automation - Ann Arbor , MI, July 2000.

C. Chen, P. Y. Li and A. G. Erdman, "Design and Analysis of a 4 DOF hybrid spherical scanning apparatus," ASME 2000 Design Engineering Technical Conference - Baltimore, MD Sept. 2000

P. Y. Li, Passivity properties and passification of electrohydraulic servo valves.  American Control Conference, Chicago June, 2000

A. Shrivastava and P. Y. Li, Traffic Flow Stability Induced by Constant Time Headway Policy for Adaptive Cruise Control (ACC) VehiclesAmerican Control Conference, Chicago , June 2000

K. Krishnaswamy and P. Y. Li, On Using unstable electrohydraulic valves for control. American Control Conference, Chicago , June 2000

P. Y. Li and S. Saimek, "Modeling and Estimation of Hydrodynamic Potentials," Proceedings of the 38th IEEE CDC, 1999

P. Y. Li, Coordinated Contour Following Control for Machining Processes - A SurveyProceedings of the 1999 American Control Conference, San Diego, June 1999.

P. Y. Li, Adaptive Passive Velocity Field Control [pdf]Proceedings of the 1999 American Control Conference, San Diego, June 1999.

P. Y. Li and S. Dianat, Robust Stabilization of Tone Reproduction Curves for Xerographic Processes [ps]1998 IEEE Conference on Control Applications, Sept., Trieste, 1998

 P. Y. Li, Passive Control of Bilateral Teleoperated Manipulators [ps]  Proceedings of the 1998 American Control Conference, June, Philadephia, PA.

 M. Krucinski, C. Cloet, R. Horowitz, M. Tomizuka and P. Y. Li, Interobject Spacing Control and Controllability in a Manufacturing Transportation Systems In Proceedings of the 1998 American Control Conference, June, Philadephia, PA.

 P. Y. Li and R. Horowitz, "Self-Optimizing Control,"   36th IEEE CDC, San Diego, pp.1228-1233, Dec 1997

 P. Y. Li and R. Horowitz, Self-Optimizing Control: Application to Smart Exercise Machines [pdf.gz]  Symposium on Computational Intelligence in Robotics and Automation, (CIRA'97) Monterey, CA July 1997.

 P. Y. Li and R. Horowitz, Application of Passive Velocity Field Control Approach to Robot Contour Following Problems [pdf.gz]  35th IEEE CDC, Kobe, Japan 1996.

 P. Y. Li, L. Alvarez, and R. Horowitz, A Safe Velocity Tracking Controller for AHS Platoon Leaders 35th IEEE CDC, Kobe, Japan 1996.

 L. Alvarez, R. Horowitz, and P. Y. Li, A Vehicle Flow Controller for AHS 35th IEEE CDC, Kobe, Japan 1996.

 P. Y. Li and R. Horowitz,  Passive Velocity Field Control Approach to Robot Contour Following [ps.gz] In Proceedings of the 1996 Japan USA Symposium on Flexible Automation, July 1996.

 P. Y. Li and R. Horowitz,  Control of Smart Exercise Machines, Part I: Problem formulation and nonadaptive control [ps]  In Proceedings of the IFAC 96, San Francisco, CA June 96

 P. Y. Li and R. Horowitz, Control of Smart Exercise Machines, Part II: Self Optimizing Control [ps]  In Proceedings of the IFAC 96, San Francisco, CA June 96

 A Link-Layer Vehicle Flow Control for the PATH AHS Architecture  In Proceedings of the IFAC 96, San Francisco, CA June 96

 P. Y. Li, R. Horowitz, L. Alvarez, J. Frankel, and A. M. Robertson, Traffic Flow Stabilization In Proceedings of 1995 ACC, Seattle, WA June 95

 J. Frankel, L. Alvarez, R. Horowitz, and P. Y. Li, Safety Orient Maneuvers for AVHS [ps.gz] In Proceedings of 1995 ACC, Seattle, WA June 95

P. Y. Li and R. Horowitz, Passive Velocity Field Control of Mechanical Manipulators [ps] In Proceedings of the IEEE ICRA 95, Nagoya, Japan May 95

 P. Y. Li and R. Horowitz, On the Optimizing-Adaptive Control ProblemIn Proceedings of the 1994 ACC, Baltimore, MD June 94

 P. Y. Li and R. Horowitz, Self Tuning Control of an Exercise Machine In Symposium on Mechatronics, ASME WAM, New Orleans, LA Nov 93

 P. Y. Li, J. F. Shields, and R. Horowitz, Adaptive Control of an Exercise Machine 15th IEEE EMBS, San Diego, CA Oct 93

R. Horowitz and P. Y. Li, Multitask Robot Learning 1992 ACC, Chicago, IL June 92

P. Y. Li and Z. Ladin, Validation of a Mathematical Model of the Effect of Sole Elasticity Distribution on Pronation15th Annual Meeting of the American Society of Biomechanics, Tempe, AZ 1990

 P. Y. Li and Z. Ladin, "Impact Impulse Analysis for a Two Link Kinematic Chain Running Model," 12th IEEE EMBS, Philadelphia, PA, 1990

P. Y. Li and Z. Ladin, An Energy Minimization Approach to the Design of Elastic Soles for Running Shoes 13th Annual Meeting of the American Society of Biomechanics, Burlington, VT 1989