Publications

Book Chapters

2. Khajenejad, M., Pati T. and Yong, S.Z. “Optimal Interval Observers for Bounded Jacobian Nonlinear Dynamical Systems." In Set-Valued Approaches to Control and Estimation of Uncertain Systems: Theory and Applications, Springer, to appear, 2024. [pdf] [pdf]  

1. Khajenejad, M. and Yong, S.Z. “Resilient State Estimation and Attack Mitigation in Cyber-Physical Systems.” Security and Resilience in Cyber-Physical Systems: Detection, Estimation and Control, Springer, pages 149–185, 2022. [pdf]

Published/Accepted Journal Publications

10. Khajenejad, M. and Yong, S.Z. “Tight Remainder-Form Decomposition Functions with Applications to Constrained Reachability and Guaranteed State Estimation.” IEEE Transactions on Automatic Control, pages 7057-7072, vol. 68, no. 12, 2023 (Impact Factor = 6.549). [pdf] 

9. Khajenejad, M. and Martinez, S. “Guaranteed Privacy of Distributed Nonconvex Optimization via Mixed-Monotone Functional Perturbations." IEEE Control Systems Letters (L-CSS), pages 1081-1086, vol. 7, 2023 (Impact Factor = 2.766, presented at ACC'23). [pdf] 

8. Jin, Z., Khajenejad, M. and Yong, S.Z. “Robust Data-Driven Control Barrier Functions for Unknown Continuous Control Affine Systems." IEEE Control Systems Letters (L-CSS), pages 1309-1314, vol. 7, 2023 (Impact Factor = 2.766, presented at ACC'23). [pdf] 

7. Khajenejad, M. and Yong, S.Z. “Simultaneous State and Unknown Input Set-Valued Observers for Quadratically Constrained Nonlinear Dynamical Systems.” International Journal of Robust and Nonlinear Control, pages 6589–6622, vol. 32, issue 12, 2022 (Impact Factor = 3.897). [pdf] 

6. Khajenejad, M. and Yong, S.Z. “H∞-Optimal Interval Observer Synthesis for Uncertain Nonlinear Dynamical Systems via Mixed-Monotone Decompositions.” IEEE Control Systems Letters (L-CSS), pages 3008–3013, vol. 6, 2022 (presented at CDC’22). [pdf] 

5. Khajenejad, M. and Yong, S.Z. “Guaranteed State Estimation via Direct Polytopic Set Computation for Nonlinear Discrete-Time Systems.” IEEE Control Systems Letters (L-CSS), pages 2060–2065, vol. 6, 2022 (presented in ACC’22). [pdf] 

4. Jin Z., Khajenejad, M. and Yong, S.Z. “Data-Driven Abstraction and Model Invalidation for Unknown Systems with Bounded Jacobian.” IEEE Control Systems Letters (L-CSS), pages 3421–3426, vol. 6, 2022 (presented at CDC’22). [pdf] 

3. Pati T., Khajenejad, M., Daddala S.P. and Yong, S.Z. “L1-Robust Interval Observer Design for Uncertain Nonlinear Dynamical Systems.” IEEE Control Systems Letters (L-CSS), pages 3475–3480, vol. 6, 2022 (presented at CDC’22). [pdf] 

2. Khajenejad, M., Jin, Z. and Yong, S.Z. “State and Unknown Terrain Estimation for Planetary Rovers via Interval Observers.” Advanced Intelligent Systems, 2100040, 2021 (Invited Paper, Impact Factor = 7.4). [pdf] 

1. Hassaan, S.M., Khajenejad, M., Jensen, S., Shen, Q., and Yong, S.Z. “Incremental Affine Abstraction of Nonlinear Systems.” IEEE Control Systems Letters (L-CSS), vol. 5, vo. 2, pages 653-658, 2021 (Impact Factor = 2.766). [pdf] 

Under Review Journal Publications

3. Khajenejad, M., Brown, S., and Martinez, S. “Distributed Resilient Interval Observer Synthesis for Nonlinear Discrete-Time Systems.“ IEEE Transaction on Automatic Control, 2024, under review.

2. Khajenejad, M. and Yong, S.Z. “Simultaneous Mode, State and Input Set-Valued Observers for Switched Nonlinear Systems.” Automatica, 2023, under review.

1. Mandal, N., Khajenejad, M. and Martinez, S. “Distributed Task Allocation for Self-Interested Agents with Partially Unknown Rewards.“ IEEE Transaction on Automatic Control, 2023, under review.

Conference Publications

20. Khajenejad, M. “Computationally Efficient L1 and H∞ Optimal Interval Observer Design." European Control Conference (ECC), 2025, accepted [pdf]  

19. Khajenejad, M. “Optimal Feedback Stabilizing Control of Bounded Jacobian Discrete-Time Systems via Interval Observers." American Control Conference (ACC), 2024, submitted [pdf] [pdf] 

18. Khajenejad, M. and Martinez, S. “Guaranteed Privacy-Preserving H∞-Optimal Interval Observer Design for Bounded-Error LTI Systems.“ IEEE Conference on Decision and Control (CDC), 2024, accepted. [pdf] [pdf] [pdf] 

17. Khajenejad, M., Jin, Z., Dinh T.N. and Yong, S.Z. “Resilient State Estimation for Nonlinear Discrete-Time Systems via Input and State Interval Observer Synthesis.“ IEEE Conference on Decision and Control (CDC), Singapore, pages 1826-1832, 2023, (average acceptance rate: 56.7%). [pdf] 

16. Pati, T., Khajenejad, M., Daddala, S.P., Sanfelice, R.G. and Yong, S.Z. “Interval Observer Synthesis for Hybrid Dynamical Systems with Known Jump Times.“ IEEE Conference on Decision and Control (CDC), Singapore, pages 7507-7513, 2023, (average acceptance rate: 56.7%). [pdf] 

15. Brown, S., Khajenejad, M., Yong, S.Z. and Martinez, S. “Computing Controlled Invariant Sets of Nonlinear Control-Affine Systems." IEEE Conference on Decision and Control (CDC), Singapore, pages 7830-7836, 2023, (average acceptance rate: 56:7%). [pdf] 

14. Mandal, N., Khajenejad, M. and Martinez, S. “Control of Discrete-Time LTI Systems using Stochastic Ensemble Systems." SIAM Conference on Control and Applications (CT23), Philadelphia, Pennsylvania, pages 1-8, 2023. [pdf] 

13. Khajenejad, M., Brown, S., and Martinez, S. “Distributed Resilient Interval Observers for Bounded-Error LTI Systems Subject to False Data Injection Attacks." American Control Conference (ACC), San Diego, California, pages 3502-3507, 2023 (average acceptance rate: 67%). [pdf] 

12. Khajenejad, M., Brown, S., and Martinez, S. “Distributed Interval Observers for Bounded-Error LTI Systems." American Control Conference (ACC), San Diego, California, pages 2444-2449, 2023 (average acceptance rate: 67%). [pdf] 

11. Khajenejad, M., Shoaib, F. and Yong, S.Z. “Interval Observer Synthesis for Locally Lipschitz Nonlinear Dynamical Systems via Mixed-Monotone Decompositions.” American Control Conference (ACC), Atlanta, Georgia, pages 2970–2975, 2022 (average acceptance rate: 67%). [pdf] 

10. Khajenejad, M., Jin, Z., and Yong, S.Z. “Resilient Interval Observer for Simultaneous Estimation of States, Modes and Attack Policies.” American Control Conference (ACC), Atlanta, Georgia, pages. 322–329, invited paper, 2022 (average acceptance rate: 67%). [pdf] 

9. Khajenejad, M., Shoaib, F. and Yong, S.Z. “Guaranteed State Estimation via Indirect Poly-topic Set Computation for Nonlinear Discrete-Time Systems.” IEEE Conference on Decision and Control (CDC), Austin, Texas (Virtual), pages. 6167–6174, 2021 (average acceptance rate: 56.7%). [pdf] 

8. Khajenejad, M., Yong, S.Z. “Simultaneous Input and State Interval Observers for Nonlinear Systems with Rank-Deficient Direct Feedthrough.” European Control Conference (ECC), Rotterdam, The Netherlands (Virtual), pages 2311–2316, 2021 (average acceptance rate: 68%). [pdf] 

7. Khajenejad, M., Cavorsi, M., Niu, R., Shen, Q., Yong, S.Z. “Tractable Compositions of Discrete-Time Control Barrier Functions with Application to Driving Safety Control.” European Control Conference (ECC), Rotterdam, The Netherlands (Virtual), pp. 1303–1309, 2021 (average acceptance rate: 68%). [pdf] 

6. Khajenejad, M., Jin, Z. and Yong, S.Z. “Interval Observers for Simultaneous State and Model Estimation of Partially Known Nonlinear Systems.” American Control Conference (ACC), New Orleans, LA (Virtual), pages 2848–2854, 2021 (average acceptance rate: 67%). [pdf] 

5. Khajenejad, M. and Yong, S.Z. “Simultaneous Input and State Interval Observers for Nonlinear Systems with Full-Rank Direct Feedthrough.” IEEE Conference on Decision and Control (CDC), Jeju Island, South Korea (Virtual), pages 5443–5448, 2020 (average acceptance rate: 56.7%). [pdf] 

4. Jin, Z., Khajenejad, M. and Yong, S.Z. “Data-Driven Model Invalidation for Unknown Lipschitz Continuous Systems via Abstraction.” American Control Conference (ACC), Denver, CO (Virtual), pages 2975–2980, 2020 (average acceptance rate: 67%). [pdf] 

3. Khajenejad, M. and Yong, S.Z. “Simultaneous Mode, Input and State Set-Valued Observers with Applications to Resilient Estimation against Sparse Attacks.” IEEE Conference on Decision and Control (CDC), Nice, France, pages. 1544–1550, 2019 (average acceptance rate: 56.7%). [pdf] 

2. Khajenejad, M. and Yong, S.Z. “Simultaneous Input and State Set-Valued H∞-Observers For Linear Parameter-Varying Systems.” American Control Conference (ACC), Philadelphia, PA, pages 4521–4526, 2019. [pdf] 

1. Khajenejad, M., Afshinmanesh, F., Marandi, A. and Araabi, B.N. “Intelligent Particle Swarm Optimization Using Q-Learning.” Proceeding of IEEE Swarm Intelligence, pages 7–12, 2006. [pdf]