In this period, I learned how to make parts by using SolidWorks also knowledge about the electrical circuit and LabVIEW programming. We achieved backdrivability of the hydraulic actuator by using magnetorheological fluid.
In this project, I worked with my team members to build the prototype independently. I mastered SolidWorks as well as ANSYS for magnetic field analysis. The minimize of MRF actuator also has been done, which obtains good backdrivability. Next, we will cooperate with Nagoya Institute of Technology to analyze the magnetic field and flow rate to optimize the MRF actuator.
In this project, I helped a senior student build a machine with variable impedances, including damping factor, elasticity, and inertia. In this project, I also created a mechanism with adjustable inertia, so that the robot is able to move fast and efficient.
Based on our experience, the sedimentation of MRF can affect the performance of MR actuator. Therefore, we cooperated with Nippon Paint to fabricate an anti-sedimentation MRF from the medium, additive, and magnetic substances. The MRF also tested in MRF damper, the results show our MRF is superior to the commercial product.
We developed a new MRE, the weight ratio of magnetic particles increases to 75 wt%. Now, the MRE suction cup has been done, the deformation can be generated, which can be used for soft robotics.
In order to develop a robot system for pHRI, we try to improve the hardware by smart material, such as MRF. And now, we start to make MR devices, such as MR actuator, MR hand, and MR clutch. Nippon Paint also supports us to fabricate new MRF that fit for different applications.
The cBot we developed consists of a motion base, a sensor base. By using this robot, the operator can learn how to program and make application by themselves. In addition, this robot is already used in Waseda University and Tsinghua University as teaching aids.