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This work presents the improvements of Hydracer, a robot manipulator driven by electro-hydrostatic actuators, to achieve human-robot interaction. To solve the problems of Hydracer and to achieve fl...
This work presents the improvements of Hydracer, a robot manipulator driven by electro-hydrostatic actuators, to achieve human-robot interaction. To solve the problems of Hydracer and to achieve flexible force control, we worked on the system improvements: reduction of internal leakage by considering oil property, enhancement of reliability of ceramics components, and the parameter identification to improve its controllability. Flexible force control of Hydracer by zero-torque control with gravity compensation was realized.