Command shaping with transition of state for smooth force control

This paper proposes a design method of command compensator with transition of state for command shaping. In the future, a robot is required to be introduced in human society. In this case, force control of high performance is important element of a robot control system. Moreover, it is important that a robot automatically changes a command in accordance with circumstances and a control specification. When the command is changed, there is some possibility that the command becomes discontinuous. Then, it is dangerous because robots might do unexpected motion or become out of control. Therefore, the proposed method focuses on a command difference between pre-transition and post-transition. Moreover, the proposed method considers transition of state. By using the proposed method, a discontinuity of command is solved and the smooth force control and motion can be realized in accordance with circumstances and a control specification. In the experiments, force control having some commands in order to realize a pushing motion stably and repeatedly is applied. The validity of the proposed method is confirmed through experiments.