Chattering reduction of functional electrical stimulation with the smith compensator

This paper describes the reduction of chattering in functional electrical stimulation (FES) with Smith compensator. We proposed a bilateral controller using FES. In the bilateral controller, in addition to normal remote control, the reaction forces of the distant location are transmitted back to the operator. Therefore, the operator feels like being in the distant location. In controlling of the human body using FES, a dead time occurs. As a result, high-frequency vibration (called chattering) occurs. In this paper, we propose a control method suppressing chattering in FES. In the experiment, the performance of the proposed method was verified by target value control and bilateral control. In the target value control, chattering was suppressed by the proposed method. However, in the bilateral control, chattering was not be suppressed by the interference of the time delay of the two subjects.