This project aims to develop and design an automatic electric wheelchair control system by studying the gain adjustment in PID control system. The purpose is to apply this amplification and fine adjustment technology to electric wheels using mechanical wheels. In this study, the motor system model controlled by PID is adopted. By comparing the gain adjustment technology of PID control system of Ziegler Nichols, Cohen Coon and Jean Rones Reswick. The (CHR)CHR method involves fine adjustment of left hanging and 20% hanging in four techniques. In this study, the behavior of the system in value will be considered. % OS that sets the time, time and motor system behavior. This is the best way to adjust the gain of PID control system.
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