PID Parameters Self-tuning Based on Simplex Method

PID controller is widely used in industry. This paper proposed a method of self-tuning PID parameters based on simplex method. The principle of simplex method is first introduced and then the PID parameters self-tuning. The method is easily realized step by step. It is implemented on the CNC machine tool. The experiment shows that the parameters optimized by simplex method are good and the machining performance is improved.