Research on Fuzzy PID Control Strategy of Hydraulic Parallel Six Degrees of Freedom Platform

Due to the nonlinear, strong coupling and hysteresis characteristics of the hydraulic parallel six-degree-of-freedom platform, the control strategy based on the traditional PID cannot get satisfactory control quality, and the fuzzy control alone makes the system control too rough. Therefore, this paper proposes to use the fuzzy control theory to adjust the PID control parameters online, so as to realize the parameter adaptive PID control strategy of the parallel six-degree-of-freedom platform, and build the model in MATLAB to simulate the system performance. The simulation results show that the system response of the six-degree-of-freedom platform under the fuzzy PID control strategy reduces the system overshoot compared with the traditional PID control strategy, accelerates the response time of the system, and improves the steady-state accuracy and dynamic characteristics of the system. It is of certain guiding significance to improve the control performance of the hydraulic parallel six-degree-of-freedom platform.