The Permanent Magnet Linear Synchronous Motor Distribution System Based on Fuzzy PID Control

Considering the disadvantages of the distribution system, which is made of the rotating machine and the mechanical transmission device, such as low positioning accuracy, vulnerable to load influence, this paper puts forward a new kind of distribution system consists of the permanent magnet linear synchronous motor (PMLSM), which is based on the fuzzy Proportional-Integral-Differential (PID) control. Having researched the equation of the permanent magnet linear synchronous motor on the direct-quadrture (d-q) axis, the paper not only gives the mathematical model of the vector control system, but designs the fuzzy Proportional-Integral-Differential velocity controller. Through the on-line adjustment of the parameters of fuzzy rules, the controlled objects can not only get wide speed range and high repeat positioning accuracy, but also keep the robustness of the outputs in special field conditions. Simulation results show that the control method has a strong perturbation resistance and stability, and the algorithm is also simple.