Abstract
For the disadvantages of low efficiency, slow speed response and unsteady speed regulation performance in the application of traditional motor drive in valve less hydraulic system, A vector controlled permanent magnet synchronous motor (PMSM) is proposed to replace the conventional motor to drive the quantitative pump in the valveless system, and a mathematical model of the valveless hydraulic system is established. In view of the non-linear and time-varying problems in the control process of the valve free hydraulic system designed, the traditional PID is difficult to solve. So the fuzzy PID position controller based on the system designed is designed. The joint simulation of the hydraulic system is carried out by using AMESim and Matlab software, and the simulation results are compared with the simulation results with traditional PID. The joint simulation results show that the fuzzy PID control method has a good effect on response speed, anti-interference and position tracking accuracy.
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