[关键词]
[摘要]
针对永磁同步电机(PMSM)高阶非线性和外部负载扰动的问题,以反步法为基础,提出了动态面模糊离散速度调节控制方法。通过欧拉公式将PMSM连续模型离散化,得到离散模型;运用动态面方法,处理子系统中的虚拟控制函数,解决传统反步法中“计算爆炸”的问题;利用模糊逻辑系统逼近系统中的非线性部分,并给出模糊离散控制器。仿真结果表明:控制器能够有效地调节电机转速,对外部负载扰动具有良好的鲁棒性。
[Key word]
[Abstract]
Aiming at the problems of highorder non linearity and load disturbance of permanent magnet synchronous motor (PMSM), a discrete speed regulation control method based on dynamic surface control (DSC), fuzzy logic system (FLS) and backstepping was proposed. The continuous model of PMSMs was discretized by Euler formula. DSC was used to overcome the “explosion of complexity” problem which emerged in classical backstepping by processing the virtual control function in every subsystem. FLS was used to approximate the nonlinearities of the system. The simulation results showed that the proposed controllers could regulate the speed effectively and exhibited strong robustness against load disturbance.
[中图分类号]
TM 341
[基金项目]
国家重点研发计划项目(2017YFB1303503);国家自然科学基金项目(61573204,61573203);泰山学者工程专项经费项目(TSQN20161026)