基于预测电压调制与T-S模糊控制的PMLSM直接推力控制.docVIP

 基于预测电压调制与 T-S 模糊控制的 PMLSM 直接推力控制# 杨俊友，刘江华* 5 10 （沈阳工业大学电气工程学院，沈阳 110870） 摘要：为了进一步提高永磁直线同步电机（PMLSM）直接推力控制（DTC）系统的控制精 度，提出了基于预测电压调制和 Takagi-Sugeno（T-S）模糊策略的控制方法。利用预测电压 调制技术控制下一个周期磁链，空间矢量脉宽调制技术（SVPWM）逼近预测电压值，采用 T-S 模糊控制器控制动子速度和电磁推力。对比分析在 Matlab/Simulink 环境的下仿真结果， 基于预测电压调制和 T-S 模糊控制策略的 DTC 控制系统不仅明显减少电磁推力和磁链脉动， 而且对电机参数时变等非线性扰动具有较强的鲁棒性。 关键词：电力电子与电力传动；永磁直线同步电机；直接推力控制；预测电压调制；T-S 模 糊控制器；空间矢量脉宽调制 中图分类号：TM351 15 PMLSM direct thrust control based on predictive voltage modulation and T-S fuzzy control YANG Junyou, LIU Jianghua 20 25 30 35 40 (School of Electrical Engineering,Shenyang University of Technology,Shenyang 110870) Abstract: In order to further improve the control precision of permanent magnet linear synchronous motor (PMLSM) direct thrust control (DTC) system, a control method based on predictive voltage modulation and Takagi-Sugeno (T-S) fuzzy strategy was proposed. The predictive voltage modulation technology was used to control next periodic flux linkage, the space vector pulse width modulation (SVPWM) technology was applied to approach the predictive voltage values, and a T-S fuzzy controller was adopted to control mover speed and electromagnetic thrust. The simulation results in the Matlab/Simulink environment were compared and analyzed, and the proposed DTC control system based on predictive voltage modulation and Takagi-Sugeno (T-S) fuzzy control strategy not only obviously reduces the electromagnetic thrust and flux linkage pulsation, but also exhibits stronger robustness on nonlinear perturbations such as motor parameter time variation. Key words: power electronics and electric drive; permanent magnet linear synchronous motor; direct thrust control; predictive voltage modulation; T-S fuzzy controller; space vector pulse width modulation 0 引言 永磁直线同步电机（PMLSM）伺服系统具有高推力、低损耗、电气时间常数小、响应 速度快等特点，可有效消除机械速度变换所点来的不良影响，在高精度、微进给伺服系统中 得到了广泛的应用[1-2]。而且当引入直接推力控制技术（DTC）时，通过简单的坐标变换计 算实际的磁链和推力，运用 Bang-Bang 控制，直接控制变频器的开关状态，整个控制系统结 构简单，具有优良的静动态调速性能等优点[3]。但是由于直接推力控制采用滞环