Abstract：A direct thrust force control (DTFC)scheme based on integral sliding mode for permanent magnet linear synchronous motor (PMLSM) servo system was proposed for the problems of ripple in the thrust force, steady state error and other issues. Considering speed and thrust force as the state variables, a second order nonlinear state space model was established in a synchronously rotating stator flux vector reference system. According to the space state, an integral sliding mode control law was established to replace the independent speed controller and thrust force controller. This simplified the control structure of the system and improved dynamic response of the system. The saturated function was selected as the switching function to reduce the chattering of sliding mode control (SMC) and eliminated the steady state error in speed tracking, improving the robustness of the system. Lyapunov stability analysis to prove the stability of the controller was provided. The effectiveness and feasibility of the proposed scheme is validated experimentally. Compared with DTFC using PI control, the DTFC system based on the integral sliding mode control gets faster dynamic response, excellent steady state speed control performance and strong robustness.
原浩, 赵希梅. 基于积分滑模的永磁直线同步电动机直接推力控制[J]. 电工技术学报, 2019, 34(3): 483-488.
Yuan Hao, Zhao Ximei. Direct Thrust Force Control Based on Integral Sliding Mode for Permanent Magnet Linear Synchronous Motor. Transactions of China Electrotechnical Society, 2019, 34(3): 483-488.
[1] 郭庆鼎, 孙宜标, 王丽梅.现代永磁电动机交流伺服系统[M].北京: 中国电力出版社, 2006. [2] 赵希梅, 赵久威.永磁直线同步电机的智能互补滑模控制[J]. 电工技术学报,2016,31(23):9-14. Zhao Ximei,Zhao Jiuwei.Intelligent complementary sliding mode control for permanent magnet linear synchronous motor[J]. Transactions ofChina Electrotechnical Society, 2016,31(23):9-14. [3] 赵希梅,王晨光.永磁直线同步电机的自适应增量滑模控制[J].电工技术学报,2017,32(11):111-117. Zhao Ximei,Wang Chenguang.Adaptive incremental sliding mode control for permanent magnet linear synchronous motor[J]. Transactions ofChina Electrotechnical Society, 2017,32(11):111-117. [4] 孙宜标, 王亚朋, 刘春芳.永磁直线电机自适应区间二型模糊滑模控制[J]. 沈阳工业大学学报,2017,39(6):601-606. Sun Yibiao, Wang Yapeng, Liu Chunfang.Adaptive interval type-2 fuzzy sliding mode control for permanent magnet linear motor[J]. Journal of Shenyang University of Technology, 2017, 39(6):601-606. [5] Zhu Yuwu, Cho Y H.Thrust ripples suppression of permanent magnet linear synchronous motor[J]. IEEE Transactions on Magnetics, 2007, 43(6):2537-2539. [6] Cheema M A M, Fletcher J E, Xiao Dan, et al. A direct thrust control scheme for linear permanent magnet synchronous motor based on online duty ratio control[J]. IEEE Transactions on Power Electronics, 2016, 31(6):4416-4428. [7] Mohammadpour A, Parsa L.SVM-based direct thrust control of permanent magnet linear synchronous motor with reduced force ripple[C]//IEEE International Symposium on Industrial Electronics, Gdansk, Poland,2011:756-760. [8] Preindl M, Bolognani S.Model predictive direct torque control with finite control set for pmsm drive systems, part 1: maximum torque per ampere operation[J]. IEEE Transactions on Industrial Informatics, 2013, 9(4):1912-1921. [9] Huang Y S, Sung C C.Implementation of sliding mode controller for linear synchronous motors based on direct thrust control theory[J]. IET Control Theory & Applications, 2010, 4(3):326-338. [10] 杨俊友, 崔皆凡, 何国锋. 基于空间矢量调制和滑模变结构的永磁直线电机直接推力控制[J]. 电工技术学报, 2007, 22(6): 24-29. Yang Junyou,Cui Jiefan,He Guofeng.Direct thrust control of PMLSMusing SVM and sliding mode variable structure[J]. Transactions ofChina Electrotechnical Society, 2007, 22(6): 24-29. [11] Inoue Y, Morimoto S, Sanada M.Examination and linearization of torque control system for direct torque controlled IPMSM[J]. IEEE Transactions on Industry Applications, 2010, 46(1):159-166. [12] Cheema M A M, Fletcher J E, Xiao Dan, et al. A linear quadratic regulator-based optimal direct thrust force control of linear permanent-magnet synchronous motor[J]. IEEE Transactions on Industrial Electronics, 2016, 63(5):2722-2733. [13] Liu Jianxing, Vazquez S, Wu Ligang, et al.Extended state observer-based sliding-mode control for three-phase power converters[J]. IEEE Transactions on Industrial Electronics, 2016, 64(1):22-31.
2019, Vol. 34 
