关键词: 永磁直线同步电动机, 非奇异快速终端滑模控制, 收敛性, 自适应, 鲁棒性

Abstract: The position tracking accuracy of permanent magnet linear synchronous motor ( PMLSM ) was easily affected by external disturbance, an adaptive non-singular fast terminal sliding mode control ( ANFTSMC ) method was designed. The mathematical model of PMLSM was established. In order to solve the problems such as slow convergence and possible singularity in sliding mode control ( SMC) system, Non-singular fast terminal sliding mode control ( NFTSMC) was used to solve problems, so as to ensure the system convergence without singularity and improve rapidity. The addition of the adaptive law to estimate the upper bound of the unknown disturbance could ensure the improvement of the robustness of the system. Through simulation analysis, it can be concluded that compared with SMC and NFTSMC, the method can solve the problem of slow convergence speed, and improve the tracking accuracy and robustness.

Key words: permanent magnet linear synchronous motor ( PMLSM), adaptive non-singular fast terminal sliding mode control( ANFTSMC), convergence, adaptation, robustness