摘要
永磁同步电机(PMSM)是一个典型的强耦合非线性系统,滑模控制中由于滑动阶段的不变性,其对系统参数的抗干扰能力较强,因此,在滑动阶段具有良好的鲁棒性,但滑模控制自身也存在着严重的抖振。引入边界层法,使得控制作用在边界层内部变为连续控制,边界层外为常规滑模控制,提高系统的运动性能。同时采用模糊控制器,实时在线调整滑模控制器切换变量中符号函数前的系数,减弱系统抖振。最后用MATLAB/SIMULINK建立仿真模型,在0.15 s时刻设置负载突变,仿真结果表明,模糊滑模变结构永磁同步电机系统矢量控制具有更好的鲁棒性及抗干扰能力。
Permanent magnet synchronous motor （all-digital fuzzy） is a typical system with strong coupling nonlin- ear characteristics. Due to the sliding phase invariability in the sliding mode control, it owns better anti-interfer- ence ability against system parameters, so the sliding phase has good robustness, but the sliding mode itself has the serious problem of buffeting. Boundary layer method is introduced so that control action within the boundary layer becomes continuous, whereas outside the boundary layer using conventional sliding mode control, so that the motion performance of the system is improved. By introducing the fuzzy controller at the same time and adjusting the real- time online coefficient of the sliding mode controller switching variable symbol function, the system chattering is weakened. Finally, a simulation model is built in MATLAB/SIMULINK, by setting a load mutation in the moment 0. 15 s. The simulation results show that the permanent magnet synchronous motor vector control system of the fuzzy sliding mode variable structure has better robustness and anti-interference ability.
出处
《电力科学与工程》
2016年第8期6-10,共5页
Electric Power Science and Engineering
基金
山东科技大学研究生创新基金(YC140337)
关键词
永磁同步电机
模糊控制
滑模变结构控制
边界层法
小波分析
permanent magnet synchronous motor
fuzzy control
the sliding-mode variable structure control
boundary layer method
wavelet analysis
