Synchronization controller design of two coupling permanent magnet synchronous motors system with nonlinear constraints.
In this paper, two coupling permanent magnet synchronous motors system with nonlinear constraints is studied. First of all, the mathematical model of the system is established according to the engineering practices, in which the dynamic model of motor and the nonlinear coupling effect between two motors are considered. In order to keep the two motors synchronization, a synchronization controller based on load observer is designed via cross-coupling idea and interval matrix. Moreover, speed, position and current signals of two motor all are taken as self-feedback signal as well as cross-feedback signal in the proposed controller, which is conducive to improving the dynamical performance and the synchronization performance of the system. The proposed control strategy is verified by simulation via Matlab/Simulink program. The simulation results show that the proposed control method has a better control performance, especially synchronization performance, than that of the conventional PI controller.
Key Lab of Systems and Control, Academy of Mathematics and System Science, Chinese Academy of Sciences, Beijing 100190, China; School of Information Science and Engineering, Central South University, Changsha, Hunan 410004, China. Electronic address: deng_dzh@163.com.
Zhenhua
Z
Deng
School of Information Science and Engineering, Central South University, Changsha, Hunan 410004, China. Electronic address: shangjing@teg.cn.
Jing
J
Shang
School of Information Science and Engineering, Central South University, Changsha, Hunan 410004, China. Electronic address: xhnian@csu.edu.cn.
Xiaohong
X
Nian
Coupling multi-motor; Cross-coupling; Interval matrix; Permanent magnet synchronous motor (PMSM); Synchronization