摘要
在深入研究鲁棒控制和电流滞环控制理论的基础上,设计了一种新型复合控制策略,并将其用于永磁同步电机(PMSM)的运动控制。该控制系统旨在完成同步电机的两大控制目标:一是使电机的速度和转矩分别快速跟踪时变的参考输入;另一目标是在负载转矩不确定情况下使电机具有强的鲁棒性。鲁棒控制部分设计出了基于Lyapunov稳定性、平均值理论及阻尼函数的非线性控制系统;为满足负载转矩的要求,将电流滞环控制方法应用到逆变模块中,以获得近似正弦波形的定子相电流。MATLAB/Simulink仿真表明,无论是在负载恒定还是负载不确定的情况下,该复合控制算法均能取得比传统PID控制优越的控制效果。
A new combined control method was designed for permanent magnet synchronous motors.The control system took advantages of robust control and current hysteresis control.It was aimed to achieve： forcing the PMSM to track time-varying speed and torque trajectories;keeping robustness in the case of load torque uncertainty.The part of robust control designs a nonlinear system based on the damping function.Lyapunov stability and average theory;then,the current hysteresis control was used in the inverter as to obtain a near-sinusoidal AC stator current.The effectiveness of the proposed combined control was shown better than PID method by computer simulations although the operating uncertainty.
出处
《电机与控制应用》
北大核心
2011年第8期26-30,35,共6页
Electric machines & control application
关键词
鲁棒控制
电流滞环脉宽调制
永磁同步电机
负载转矩
robust control
hysteresis current-controlled pulse width modulation
permanent magnet synchronous motor（PMSM）
load torque
