摘要
针对交流电机调速系统是一个高阶、非线性、强耦合的多变量系统,电机参数的变化、非线性、不确定性等因素不仅引起转矩脉动和误差,同时也引起线性PI控制器性能下降的特点,提出了一种PI控制和分数阶干扰观测器相结合的控制方法.这种方法通过构造分数阶干扰观测器来预测该结构系统中的各种干扰,并根据预测到干扰信息进行补偿以抑制干扰对系统的影响.仿真实验表明,这种控制方法具有较强的适应性和稳定性.
Aiming at the characteristics of high order, nonlinearity, strong coupling and more variable system of motor timing, the change of motor parameter, nonlinearity and uncertain factor resulted in torsion vibration, error, and the performance of non-linear PI controller declining, a novel control method combining the fractional disturbance observer with PI controller is proposed. Through estimating a variety of disturbance by using disturbance observer, the disturbance can be compensated, and the effect of disturbance is suppressed. The simulation results show that the control system has stronger adaptability and robustness.
出处
《大连交通大学学报》
CAS
2009年第3期79-82,共4页
Journal of Dalian Jiaotong University
基金
辽宁省教育厅高等学校科研计划资助项目(20060111)
关键词
分数阶干扰观测器
PI控制
电机调速系统
fractional-order disturbance observer
PI control
motor timing system
