异步电机全维速度观测器若干参数变化的影响

为研究全维速度观测器中不同参数对其精确度和稳定性的影响,基于传统的异步电机动态数学模型,配置了全维速度观测器的参数,通过Matlab/Simulink仿真考察,分析了全维状态观测器中的增益矩阵参数、PI调节器参数及观测器中的电机参数误差对速度观测结果的影响.仿真结果表明:合理的观测器参数可以保证全运行状态内电动机观测值的收敛;观测器中的PI调节器参数主要影响其动态特性;电机参数的摄动会影响观测器的稳定性.

Parameter sensitivity analysis of full-order speed observer of induction motor

In order to investigate the observing influence of several parameters variations in the full-order rotor speed observer, this paper configures the parameters of a full-order rotor speed observer based on the conventional model of the induction motor. Investigations, such as the parameter selection of gain matrix used in the flux observer, the PI parameter design and the sensitivity of motor parame.ters used in the observer, were discussed through Matlab/Simulink simulations. The results show that the proper design of gain matrix in the observer can guarantee the converging of speed observation. Also the PI parameters in the observer mainly dominate the dynamics of speed observation. And proper selections of observer parameters can ensure the converging of speed observation in the whole operation region of induction motors, while the parameter uncertainties of induction motor will affect the stabilities of the observer.