基于无速度传感器观测器的转速辨识

在矢量控制系统中,针对传统速度观测器辨识反应慢、精度低和稳定性差等问题,提出一种简化的增益矩阵选择方法,结合优化算法分析,设计了一种改进型速度状态观测器,并将此新型速度观测器结合MRAS辨识方法应用到无速度传感器调速系统中,使得系统稳定性与观测精度得到明显改善,动态性能也相应提高。在Matlab/Simulink下对相应控制系统构建仿真模型,通过仿真结果表明:采用改进观测器后的调速系统能更快速、准确辨识,系统性能更稳定。

Rotational speed identification based on speed-sensorless observer

In the vector control system,aiming at problems of slow identify response,low precision and poor stability of traditional speed observer,a kind of simplified gain matrix selection method is put forward,combined with optimization algorithm analysis,a kind of improved speed state observer is designed,and the new speed observer combined with MRAS is applied to speed-sensorless speed regulation system,the stability and observe precision of system is improved obviously,dynamic performance is also increased.The simulation model is constructed for corresponding control system in Matlab/Simulink.The simulation results show that speed control system with the improved observer is more rapid,it has more accurate identification and the system performance is more stable.