摘要
针对速度传感器不利于伺服驱动装置在恶劣条件下工作的特性,介绍了无速度传感器控制技术.利用全阶状态观测器的方法实现磁链观测和转速估算.以电机为参考模型,全阶观测器为可调模型,基于参考自适应理论,实现电机转速的辨识,进而实现无速度传感器控制.状态观测器实时观测非线性动态系统的参数和状态,估计状态以反馈方式进行校正.利用Matlab/Simulink构建无速度传感器矢量控制系统仿真模型.仿真结果表明:全阶状态观测器对转子磁链估计精度高,在宽转速的范围内有较好的稳定性能和动态性能.
In view of the fact that the speed sensor is not conducive to servo drive working in harsh conditions,we introduce the speed sensorless control technology. Using the full-order state observer,we achieve the flux observation and speed estimation. Taking the motor as a reference model,full-order observer as the adjustable model,the identification of motor speed is realized based on the reference adaptive theory,thus achieving speed sensorless control. State observer observes states and parameters of nonlinear dynamic system in real-time,and the estimated state is used as feedback correction. The speed sensorless vector control system simulation model is built by using Matlab / Simulink. Simulation results show that the full order state observer has high precision in estimating rotor flux,good stability and dynamic performance in a wide speed range.
出处
《江苏科技大学学报（自然科学版）》
CAS
2014年第6期580-584,共5页
Journal of Jiangsu University of Science and Technology:Natural Science Edition
