针对分数阶模型参考自适应系统(Fractional Order Model Reference Adaptive System,FOMRAS)在永磁直线同步电机(Permanent Magnet Linear Synchronous Motor,PMLSM)直接推力控制(Direct Force Control,DFC)下转速估计误差大、响应速度...针对分数阶模型参考自适应系统(Fractional Order Model Reference Adaptive System,FOMRAS)在永磁直线同步电机(Permanent Magnet Linear Synchronous Motor,PMLSM)直接推力控制(Direct Force Control,DFC)下转速估计误差大、响应速度慢、抗干扰能力差等现象,提出一种改进FOMRAS算法,即速度辨识中使用改进的分数阶自适应律,对转速进行跟踪,减小推力响应的抖动,确保估计值快速逼近真实值。运用于DFC中,实现无速度传感器控制。仿真结果表明:采取改进FOMRAS的无速度传感器PMLSM-DFC,抗扰动能力明显加强,具有良好的动静态能力,确保了系统稳定性。展开更多
基金Supported-by Program for New Century Excellent Talents in Universities of China (NCET-05-0607), National Natural Science Foundation of China (60774010), and Program for Fundamental Research of Natural Sciences in Universities of Jiangsu Province (07KJB510114)
基金Supported by Program for New Century Excellent Talents in Universities of China (NCET-05-0607), National Natural Science Foundation of China (60774010), and Project for Fundamental Research of Natural Sciences in Universities of Jiangsu Province (07KJB510114)
文摘针对分数阶模型参考自适应系统(Fractional Order Model Reference Adaptive System,FOMRAS)在永磁直线同步电机(Permanent Magnet Linear Synchronous Motor,PMLSM)直接推力控制(Direct Force Control,DFC)下转速估计误差大、响应速度慢、抗干扰能力差等现象,提出一种改进FOMRAS算法,即速度辨识中使用改进的分数阶自适应律,对转速进行跟踪,减小推力响应的抖动,确保估计值快速逼近真实值。运用于DFC中,实现无速度传感器控制。仿真结果表明:采取改进FOMRAS的无速度传感器PMLSM-DFC,抗扰动能力明显加强,具有良好的动静态能力,确保了系统稳定性。