摘要
针对永磁同步电动机驱动泵控缸系统中存在的随机性负载扰动,提出采用模型跟踪控制和负载转矩前馈补偿复合的算法,通过对电机转矩和转速的实时估计,补偿控制电流,抑制负载扰动引起的性能变化,同时采用共振比控制,在负载转矩反馈环节引入共振比参数,消除电机和液压系统耦合振动,提高系统抗扰动性能。通过对采用上述方法后永磁同步电动机泵控缸系统的仿真和试验研究,证实该方法对随机扰动和参数变化均具有很强的鲁棒性,同时可提高系统的控制精度。
In the permanent magnet synchronous motor（PMSM） driven pump controlled cylinder system,aim at the random load disturbances,compound control algorithm of model tracking control and load torque feed-forward compensation was proposed.By real-timely estimating the motor torque and rotation speed,control current was compensated and system instability was controlled.At the same time,resonance ratio control was adopted.By introducing resonance ratio control parameter in load torque feedback link,the coupling oscillation of system was eliminated and the performance of disturbance rejection was improved.The system simulation and test confirm that it has highly robustness for random disturbance and parameter changes,and then the control precision of the system is improved.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2010年第33期84-89,共6页
Proceedings of the CSEE
基金
国家自然科学基金资助项目(50775156)
浙江大学流体传动及控制国家重点实验室开放基金资助(GZKF-2008006)~~
关键词
永磁同步电动机
模型跟踪控制
抗扰
共振比
permanent magnet synchronous motor
model following control
resist-disturbance
resonance ratio
