摘要
针对五自由度磁悬浮轴承控制系统,设计了一种线性自抗扰控制(linear active disturbance rejection control,LADRC)策略.利用扩张状态观测器实时估计由系统内部参数不确定性和外部扰动构成的总扰动量,并通过设计的PD控制律补偿扰动对被控对象输出的影响,提出整定控制器带宽参数和观测器带宽参数的方法.通过仿真曲线和控制系统性能指标计算,对比线性自抗扰控制策略与传统PD和PID控制策略.结果表明:本文提出的线性自抗扰控制策略可有效改善系统的动静态性能,控制精度有一定提高,满足了系统快速响应的要求.
This paper designs a control strategy of the magnetic bearing control system with five degrees of freedom based on the linear active disturbance rejection control(LADRC).The extended state observer(ESO)is used to estimate the uncertainty of the internal parameters and the total disturbance composed of external disturbances.The LADRC control strategy is compared with traditional PD and PID control strategy by simulation curve and performance index calculation.The simulation results show that the LADRC strategy can effectively improve the dynamic and static performance of the system.The proposed method has better control precision and meet the requirement of fast response for control system of magnetic bearing.
作者
关海爽
张建民
蒙彦宇
GUAN Haishuang;ZHANG Jianmin;MENG Yanyu(College of Electrical and Information Engineering,Beihua University,Jilin 132021,China;College of Civil Engineering and Transportation,Beihua University,Jilin 132013,China)
出处
《北华大学学报（自然科学版）》
CAS
2020年第5期675-681,共7页
Journal of Beihua University（Natural Science）
基金
吉林省教育厅科学技术研究项目(2015135,JJKH20190648KJ)
吉林市科技创新发展计划杰出青年人才培养项目(201831767).
关键词
磁悬浮轴承
控制策略
参数整定
线性自抗扰控制
magnetic bearing
control strategy
parameters setting
linear active disturbance rejection control
