摘要
对框架式导引头视线稳定回路控制问题,提出了自抗扰控制器设计方法。视线稳定回路双通道所受干扰具有不确定性,通过线性扩张状态观测器对系统的总和扰动实时估计并予以动态补偿,使被控对象化为"积分器串联型",再利用跟踪微分器和PD控制设计ADRC控制律。试验结果表明,在低成本约束条件下,ADRC能将隔离度从7.5%降低到3%,较PID控制有更好的控制品质。
Based on frame seeker control system, an active disturbance rejection control (ADRC) is devised to ensure the high precision and high reliability. A linear extended state observer (LESO) is proposed for on-line estimation and compensation of the internal dynamics and external disturbance, and the plant dy- namics is predigested to a group of integrators. Then, the TD control rate is designed by utilizing tracking differentiator (TD) and PD controller. The experimental results indicate that better disturbance rejection rate and more excellent control characteristics can be achieved in the designed control system than PID con- troller.
作者
刘新宇
宋金来
金岳
王睿
张宇翔
Liu Xinyu Song Jinlai Jin Yue Wang Rui Zhang Yuxiang(Beijing Aerospace Institute of Microsystems, Beijing 100094, China)
出处
《航天控制》
CSCD
北大核心
2017年第3期9-13,18,共6页
Aerospace Control
关键词
PID
自抗扰控制
线性扩张状态观测器
跟踪微分器
隔离度
PID
Active disturbance rejection control (ADRC)
Linear extended state observer (LES0)
Tracking differentiator( TD )
Disturbance rejection rate