摘要
为提升控制系统的性能,对直/气复合控制导弹的控制系统设计进行了研究。以俯仰通道为例,用最优控制理论设计了基于状态反馈的导弹俯仰通道控制回路,用线性二次型调节器(LQR)获得控制律。给出了加权矩阵的选取方法:依次调整表征过载偏差、角加速度和角速度的权重,使求出的反馈增益系数满足要求。针对状态反馈控制律无法快速抑制直接力开启带来的干扰问题,用自抗扰控制(ADRC)理论改进了控制器,通过构建状态观测器在线实时估计外界干扰并予以补偿,快速抑制扰动。仿真结果表明:用最优控制/自抗扰控制设计的控制器跟踪速度快,动态过程平稳并具有较强的干扰抑制能力,提高了系统的鲁棒性。
The design of aerodynamic/reaction blended control system is studied to improve the performance of control system in this paper.Taking pitch channel as an example,the control loop of the missile based on state feedback is designed by optimal control theory,and the control law is obtained by linear quadratic regulator(LQR).The determination method of weighted matrix is given.The weights of overload deviation,angular acceleration,and angular velocity are adjusted in order to make the derived feedback gain factor meet the requirement.To solve the problem that disturbance caused by reaction force opening cannot be suppressed quickly by the state feedback control law,the controller is amended by auto-disturbance-rejection control(ADRC)theory.The outer disturbance is estimated and compensated in real time by using state observer,and the disturbance is therefore suppressed quickly.The simulation results show that the controller designed by optimal control and ADRC can realize fast tracking with smooth dynamic process and strong disturbance resistance.The robustness of the control system is improved.
作者
陈光山
车荣
夏斌
彭继平
廖幻年
刘露
CHEN Guangshan;CHE Rong;XIA Bin;PENG Jiping;LIAO Huannian;LIU Lu(Shanghai Aerospace Control Technology Institute,Shanghai 201109,China;Shanghai Electro Mechanical Engineering Institute,Shanghai 201109,China)
出处
《上海航天》
CSCD
2018年第4期12-17,共6页
Aerospace Shanghai
基金
上海航天科技创新基金(SAST2017086)
关键词
导弹
直/气复合控制
俯仰通道
最优控制
自抗扰控制器
状态观测器
干扰抑制
missile
aerodynamic/reaction blended control
pitch channel
optimal control
auto-disturbance-rejection controller
state observer
disturbance resistance
