摘要
为充分利用多操纵面飞行控制系统的冗余控制效能,提出了一种权值自适应修正的混合优化控制分配策略。在考虑各操纵面位置约束和速率约束的基础上,建立了多目标混合优化控制分配模型;沿梯度下降方向自适应调整权值以改变控制指令,利用控制目标优化实现对虚拟控制指令的有效跟踪;证明了该模型的等价实现形式,推导了权值矩阵的自适应更新公式。仿真结果表明,该策略可综合考虑各操纵面不同的物理约束和控制效能,生成最优的操纵面协调偏转指令,避免了出现指令抖振的现象。
To make full use of the control surfaces＇ redundancy in multi-effector flight control system,a mixed control allocation scheme revising the weight matrix adaptively is presented.Subject to the actuator rate and position constraints,the mathematical model of multi-object control allocation is built.The weight is adaptively adjusted along the decreasing direction of the gradient so as to change the control command,then the optimal target is obtained,which ensures the tracking efficiency of virtual controls.The equivalent model is proved and the update law of the weight matrix is deduced.Simulation shows that the proposed method can consider the physical constraints and control efficiencies,create the optimal control command and avoid the chattering of effectors.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2011年第5期1118-1123,共6页
Systems Engineering and Electronics
基金
航空科学基金(2008ZC01006)
"十一五"国防预研项目资助课题
关键词
飞行控制系统
多操纵面
自适应控制分配
混合优化
flight control system
multi-effector
adaptive control allocation
mixed optimization
