摘要
针对导弹直接力/气动力复合控制中的控制分配问题,依据控制律设计和控制分配相分离的原则,建立了复合控制导弹的纵向控制动力学模型,提出了一种优化控制分配新算法,采用具有总体收敛性的信赖域方法求解约束二次规划问题,避免了对H esse矩阵的正定性要求;同时,根据所设计的侧喷发动机布局,提出了新的分配策略:直接力子系统根据分配指令选择合适的组合点火方式,而由于发动机推力不可控所造成的控制误差由气动力系统进行补偿.仿真结果表明:导弹纵向控制通道实现了优化分配且响应快速,系统稳定跟踪控制指令,结果令人满意.
The longitudinal blended dynamic model of missile with lateral thrust and aerodynamic control was developed according to the separation design of control allocation and control law.A kind of new optimal control allocation algorithm was proposed.Trust region method with global convergence was applied to solve constrained quadratic programming problem,without requirement of positive definiteness for Hesse matrix.A new allocation strategy was proposed according the position of lateral jet engine.The optimal ignition mode was selected by lateral thrust subsystem.Control error caused by the uncontrollable engine thrust would be compensated by aerodynamic subsystem.Simulation results show that the optimal allocation is realized in longitudinal control of missile by tracking the command steadily and quickly.The results are acceptable.
出处
《中北大学学报（自然科学版）》
CAS
北大核心
2011年第4期465-469,共5页
Journal of North University of China(Natural Science Edition)
基金
总装重点基金资助项目(6140529)
关键词
复合控制
优化控制分配
分配策略
信赖域
compound control
optimal control allocation
allocation strategy
trust region
