摘要
针对具有反作用控制系统(Reaction Control System,RCS)和气动舵两类控制机构的再入飞行器,提出一种基于脉宽脉频(Pulse-Width Pulse-Frequency,PWPF)调节器的最优控制分配方法。将RCS的输入信号转化为连续变化量,RCS与气动舵的控制分配问题被描述为二次规划问题,并采用有效集方法对其求解。采用离散法和PWPF调节器将优化结果转化为RCS的开关机状态。与混合整数规划问题相比,连续二次规划问题更容易求解,计算速度更快。通过对二次规划问题的重构,该算法能有效地应对故障情况。
For the entry vehicle equipped with RCS(reaction control system)and rudder,an optimal control allocation method based on PWPF(pulsewidth pulse-frequency)modulator was proposed.By transforming the discrete control signal of RCS into the continuous quantity,the control allocation problem was constructed as a quadratic programming problem.And the active-set method was used to solve the quadratic programming problem.Then,the on-off signal of RCS was obtained by using the discrete method and PWPF modulator.Compared with the mixed integer programming problem,the quadratic programming problem is easier to be solved,which is favorable for on-board computing.The proposed method has the fault-tolerant ability by reconstituting the quadratic programming problem.
作者
王涛
曹晓瑞
张洪波
汤国建
WANG Tao;CAO Xiaorui;ZHANG Hongbo;TANG Guojian(College of Aeronautics and Astronautics,National University of Defense Technology,Changsha 410073,China;The PLA Unit 32032,Beijing 100094,China;Research&Development Center,China Academy of Launch Vehicle Technology,Beijing 100076,China)
出处
《国防科技大学学报》
EI
CAS
CSCD
北大核心
2018年第4期74-79,共6页
Journal of National University of Defense Technology
基金
国家部委基金资助项目(61422080106)
关键词
再入
控制分配
二次规划
脉宽脉频调节器
气动舵
反作用控制系统
entry
control allocation
quadratic program
pulse-width pulse-frequency modulator
rudder
reaction control system
