摘要
针对传统设计方法的保守性等缺点,本文引入概率设计思想对火箭的姿态控制器进行参数设计,使用可靠性衡量控制系统的指标满足情况,通过可靠性优化的方法进行参数寻优,并采用序列优化和可靠性评估算法提升算法效率。结果表明,可靠性优化方法设计的控制器参数使系统满足了指定的可靠性要求,同时减小了系统的性能需求,优化了设计方案。
Uncertainties commonly exist in the design of attitude controller of a rocket such as aerodynamics coefficients,mass,and propulsion,etc.,which produce deviations between real parameters and theoretical ones.Traditionally,the errors are introduced to design in such a manner that they cause the maximum deterioration of a system’s performance to guarantee fulfillment of performance under all possible uncertainties.However,such kind of design usually causes over conservatism because the worst case rarely occurs.Therefore,the concept of probabilistic design is used in this paper and the performance of a system by reliability is measured.Sequential optimization and reliability assessment(SORA)method is used to dramatically improve the efficiency of the optimization of controller parameters.The results show that reliability-based controller optimization provided the considered system with required reliability while relaxed the requirements of control system.The overall design is resultingly optimized.
作者
严恺
吴燕生
张兵
钟震
Yan Kai;Wu Yansheng;Zhang Bing;Zhong Zhen(Beijing Institute of Astronautical Systems Engineering,Beijing 100076,China;China Aerospace Science and Technology Corporation,Beijing 100048,China)
出处
《航天控制》
CSCD
北大核心
2020年第6期24-30,共7页
Aerospace Control
关键词
固体火箭
概率设计
姿态控制
可靠性优化
Solid rocket
Probabilistic design
Attitude control
Reliability based optimization
