摘要
制导炸弹在大空域飞行过程中受到外界干扰和未建模摄动都较大,为了适应较大摄动,采用混合灵敏度方法来设计鲁棒控制器。首先推导了包含S/T/R的广义受控对象的状态空间模型,将混合灵敏度问题化为标准H∞问题。然后针对混合灵敏度问题中如何选取权函数的关键性问题,讨论了权函数选取的一般原则,提出了权函数选取的一般方法,并尝试给出权函数的一般形式。最后采用该方法对制导炸弹滚转通道进行了控制器设计,仿真结果表明:H∞控制器有较好的鲁棒性能,且比传统PID控制有更好的时域性能。
Because of the external disturbance and un-modeled perturbation through the guided bomb flying in huge airspace, a robust controller was designed by the mixed sensitivity approach. Firstly, this paper deduces the state space model including S/T/R, and through this way the mixed sensitivity problem is transformed into standard H∞ problem. Then according to how to choose weighting functions, this paper discusses the general selection principle, and proposes the general selection method, and also tries to give the general forms. Finally, the robust controller for the roll-channel of the bomb was designed by this method. The simulation results show that the H∞ controller has the better robust and time domain performance.
出处
《火力与指挥控制》
CSCD
北大核心
2009年第8期137-140,共4页
Fire Control & Command Control
基金
国家部委基金项目资助(514530601052S3301)
南京理工大学科研发展基金资助(XKF05031)
关键词
制导炸弹
混合灵敏度
加权函数
guided bomb ,mixed sensitivity ,weighted function
