时滞对象LQ次优控制  

LQ Sub-optimal Control for the Processes with Time Delay

作　　者：杨启文[1] 蒋静坪[1] 曲朝霞[2] 张国宏[1] 

机构地区：[1]浙江大学电机系,杭州310027 [2]山东建材学院信控系,济南250022

出　　处：《仪器仪表学报》2000年第6期610-613,共4页Chinese Journal of Scientific Instrument

摘　　要：本文改进了传统无限时间 L Q跟踪调节器的设计方法 ;利用 Pade逼近法 ,得到时滞环节的低维状态空间 ;通过有限维状态反馈 ,实现了时滞对象的二次型次优控制。对于难控度大的时滞对象 ,本文在大量仿真的基础上 ,给出了加权阵的一组经验公式。比较研究表明 ,该方法跟踪速度快而且过程平稳 ,同时还具有很好的参数 (TP、τ)鲁棒性。The traditional method of designing LQ tracking regulator with infinite time is improved in this paper.The low dimension state space of the processes with time delay is obtained by means of Pade method.The linear quadratic sub optimal control(LQSOC)for this kind of processes is realized by the finite dimension state feedback.A set of experiential formulae for the process with high difficult control degree is given based on computer simulation.The compared results show that LQSOC has not only quick and steady transient process but also high parameter(T p、τ) robustness.

关 键 词：时滞 预置稳定度 次优控制 鲁棒性 LQSOC 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]