共查询到19条相似文献,搜索用时 140 毫秒
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H∞最优控制系统设计及应用 总被引:1,自引:0,他引:1
本文介绍了H_∞最优控制理论的基本内容及发展慨况.主要介绍了 H_∞标准问题的三种设计方法及 H_∞最优化方法在线性控制理论其他问题与工程实际中的应用. 相似文献
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本文以明斯克一批学者创建的最优控制问题的算法为基础提出了一个用于解决反馈最优控制问题的新方法。对综合问题给出了一个动态提法,构造了一个用于解决实时最优控制问题的算法。研究对象为具有分段线性输入装置系统在具有控制及终端状态约束下的端点最优控制问题。 相似文献
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分段线性函数应用于线性时变系统的最优控制 总被引:4,自引:0,他引:4
本文给出了分段线性函数的一些运算性质,利用这些性质求解线性时变系统基于二次型性能指标的最优反馈控制律,推导出了形式简明的求解算法,该算法较之于方块脉冲函数算法具有更高的计算精度。 相似文献
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针对一类线性系统,首先设计了一种模糊控制器保证闭环系统的稳定性.根据得到的结果,如果只需满足稳定性条件,可以有很大的空间选择控制器参数.因此,本文根据Pontryagin最小值原理给出了一种最优模糊控制器的设计方法. 相似文献
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本文基于最优控制和极点配置理论,提出一种灵敏度低、动特性好的次最优鲁棒调节器设计法。它具有计算方便、结构简单的特点。 相似文献
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Optimal Decoupling Control Method and Its Application to a Ball Mill Coal-pulverizing System
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The conventional optimal tracking control method cannot realize decoupling control of linear systems with a strong coupling property. To solve this problem, in this paper, an optimal decoupling control method is proposed, which can simultaneously provide optimal performance. The optimal decoupling controller is composed of an inner-loop decoupling controller and an outer-loop optimal tracking controller. First, by introducing one virtual control variable, the original differential equation on state is converted to a generalized system on output. Then, by introducing the other virtual control variable, and viewing the coupling terms as the measurable disturbances, the generalized system is open-loop decoupled. Finally, for the decoupled system, the optimal tracking control method is used. It is proved that the decoupling control is optimal for a certain performance index. Simulations on a ball mill coal-pulverizing system are conducted. The results show the effectiveness and superiority of the proposed method as compared with the conventional optimal quadratic tracking (LQT) control method. 相似文献
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有限时间二次型数值算法研究及其应用 总被引:1,自引:1,他引:0
为了实际需要和学术发展的要求,研究了以倒立摆为控制对象,通过闭环网络形成的反馈控制系统的随机传输时延的最优控制问题。在求解有限时间最优控制律过程中,通过矩阵Raccati方程的离散变换,利用Matlab中计算无限时间二次型最优控制器的LQR函数,从而求出有限时间LQR问题的数值解。通过仿真结果证明,研究的方法能够使倒立摆系统最终稳定,从而说明提出的算法对于求解有限时间LQR问题是有效的。 相似文献
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线性离散奇异系统的不定二次最优控制问题: Krein空间方法 总被引:1,自引:1,他引:0
The finite time horizon indefinite linear quadratic(LQ) optimal control problem for singular linear discrete time-varying systems is discussed. Indefinite LQ optimal control problem for singular systems can be transformed to that for standard state-space systems under a reasonable assumption. It is shown that the indefinite LQ optimal control problem is dual to that of projection for backward stochastic systems. Thus, the optimal LQ controller can be obtained by computing the gain matrices of Kalman filter. Necessary and sufficient conditions guaranteeing a unique solution for the indefinite LQ problem are given. An explicit solution for the problem is obtained in terms of the solution of Riccati difference equations. 相似文献
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In this paper, adaptive linear quadratic regulator (LQR) is proposed for continuous-time systems with uncertain dynamics. The dynamic state-feedback controller uses input-output data along the system trajectory to continuously adapt and converge to the optimal controller. The result differs from previous results in that the adaptive optimal controller is designed without the knowledge of the system dynamics and an initial stabilizing policy. Further, the controller is updated continuously using input-output data, as opposed to the commonly used switched/intermittent updates which can potentially lead to stability issues. An online state derivative estimator facilitates the design of a model-free controller. Gradient-based update laws are developed for online estimation of the optimal gain. Uniform exponential stability of the closed-loop system is established using the Lyapunov-based analysis, and a simulation example is provided to validate the theoretical contribution. 相似文献
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张伟 《计算技术与自动化》2011,30(3):20-23
基于状态反馈的线性二次型最优控制的研究已经取得了较好的效果,设计一款基于状态反馈的线性二次型最优控制器,并将它用在一个实际的状态方程中进行设计.该文所设计的控制系统结构简单,成本低,且易于实现.通过仿真实验以及性能指标的比较,仿真结果表明所设计的控制器是有效的,对系统的动态响应具有较好的跟踪效果,且抗扰能力较强. 相似文献
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针对我国造纸行业现代化管理水平和自动控制程序较低,环境污染较重的现状,研制开发造纸生产过程集成优化控制系统,通过建立蒸煮、洗选、漂白、抄纸,碱回收和热电调荷的优化控制子系统,构造了集生产,调度、管理、决策相结合的计算机集成优化控制系统,并成功地在某大型造纸厂建成综合示范工程。 相似文献