共查询到18条相似文献,搜索用时 156 毫秒
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人机系统最优预见补偿跟踪控制研究 总被引:4,自引:0,他引:4
1 引 言预见控制理论是最优跟踪控制问题的新的出发点 ,其有效性在机器人、数字机床等路径控制中得到证实[1 ] .本文将预见控制应用到人机控制系统 .人具有“先前看”的能力 ,尤其是训练有素的驾驶员具有积极利用未来目标信号提高跟踪品质的预见操纵行为 .以驾驶员 -飞机目标跟踪控制系统为例 ,在人的最优控制模型( OCM)基础上 ,通过目标信息的预见显示 ,建立人的最优预见控制模型 ( OPCM) .应用数字最优预见控制理论 [2 ] ,对信号发生器产生的目标信号进行预见跟踪控制 .2 驾驶员最优预见控制模型 ( OPCM)2 .1 数字最优预见控制最… 相似文献
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针对一类带有状态时滞的线性离散不确定系统,提出一种基于LMI的保性能预见控制器设计方法.首先引入差分算子,将时滞系统转换为一般系统,同时对可预见的未来目标值信号作差分处理,构造出包含未来目标值信息的扩大误差系统;其次引入保性能控制,导出扩大误差系统在相应性能指标下渐近稳定的充分条件;最后通过求解一个有LMI约束的优化问题,得到了系统的最优保性能预见控制律. 相似文献
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基于具有参数依赖的Lyapunov函数方法及LMI技巧,研究一类时变参数不确定离散时间系统的预见跟踪控制问题.首先,采用预见控制理论中误差系统的方法,引入两个与状态变量和输入变量有关的辅助信号,构造出包含未来目标值信号和干扰信号的信息的扩大误差系统,将原系统的预见跟踪问题转化为扩大误差系统的镇定问题;然后,针对扩大误差系统,考虑输出反馈时,通过改造输出方程融合可预见信号的未来信息.研究表明,通过求解LMI,即可确定静态输出反馈预见控制器增益矩阵的参数矩阵.数值仿真表明了结果的有效性. 相似文献
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基于参数依赖的Lyapunov函数方法及LMI技巧,研究一类参数不确定离散时间系统的有限时间输出反馈预见控制问题.首先,采用预见控制理论中误差系统的方法,引入差分算子和离散提升技术,构造出包含未来目标值信号和干扰信号的信息的扩大误差系统,将有限时间预见控制问题转化为扩大误差系统的有限时间稳定性问题;然后,针对所推导出的扩大误差系统设计输出反馈预见控制器,通过改造输出方程以充分利用可预见信号的未来信息,并通过LMI技巧给出闭环系统有限时间稳定的条件及预见控制器的设计方法.研究结果表明,通过求解LMI,可确定静态输出反馈预见控制器增益矩阵.数值仿真表明了所提出方法的有效性. 相似文献
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Optimal preview speed-tracking control for motorcycles 总被引:1,自引:0,他引:1
Robin S. Sharp 《Multibody System Dynamics》2007,18(3):397-411
Prior work on the application of optimal linear preview control to road vehicle steering is extended to deal with speed-profile
tracking as opposed to path tracking. The focus here is on motorcycles. An elaborate multibody motorcycle ride and handling
model from the literature is used as a basis for the development. This model is reduced from its general form to allow only
in-plane motions. A speed-controlled nonlinear version of the model is used to establish quasi-equilibrium or trim states
for running through a full speed range and a corresponding linear model for small-perturbations from any trim state, with
simple engine dynamics included, is used for the linear optimal control computations.
It is shown how the speed-tracking problem can be put into optimal linear preview control form and controls are derived and
shown as functions of speed and control tightness. As established in previous work, the optimal controls are demonstrated
to have state–feedback and preview parts. Diminishing returns for additional preview of the speed-demand are obtained, reinforcing
the notion that only finite preview is needed for full system performance. The preview needs of representative systems are
found. For very tight control, the necessary preview is short but a wide range of behaviours is possible, depending on the
balance between tracking precision and control power. In this instance, control power means engine power.
Frequency responses of some optimally controlled systems are calculated and near-perfect speed-tracking is demonstrated for
suitably band-limited and amplitude-limited demands. A simulation study shows the motorcycle motions in tracking a speed-profile
of sinusoidal form. 相似文献
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This paper presents the cooperative preview control method for continuous-time multi-agent systems with a time-invariant directed communication topology. First, the cooperative tracking preview control problem is transformed into the optimal regulation problem of an augmented system. Next, by applying the results of the standard optimal preview control of continuous-time linear systems, a controller of the augmented system is obtained. Furthermore, the stabilisability and detectability of the augmented system are studied under the fixed digraph and the prescribed leader. Then, we derive the controller of multi-agent systems with error integral and preview action that can guarantee the achievement of cooperative optimal preview tracking. Finally, the effectiveness of the controller is shown by numerical simulations. 相似文献
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近年来,为了改变依靠紧急停车、人工维护和故障排除的传统的维修方法,在一些技术应用领域中人们提出了自愈控制的思想.本文通过梳理智能电网的自愈控制、飞行控制系统的自愈控制和机器故障自愈调控的相关研究成果,明确了自愈控制的特征和功能并给出了其定义;其次,讨论了自愈控制、自愈系统和容错控制的联系与区别;最后,总结了研究自愈控制的意义并分析了其发展趋势.作者对自愈控制的相关技术应用领域及成果进行综述和深入分析,旨在提高自愈控制系统的规范化和重用性、提炼和总结其共性并给出自愈控制系统的基本架构,从而为其将来的理论研究奠定初步的基础、为指导实际的自愈控制的应用提供一定的参考. 相似文献
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The aim of this paper is to provide an overview, although unnecessarily complete, of recent advances in optimal control, optimization, and game theory for networked systems. First, the recent research results and progress in optimal control and game theory for logical domain networked systems are summarized. Then, the recent developments on networked optimization and game theory for continuous domain systems are presented afterward. Finally, after introducing some recent practical applications of optimal control and game theory on networked systems, we conclude the paper with a short discussion on future research perspectives. 相似文献
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Yonglong Liao Fucheng Liao 《International Journal of Control, Automation and Systems》2018,16(3):1080-1090
This paper makes it possible to design a preview controller for linear continuous-time systems with input delay, which expands the preview control theory. An augmented error system is established. And a variable substitution is used to transform the delay preview control system into a delay-free one whose preview controller uses the future value of the augmented state vector. The future value of the augmented state vector is estimated by the information of the current state vector, the control input on the past time window, and the reference signal on the future time window. Under the assumption of zero initial conditions, a simplified controller with both delay compensation and preview compensation is obtained for the original system. In addition, a preview controller with full-order observer is offered. Finally, simulation results are presented to illustrate the effectiveness and robustness of the controller. 相似文献
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针对一类线性连续时滞系统,提出一种最优预见重复控制设计方法.首先,通过一种等价变换,将被控时滞系统转化为无时滞系统.然后,利用L阶差分算子提升技巧,获得包含状态变量导数和跟踪误差的增广连续系统.在此基础上,通过定义一种新的性能指标,将预见重复控制设计问题转化为连续非自治系统的线性二次调节问题.进一步,基于最优控制理论,得到包含状态反馈、误差积分、重复控制、时滞补偿和预见补偿的最优预见重复控制器.该控制器包含了已有文献的多种控制器形式.最后,通过一个数值仿真实例,说明所提方法的有效性. 相似文献