In this paper, we are concerned with output feedback stabilization for a one-dimensional anti-stable wave equation with disturbance. First, we design a disturbance estimator for the original system. Then, we propose a...In this paper, we are concerned with output feedback stabilization for a one-dimensional anti-stable wave equation with disturbance. First, we design a disturbance estimator for the original system. Then, we propose an output feedback controller for the original system. By calculation, the closed-loop of original system is proved to be exponentially stable and well-posed. Finally, this paper is summarized.展开更多
This paper has studied the output feedback regulation problem for 1-D anti-stable wave equation with distributed disturbance and a given reference signal generated by a finite-dimensional exosystem. We first design an...This paper has studied the output feedback regulation problem for 1-D anti-stable wave equation with distributed disturbance and a given reference signal generated by a finite-dimensional exosystem. We first design an observer for both exosystem and auxiliary PDE system to recover the state. Then we show the well-posedness of the regulator equations and propose an observer-based feedback control law to regulate the tracking error to zero exponentially and keep all the states bounded.展开更多
目前对于多端柔性直流输电系统(MMC-MTDC Transmission Systems)运行状态评判的相关研究还处在起步阶段,缺乏对M M C-MTDC输电系统在不同工况和控制策略下相应运行状态特征的有效提取、归纳及分析,所以亟需一种准确的状态评判方法为研究...目前对于多端柔性直流输电系统(MMC-MTDC Transmission Systems)运行状态评判的相关研究还处在起步阶段,缺乏对M M C-MTDC输电系统在不同工况和控制策略下相应运行状态特征的有效提取、归纳及分析,所以亟需一种准确的状态评判方法为研究MMC-MTDC运行状态变化提供判断依据.以多端柔性直流输电系统各类运行数据为基础,从功率、电压、频率、系统响应速度、可靠性和灵敏度6个角度出发,构造了一套评价系统运行状态的关键指标体系;针对现有评判方法的局限性,通过对反非广延熵统计特性的理论分析,构建一种新的系统运行状态分级评判方法—基于改进层次分析的反非延熵权法,该方法较好克服了同类算法评判辨识度低的缺点.最后基于OPT-5600实时仿真平台,通过五端柔性直流输电仿真算例验证了文中所提的评价指标体系及方法的有效性.展开更多
针对一类具有执行器饱和的非线性控制系统,提出了一种双环路的动态抗饱和补偿方案,为执行器输出受限的非线性系统提供了新思路.与现有结果相比,所提方案能更好地改善闭环系统控制性能.考虑执行器饱和约束,通过优化执行器饱和发生前后控...针对一类具有执行器饱和的非线性控制系统,提出了一种双环路的动态抗饱和补偿方案,为执行器输出受限的非线性系统提供了新思路.与现有结果相比,所提方案能更好地改善闭环系统控制性能.考虑执行器饱和约束,通过优化执行器饱和发生前后控制器的状态误差的积分性能指标,综合设计一类同时包含传统抗饱和及延迟抗饱和补偿器两个环路的改进抗饱和补偿器,这类补偿器有效地抑制了饱和现象对控制器的影响,从而降低了执行器饱和对控制系统性能的影响.当系统存在高饱和度现象时,利用该双环路抗饱和补偿器,可以最大程度弱化饱和对系统性能的影响.最后,利用输入状态稳定(Input state stability,ISS)定理分析和证明了该闭环系统全局一致有界稳定.并通过舵机执行器受约束的舵减横摇系统的仿真试验,验证了该方案的有效性及优越性.展开更多
文摘In this paper, we are concerned with output feedback stabilization for a one-dimensional anti-stable wave equation with disturbance. First, we design a disturbance estimator for the original system. Then, we propose an output feedback controller for the original system. By calculation, the closed-loop of original system is proved to be exponentially stable and well-posed. Finally, this paper is summarized.
文摘This paper has studied the output feedback regulation problem for 1-D anti-stable wave equation with distributed disturbance and a given reference signal generated by a finite-dimensional exosystem. We first design an observer for both exosystem and auxiliary PDE system to recover the state. Then we show the well-posedness of the regulator equations and propose an observer-based feedback control law to regulate the tracking error to zero exponentially and keep all the states bounded.
文摘目前对于多端柔性直流输电系统(MMC-MTDC Transmission Systems)运行状态评判的相关研究还处在起步阶段,缺乏对M M C-MTDC输电系统在不同工况和控制策略下相应运行状态特征的有效提取、归纳及分析,所以亟需一种准确的状态评判方法为研究MMC-MTDC运行状态变化提供判断依据.以多端柔性直流输电系统各类运行数据为基础,从功率、电压、频率、系统响应速度、可靠性和灵敏度6个角度出发,构造了一套评价系统运行状态的关键指标体系;针对现有评判方法的局限性,通过对反非广延熵统计特性的理论分析,构建一种新的系统运行状态分级评判方法—基于改进层次分析的反非延熵权法,该方法较好克服了同类算法评判辨识度低的缺点.最后基于OPT-5600实时仿真平台,通过五端柔性直流输电仿真算例验证了文中所提的评价指标体系及方法的有效性.
文摘针对一类具有执行器饱和的非线性控制系统,提出了一种双环路的动态抗饱和补偿方案,为执行器输出受限的非线性系统提供了新思路.与现有结果相比,所提方案能更好地改善闭环系统控制性能.考虑执行器饱和约束,通过优化执行器饱和发生前后控制器的状态误差的积分性能指标,综合设计一类同时包含传统抗饱和及延迟抗饱和补偿器两个环路的改进抗饱和补偿器,这类补偿器有效地抑制了饱和现象对控制器的影响,从而降低了执行器饱和对控制系统性能的影响.当系统存在高饱和度现象时,利用该双环路抗饱和补偿器,可以最大程度弱化饱和对系统性能的影响.最后,利用输入状态稳定(Input state stability,ISS)定理分析和证明了该闭环系统全局一致有界稳定.并通过舵机执行器受约束的舵减横摇系统的仿真试验,验证了该方案的有效性及优越性.
