共查询到20条相似文献,搜索用时 46 毫秒
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研究含有测量时滞的线性系统的故障诊断和自修复控制问题.提出了一种测量时滞系统基于降维状态观测器的故障诊断方法.通过构造含有故障状态的增广系统并进行增广系统测量时滞的无时滞转换,将测量时滞系统的故障诊断问题转化为无时滞增广系统的状态观测问题.通过构造增广系统的降维状态观测器,设计了在线诊断故障的故障诊断器.利用故障诊断的结果,设计了故障的动态自修复控制律使系统在故障情况下能够正常运行.最后,通过一个仿真算例来验证本文所提出的方法的可行性和有效性. 相似文献
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研究一类受外界扰动非线性互联动态大系统的最优扰动抑制问题。根据有限时域二次型性能指标,提出了一种基于逐次逼近思想的大系统近似最优扰动抑制方法。利用该方法将由原系统得到的高阶耦合的非线性两点边值问题简化为一族解耦的线性两点边值问题序列。证明了该序列的解一致收敛于原非线性互联大系统的最优控制。通过截取最优控制序列的有限次逼近值,可以得到非线性互联大系统近似最优扰动抑制控制律。最后通过数值仿真表明了该方法的有效性。 相似文献
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非线性系统开闭环PD型迭代学习控制的鲁棒性 总被引:1,自引:0,他引:1
利用开闭环PD型迭代学习控制算法,对一类具有不确定性或扰动的重复非线性时变系统的鲁棒性进行研究,给出了该系统在开闭环PD型迭代学习控制律控制下的鲁棒条件,并证明了该受扰系统在干扰有界的情况下跟踪误差的一致有界收敛性,当所有干扰渐近消失时,系统输出渐近跟踪给定的期望轨迹。数字仿真表明了结论的有效性。 相似文献
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针对一类参数化非线性时滞输出反馈系统,提出了一种自适应输出跟踪控制器的设计方案。引入时滞滤波器估计未知系统状态,采用backstepping技术设计控制律和参数自适应律,运用占优方法处理非线性时滞项,从而放宽了对非线性时滞函数的要求,实现了对给定目标轨线的全局渐近跟踪,同时保证闭环系统所有信号一致有界。基于Lyapunov-Krasoviskii泛函方法证明了整个闭环系统的稳定性。实例仿真说明了该方案的可行性。 相似文献
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汽车主动悬架系统的最优跟踪控制 总被引:1,自引:0,他引:1
研究汽车主动悬架系统的线性二次型最优跟踪控制问题.基于两自由度1/4汽车悬架主动控制模型,通过利用参考输入外系统的状态来构造前馈控制作用,得到了系统的最优跟踪控制律.该跟踪控制律由状态反馈项和前馈补偿项构成,前馈增益可以通过求解矩阵方程得到.仿真算例表明了采用前馈反馈控制方法进行悬架系统最优跟踪设计的有效性. 相似文献
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《系统工程理论与实践》2014,(5)
正August 10-14,2015Beijing,ChinaThe International Congress on Industrial and Applied Mathematics(ICIAM)is the premier international congress in the field of applied mathematics held every four years under the auspices of the International Council for Industrial and Applied Mathematics.From August 10 to 14,2015,mathematicians,scientists 相似文献
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《系统科学与系统工程学报(英文版)》2014,(2)
正AF:Any Field The School of Economics and Management at Tsinghua University(Tsinghua SEM)invites applications for faculty positions at all levels(Assistant Professor,Associate Professor and Full Professor)in any fields of business administration and management.Tsinghua SEM is the only school 相似文献
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《系统科学与系统工程学报(英文版)》2014,(4)
正June 22-24,2015Guangzhou,China http://iec.cnsba.com/index.htmlCo-Sponsored by:ffiEE SMC(pending)South China University of Technology The Chinese University of Hong Kong Tsinghua UniversityHosted bv:School of Business Administration,South China University of Technology,China Conference Co-Chairs: 相似文献
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The paper is about negotiating with issues that discourage innovation. The subject is environmental deterioration, with concern directed at the impediments that keep it from being innovatively resolved. The paper is organized around three issues. (1) The dominant model of environmental concern, called environmental protection, is managed predominantly via command and control approaches. (2) Command and control, by relying on analytical segmentation to subdivide the problem into digestible bits and using formal legislation to direct it, are not up to emerging challenges in the area. (3) More robust models are available but difficult to experiment with due to impediments that discourage change. These impediments are seen in ideals associated with protection, prevention, recycling, and sustainability that tend to do more to sustain harmful practices than to seek beneficial alternatives. Being able to appreciate the underlying restrictions of entropy could help stimulate a more innovative agenda. These issues are tested via a project funded by the EPA entitled ENERGY STAR Homes. 相似文献