Control reconfiguration of LPV systems using virtual sensor and actuator
Control reconfiguration of LPV systems using virtual sensor and actuator
复制标题
使用虚拟传感器和执行器控制 LPV 系统的重新配置
DOI：
10.3182/20120829-3-mx-2028.00117
复制
发表时间：
2012
期刊：
影响因子：
--
通讯作者：
T. Bak
中科院分区：
文献类型：
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作者：
S. Tabatabaeipour;J. Stoustrup;T. Bak
摘要提出了一种基于虚拟执行器和虚拟传感器的线性变参数系统容错控制方法。该方法的基本思想是在被控对象和标称控制器之间插入一个由LPV虚拟执行器和LPV虚拟传感器组成的重构块，从而在不重新设计标称控制器的情况下实现容错目标。重构块的作用是转换来自故障系统的信号，使得从控制器的角度来看，其行为类似于标称系统，并且转换故障系统的控制器的输出，使得保持稳定性和性能目标。本文研究了闭环系统的弱故障隐藏目标和稳定性问题。通过求解线性矩阵不等式（LMI），找到了虚拟执行器和传感器的状态稳定LPV增益的输入。我们表明，这些增益的单独设计保证了闭环输入状态稳定的闭环重构系统。
Abstract In this paper, a fault tolerant control method for linear parameter varying (LPV) systems using a virtual actuator and a virtual sensor is proposed. The basic idea of the method is to insert a reconfiguration block, which consists of an LPV virtual actuator and an LPV virtual sensor, between the plant and the nominal controller such that the fault tolerant goal is achieved without re-designing the nominal controller. The role of the reconfiguration block is to transform the signals from the faulty system such that its behavior is similar to the nominal system from the point of view of the controller and to transform the output of the controller for the faulty system such that the stability and performance goals are preserved. In this paper, we consider the weak fault-hiding goal and stability of the closed loop system. Input to state stabilizing LPV gains of the virtual actuator and sensor are found by solving linear matrix inequalities (LMIs). We show that separate design of these gains guarantees the closed loop input to state stability of the closed loop reconfigured system.