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A direct characterization of L/sub 2/-gain controllers for LPV systems

机译:LPV系统的L / sub 2 /增益控制器的直接表征

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摘要

In this paper, a class of linear parameter dependent output feedback controllers that satisfy quadratic stability and an induced L/sub 2/-norm bound for a given linear parameter-varying (LPV) plant is considered. By using a parameter-independent common Lyapunov function, the solvability conditions are expressed in terms of finite dimensional linear matrix inequalities (LMI) evaluated at the extreme points of the admissible parameter set. Conditions under which strictly proper controllers can be used are obtained. By restricting some of the controller matrices to be constant, the input and output matrices can be parameter-varying without destroying the problem's convexity. Cases where the controller matrices can be obtained without interpolation are also discussed, thereby simplifying the implementation of the controller. A numerical example is included which demonstrates the application of the results.
机译:在本文中,考虑了一类线性变量相关的输出反馈控制器,该控制器满足二次稳定性和对于给定的线性变量(LPV)装置的诱导L / sub 2 /范数界。通过使用独立于参数的通用Lyapunov函数,可溶性条件以在允许参数集的极点评估的有限维线性矩阵不等式(LMI)表示。获得了可以使用严格适当的控制器的条件。通过将某些控制器矩阵限制为常数,输入和输出矩阵可以更改参数,而不会破坏问题的凸性。还讨论了无需插值即可获得控制器矩阵的情况,从而简化了控制器的实现。包含一个数值示例,演示了结果的应用。

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