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arXiv 1209.0345math.OC
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仿射LPV系统:实现理论,输入输出方程和线性切换系统的关系

Affine LPV systems: realization theory, input-output equations and relationship with linear switched systems

Mihaly Petreczky, Guillaume Mercère, Roland Tóth

摘要:

我们制定了卡尔曼风格的实现理论的离散时间仿射LPV系统。仿射LPV系统是指其矩阵是调度参数的仿射函数的LPV系统。在本文中,我们描述了这些输入输出行为,正是对应于仿射LPV系统。此外,我们还刻画了实现给定输入输出行为的极小仿射LPV系统。此外,我们解释了马尔可夫参数,Hankel矩阵,仿射LPV实现的存在性和极小性之间的关系。结果是通过减少问题的线性切换系统的实现问题。这样,作为第二个贡献,我们正式证明LPV系统和线性切换系统之间的密切关系。此外,我们证明了一个输入输出映射有一个仿射LPV系统的实现当且仅当它满足某些类型的输入输出方程。

英文摘要:

We formulate a Kalman-style realization theory for discrete-time affine LPV systems. By an affine LPV system we mean an LPV system whose matrices are affine functions of the scheduling parameter. In this paper we characterize those input-output behaviors which exactly correspond to affine LPV systems. In addition, we characterize minimal affine LPV systems which realize a given input-output behavior. Furthermore, we explain the relationship between Markov-parameters, Hankel-matrices, existence of an affine LPV realization and minimality. The results are derived by reducing the problem to the realization problem for linear switched systems. In this way, as a secondary contribution, we formally demonstrate the close relationship between LPV systems and linear switched systems. In addition we show that an input-output map has a realization by an affine LPV system if and only if it satisfies certain types of input-output equations.

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