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Compositional Analysis of Hybrid Systems Defined Over Finite Alphabets

机译:有限字母定义的混合系统的成分分析

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We consider the stability and the input-output analysis problems of a class of large-scale hybrid systems composed of continuous dynamics coupled with discrete dynamics defined over finite alphabets, e.g., deterministic finite state machines (DFSMs). This class of hybrid systems can be used to model physical systems controlled by software. For such classes of systems, we use a method based on dissipativity theory for compositional analysis that allows us to study stability, passivity and input-output norms. We show that the certificates of the method based on dissipativity theory can be computed by solving a set of semi-definite programs. Nonetheless, the formulation based on semi-definite programs become computationally intractable for relatively large number of discrete and continuous states. We demonstrate that, for systems with large number of states consisting of an interconnection of smaller hybrid systems, accelerated alternating method of multipliers can be used to carry out the computations in a scalable and distributed manner. The proposed methodology is illustrated by an example of a system with 60 continuous states and 18 discrete states.
机译:我们考虑一类大型混合系统的稳定性和输入输出分析问题,该系统由连续动态与有限字母定义的离散动态(例如确定性有限状态机(DFSM))组成。此类混合系统可用于对软件控制的物理系统进行建模。对于此类系统,我们使用基于耗散理论的方法进行成分分析,从而可以研究稳定性,无源性和输入输出范数。我们表明,可以通过求解一组半定程序来计算基于耗散理论的方法的证书。尽管如此,对于相对大量的离散状态和连续状态,基于半确定程序的公式在计算上变得棘手。我们证明,对于具有大量状态的系统,这些状态由较小的混合系统的互连组成,可以使用乘法器的加速交替方法以可扩展和分布式的方式进行计算。通过具有60个连续状态和18个离散状态的系统示例说明了所提出的方法。

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