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Compositional Analysis of Hybrid Systems Defined Over Finite Alphabets

机译:在有限字母表中定义的混合系统的组成分析

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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:我们考虑一类由连续动态组成的一类大型混合系统的稳定性和输入 - 输出分析问题,其与在有限字母表上定义的离散动态组成,例如确定性有限状态机(DFSMS)。这类混合系统可用于模拟由软件控制的物理系统。对于这样的系统,我们使用基于耗散理论的方法进行组成分析,使我们能够研究稳定性,被动和输入 - 输出规范。我们表明,通过求解一组半确定程序,可以计算基于耗散理论的方法的证书。尽管如此,基于半确定程序的配方对于相对大量的离散和连续的状态来说变得计算地难以解决。我们证明,对于具有较小混合系统的互连组成的大量状态的系统,可以使用加速交替方法以可扩展和分布式方式执行计算。所提出的方法通过具有60个连续状态和18个离散状态的系统的示例来说明。

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