An assume-guarantee reasoning for hierarchical coordination of discrete event systems

A.E.C. da Cunha, J. Cury, B. Krogh
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引用次数: 23

Abstract

The construction of a consistent abstraction plays a central role in the hierarchical control of discrete event systems. When constructing a consistent abstraction of a composed system it is first necessary to build the entire system, whose state space grows exponentially with the number of system components. Therefore it is desirable to build this consistent abstraction directly from the composition of consistent abstractions of the subsystems. But the composition of consistent abstractions of the subsystems is not necessarily a consistent abstraction of the composed system. This paper presents a method based on an assume-guarantee reasoning to build a consistent abstraction of the composed system by the composition of modified consistent abstractions of the subsystems. The method is then applied for a case of an Cooperative Adaptive Cruise Controller (CACC) system for an automobile.
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离散事件系统层次协调的假设-保证推理
在离散事件系统的分层控制中,一致抽象的构建起着核心作用。当构建一个组合系统的一致抽象时,首先需要构建整个系统,其状态空间随着系统组件的数量呈指数增长。因此,直接从子系统的一致抽象的组合中构建这个一致的抽象是可取的。但是,子系统的一致抽象的组合并不一定是组合系统的一致抽象。本文提出了一种基于假设-保证推理的方法,通过修改各子系统的一致抽象组成组合系统的一致抽象。并将该方法应用于汽车协同自适应巡航控制器(CACC)系统的实例。
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