Why Event Observation: Observability Revisited

Authors:
Changwei Cao;Feng Lin;Zheng-Hui Lin
Affiliations:
Delco Electronics Corporation, Kokomo, IN 46904;Department of Electrical and Computer Engineering, Wayne State University, Detroit, MI 48202;Institute of VLSI, Shanghai Jiao Tong University, Shanghai 200030, China
Venue:
Discrete Event Dynamic Systems
Year:
1997

Citing 6
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Abstract

In this paper, we revisit observability defined in Linand Wonham (1988a). We show that although the original definitionis intended for event observation with projection, its significancegoes beyond its original intent. Specifically, we show that (1)supervisory control with state observation can be studied interms of event observation; (2) supervisory control problemswith event mask can be converted to problems with event projection;and (3) nondeterminism is closely related to unobservability.