✦ LIBER ✦

Bond graphs in control: Physical state variables and observers

✍ Scribed by Dean Karnopp

Publisher: Elsevier Science
Year: 1979
Tongue: English
Weight: 853 KB
Volume: 308
Category: Article
ISSN: 0016-0032
DOI: 10.1016/0016-0032(79)90114-5

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✦ Synopsis

Bond graph modeling techniques yield state equations intimately related to energy storage in physical systems. The easy physical interpretation of the state variables from a bond graph model aids in the realization of modem automatic control schemes involving state variable feedback. When it is inconvenient or impossible to measure certain state variables, the useful device of an observer may be used to estimate the missing state variables. It is shown that the same bond graph used to model the system can be used to derive a complete or reduced order observer. The partial observers use derivative causality in a new way and in some cases, the effects of completely unknown disturbances may be accounted for.

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