Preview control of active suspension for railway vehicles (combining control of preview and H sub(INF) feedback)

Active suspensions have been considered for improving the ride quality of railway vehicles. Recently various control methods have been proposed. In this paper preview control is studied. Preview control, a kind of feedforward control, has two disadvantages. (1) Preview control does not increase the...

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Bibliographic Details
Published inNihon Kikai Gakkai ronbunshū. C Vol. 61; no. 591; pp. 4339 - 4344
Main Authors Fujioka, Takehiko, Yamada, Haruo
Format Journal Article
LanguageJapanese
Published 01.01.1995
Subjects
Computer simulation
Control systems
Feedback control
Riding qualities
System stability
Vehicle suspensions
Vibration control
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Summary:Active suspensions have been considered for improving the ride quality of railway vehicles. Recently various control methods have been proposed. In this paper preview control is studied. Preview control, a kind of feedforward control, has two disadvantages. (1) Preview control does not increase the stability of a system. (2) Safety problem occurs from the practical point of view when it fails. In order to compensate the above disadvantages, a combination control by preview and H sub(INF) feedback is considered in this paper. Numerical simulations are performed for lateral vibration of railway vehicles. It is shown that preview control reduces the vibration with small control power and that H sub( infinity ) control (feedback control) reduces residual vibration even if errors exist in preview information. Furthermore, the effect of this control system is confirmed by experiments.
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ISSN:0387-5024