Feedforward neuro-controlled active suspension using frequency and time-mixed shape performance index. Part 1 : Control logic and performance

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The objective of this study is to develop a control law of the active suspension for the safety and ride quality improvement using a frequency and time-mixed shape performance index with speed and road-adaptive preview logic. The incorporation of a mixed shape performance index allows one to emphasize or de-emphasize certain variables over specific bands of frequencies. The criteria recommended by ISO2631 and BS6841 provide the frequency weighting curves for human body vibration in relation to ride comfort. A unified strategy of finite optimal feedforward control is developed both for a haversine bump and general highway. In the course of deriving the feedforward control logic, we used the theorem that approximate control solution exists and becomes arbitrarily close to the optimal control solution for a sufficiently large preview time. Through an eight degrees of freedom Linear ride model, we show that preview information and complex type performance index can improve the ride quality of the vehicle.
Publisher
Inderscience Enterprises Ltd.
Issue Date
1996
Language
English
Article Type
Article
Citation

INTERNATIONAL JOURNAL OF VEHICLE DESIGN, v.17, no.2, pp.163 - 181

ISSN
0143-3369
URI
http://hdl.handle.net/10203/76139
Appears in Collection
ME-Journal Papers(저널논문)
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