The objetive 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.


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    Title :

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


    Additional title:

    Aktives Federungssystem, das mittels neuronalem Netzwerk mit Vorwärtsstrategie gesteuert wird, unter Verwendung eines frequenz- und zeitgeformten Leistungsindex. Teil 1: Steuerungslogik und Leistung


    Contributors:
    Yoon, Y.S. (author) / Kim, H. (author)

    Published in:

    Publication date :

    1996


    Size :

    19 Seiten, 15 Bilder, 2 Tabellen, 16 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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

    Yoon,Y.S. / Kim,H. / Korean Advanced Inst.of Science and Technol.,KR | Automotive engineering | 1996



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    Kim, H. / Yoon, Y.-S. / Society of Automotive Engineers | British Library Conference Proceedings | 1993


    Neuro Controlled Active Suspension with Preview for Ride Comfort

    Kim, Hyuk / Yoon, Yong-San | SAE Technical Papers | 1993


    Development of feedforward control algorithms for active suspension

    Inagaki,S. / Inoue,H. / Sato,S. et al. | Automotive engineering | 1992