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Control of sideslip and yaw rate in 4-wheel steering car using partial decoupling and individual channel design

Vilaplana, M. and Leith, D.J. and Leithead, W.E. (2003) Control of sideslip and yaw rate in 4-wheel steering car using partial decoupling and individual channel design. In: UNSPECIFIED.

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    Abstract

    This paper presents a new steering control structure for cars equipped with 4-wheel steering. This control structure is based on a simplified linear model of the lateral dynamics of such cars and aims to decouple the control of sideslip from the control of yaw rate. The control design is based on a linear multivariable plant which incorporates the model of the lateral dynamics mentioned above and whose inputs are linear combinations of the front and rear steering angles. The plant also contains a cross-feedback element. The matrix transfer function of the resulting plant is upper-triangular (partially decoupled). The MIMO design problem can then be recast as two SISO design problems using channel decomposition according to the Individual Channel Design (ICD) paradigm. The proposed control structure has been applied to design sideslip and yaw rate controllers using a more accurate model of the lateral dynamics of 4-wheel steering cars. This model incorporates the tyre force dynamics and the steering actuators. Simulations are used to illustrate the performance and robustness of the designed controllers.

    Item type: Conference or Workshop Item (Paper)
    ID code: 38368
    Keywords: control, sideslip, yaw rate, 4-wheel steering, partial decoupling , individual channel design, Electrical engineering. Electronics Nuclear engineering
    Subjects: Technology > Electrical engineering. Electronics Nuclear engineering
    Department: Faculty of Engineering > Electronic and Electrical Engineering
    Related URLs:
      Depositing user: Pure Administrator
      Date Deposited: 09 Mar 2012 15:31
      Last modified: 07 Sep 2014 13:46
      URI: http://strathprints.strath.ac.uk/id/eprint/38368

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