LPV feedforward control of semi-active suspensions for improved roll stability

This work augments an existing LPV feedback controller by a new LPV feedforward filter to improve the stability of a vehicle subject to driver-induced roll disturbances. In particular, the proposed LPV feedforward filter is designed by a Full-Information control approach and uses the saturation indi...

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Bibliographic Details
Published inControl engineering practice Vol. 78; pp. 1 - 11
Main Authors Fleps-Dezasse, Michael, Bünte, Tilman, Svaricek, Ferdinand, Brembeck, Jonathan
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.09.2018
Subjects
Actuator constraints
Feedforward control
Linear-parameter varying control
Suspension control
Vehicle dynamics
Feedforward control
Suspension control
Actuator constraints
Linear-parameter varying control
Vehicle dynamics
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ISSN0967-0661
1873-6939
DOI10.1016/j.conengprac.2018.06.007

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Summary:This work augments an existing LPV feedback controller by a new LPV feedforward filter to improve the stability of a vehicle subject to driver-induced roll disturbances. In particular, the proposed LPV feedforward filter is designed by a Full-Information control approach and uses the saturation indicator concept to consider the restrictive state-dependent force constraints of semi-active dampers. Hence, in the event of saturation, the feedforward filter reduces its contribution to the control signal. The roll stability improvement due to the LPV feedforward filter is demonstrated by lane change experiments. •Full-Information design of an LPV feedforward filter.•LPV control design using saturation indicators.•Feedforward control of semi-active suspensions to improve vehicle roll stability.•Experimental validation of the LPV feedforward filter.
ISSN:0967-0661
1873-6939
DOI:10.1016/j.conengprac.2018.06.007