Abstract:
Optimal control techniques have been widely applied to the control of active suspensions. However, most of these applications did not consider the nonlinear effects exist...Show MoreMetadata
Abstract:
Optimal control techniques have been widely applied to the control of active suspensions. However, most of these applications did not consider the nonlinear effects existing in real suspension systems. In this paper, a constrained nonlinear quarter-car active suspension is simplified and modeled as a piecewise affine (PWA) system where the suspension elements may collide with bump stops or the tire may leave the ground. A hybrid MPC controller is first designed based on this model. The PWA system is then augmented in order to capture the previewed road information to further improve the performance. The resulting hybrid MPC controller is compared to a linear MPC design and a LQ-based controller in simulation. The hybrid MPC designs are shown to achieve better performances in terms of ride and road handling qualities over a large road disturbance.
Published in: 2016 American Control Conference (ACC)
Date of Conference: 06-08 July 2016
Date Added to IEEE Xplore: 01 August 2016
ISBN Information:
Electronic ISSN: 2378-5861