A new adaptive sliding mode control for Macpherson strut suspension system with magneto-rheological damper. (December 2016)

• Record Type: Journal Article
• Authors: Dutta, Saikat; Choi, Sang-Min; Choi, Seung-Bok
• Is Part Of: Journal of intelligent material systems and structures. Volume 27:Number 20(2016)
• Page Start: 2795
• Page End: 2809
• Publication Date: 2016-12
• Subjects: vehicle suspension -- Macpherson strut -- equivalent linearization -- magneto-rheological damper -- sliding mode control -- fuzzy adaptive control -- moving sliding surface; Smart materials -- Periodicals; Intelligent control systems -- Periodicals; Artificial intelligence -- Periodicals; Matériaux intelligents -- Périodiques; Commande intelligente -- Périodiques; Intelligence artificielle -- Périodiques; 620.11
• DOI: 10.1177/1045389X16641221
• Languages: English
• ISSNs: 1045-389X

Abstract

This work proposes a new adaptive sliding mode controller to enhance ride comfort and steering stability of automobile associated with a semi-active magneto-rheological damper. In this study, a Macpherson strut type suspension system which is widely used in light vehicles is considered. The dynamic model of the Macpherson strut with magneto-rheological damper is obtained and the governing equations are then formulated using kinematic properties of the suspension system following Lagrange's formulation. In the formulation of the model, both the rotation of the wheel assembly and the lateral stiffness of the tire are considered to represent the nonlinear characteristic of Macpherson type suspension system. Subsequently, in order to effectively reduce unwanted vibrations, a new adaptive sliding mode controller is designed by adopting moving sliding surface instead of conventional fixed sliding surface. In order to demonstrate the effectiveness of the proposed controller, a cylindrical magneto-rheological damper is designed and manufactured on the basis of practical application conditions such as required damping force. Then, ride comfort, suspension travel, and road handling are evaluated and some benefits of the proposed controller such as enhanced ride comfort are evaluated.