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Nonlinear controller design for semi–active suspension system using a prediction approach

Credit to Download: 1 | Page Numbers 8 | Abstract Views: 996
Year: 2012
COI code: ISAV02_220
Paper Language: English

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Authors Nonlinear controller design for semi–active suspension system using a prediction approach

Bahman Abdi - Research laboratory of vibration and mechatronic, Mechanical Engineering Department, Sahand University of Technolo
Mehdi Mirzaei -
Sajjad Aghasizade -

Abstract:

Magneto-rheological (MR) dampers are semi–active devices in vehicle suspension systems that pro-duce controllable forces dependent on the input current to the damper as well as the relative velocity of the sprung mass. In this paper, by the response prediction of nonlinear quarter–car model which in-cludes a nonlinear MR damper dynamics, a new optimal tracking controller is analytically designed for the semi–active suspension system. In order to develop a more accurate control law, a realistic nonlinear model of the spring force is also employed in the design model. In the proposed scheme, the control input is the input current to the MR damper and is determined by minimizing a pointwise per-formance index defined as a weighted combination of ride quality and control energy. Optimal prop-erty of the control law provides the possibility of limiting the input current to the MR damper, as the control input, to the physically admissible range. The performed analysis and the simulation results indicate that the proposed non–linear controller can improve the vehicle ride comfort using the re-duced input current to the MR damper without deteriorating the handling performance.

Keywords:

Semi–active suspension; nonlinear optimal control; MR damper; Prediction

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COI code: ISAV02_220

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Abdi, Bahman; Mehdi Mirzaei & Sajjad Aghasizade, 2012, Nonlinear controller design for semi–active suspension system using a prediction approach, 2nd International Conference on Acoustics and Vibration, تهران, دانشگاه صنعتي شريف, https://www.civilica.com/Paper-ISAV02-ISAV02_220.htmlInside the text, wherever referred to or an achievement of this article is mentioned, after mentioning the article, inside the parental, the following specifications are written.
First Time: (Abdi, Bahman; Mehdi Mirzaei & Sajjad Aghasizade, 2012)
Second and more: (Abdi; Mirzaei & Aghasizade, 2012)
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