Title: An evaluation of LQR and fuzzy logic controllers for active suspension using half car model

Authors: Faried Hasbullah, Waleed F. Faris

Addresses: Department of Mechatronics Engineering, College of Engineering, International Islamic University Malaysia (IIUM), Jalan Gombak, Gombak, 53100, Malaysia. ' Department of Mechanical and Department of Mechatronics Engineering, College of Engineering, International Islamic University Malaysia (IIUM), Jalan Gombak, Gombak, 53100, Malaysia

Abstract: The application of the linear quadratic regulator (LQR) and fuzzy logic controller (FLC) in the field of active vibration isolation for a vehicle suspension system is presented to overcome the limitation of passive suspension system and the performances of the two active controllers are compared with the passive system. Results show that the performance of the LQR controller is better than the FLC at the expense of control force. The performances of both active controllers are better than the passive system in terms of settling time.

Keywords: half-car models; passive suspension systems; active control systems; LQR controller; fuzzy logic; fuzzy control; linear quadratic regulator; fuzzy logic controller; FLC; vehicle suspension; vibration isolation; vehicle vibration.

DOI: 10.1504/IJVNV.2010.036686

International Journal of Vehicle Noise and Vibration, 2010 Vol.6 No.2/3/4, pp.200 - 214

Available online: 05 Nov 2010 *

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