A hybrid clustering based fuzzy structure for vibration control – Part 2: An application to semi-active vehicle seat-suspension system. (May 2015)

• Record Type: Journal Article
• Authors: Nguyen, Sy Dzung; Nguyen, Quoc Hung; Choi, Seung-Bok
• Is Part Of: Mechanical systems and signal processing. Volume 56/57(2015)
• Page Start: 288
• Page End: 301
• Publication Date: 2015-05
• Subjects: Semi-active seat suspension -- Neuro-fuzzy controller -- Magnetorheological (MR) damper -- Fuzzy logic control -- Inverse model of MR damper; Structural dynamics -- Periodicals; Vibration -- Periodicals; Constructions -- Dynamique -- Périodiques; Vibration -- Périodiques; Structural dynamics; Vibration; Periodicals; 621
• DOI: 10.1016/j.ymssp.2014.10.019
• Languages: English
• ISSNs: 0888-3270

Abstract

Abstract: This work presents a novel neuro-fuzzy controller (NFC) for car-driver׳s seat-suspension system featuring magnetorheological (MR) dampers. The NFC is built based on the algorithm for building adaptive neuro-fuzzy inference systems (ANFISs) named B-ANFIS, which has been developed in Part 1, and fuzzy logic inference systems (FISs). In order to create the NFC, the following steps are performed. Firstly, a control strategy based on a ride-comfort-oriented tendency (RCOT) is established. Subsequently, optimal FISs are built based on a genetic algorithm (GA) to estimate the desired damping force that satisfies the RCOT corresponding to the road status at each time. The B-ANFIS is then used to build ANFISs for inverse dynamic models of the suspension system (I-ANFIS). Based on the FISs, the desired force values are calculated according to the status of road at each time. The corresponding exciting current value to be applied to the MR damper is then determined by the I-ANFIS. In order to validate the effectiveness of the developed neuro-fuzzy controller, control performances of the seat-suspension systems featuring MR dampers are evaluated under different road conditions. In addition, a comparative work between conventional skyhook controller and the proposed NFC is undertaken in order to demonstrate superior control performances of the proposed methodology. Highlights: We propose a novel neuro-fuzzy controller (NFC) for vehicle suspension system featuring magnetorheological dampers. The NFC is built based on the adaptive neuro-fuzzy inference system. The control strategy is based on the ride-comfort-oriented tendency. The desired force values are calculated according to the status of road at each time. It is shown that both vertical acceleration and displacement at driver׳s seat are significantly reduced utilizing the proposed controller compared with conventional skyhook controller.