Smart dampers-based vibration control – Part 2: Fractional-order sliding control for vehicle suspension system

A two-degree-of-freedom nonlinear vibration system of a quarter vehicle suspension system is studied by using the feedback control method considered the fractional-order derivative damping. The nonlinear dynamic model of two-degree-of-freedom vehicle suspension system is built and linear velocity and displacement controllers are used to control the nonlinear vibration of the vehicle suspension system. A case of the 1:1 internal resonance is considered. The amplitude–frequency response is obtained with the multiscale method. The asymptotic stability conditions of the nonlinear system can be gotten by using the Routh–Hurwitz criterion and the ranges of control parameters are gained in the condition of stable solutions to the system. The simulation results show that the feedback control can effectively reduce the amplitude of primary resonance, weaken or even eliminate the nonlinear vibration characteristics of the suspension system. Fractional orders have an impact on control performance, which should be considered in the control problem. The study will provide a theoretical basis and reference for the optimal design of the vehicle suspension system.

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A New Fuzzy Sliding Mode Controller with a Disturbance Estimator for Robust Vibration Control of a Semi-Active Vehicle Suspension System

Applied Sciences ◽

10.3390/app7101053 ◽

2017 ◽

Vol 7 (10) ◽

pp. 1053 ◽

Cited By ~ 9

Author(s):

Byung-Keun Song ◽

Jin-Hee An ◽

Seung-Bok Choi

Keyword(s):

Vibration Control ◽

Sliding Mode ◽

Suspension System ◽

Vehicle Suspension ◽

Sliding Mode Controller ◽

Fuzzy Sliding Mode ◽

Vehicle Suspension System ◽

Active Vehicle Suspension System ◽

Disturbance Estimator

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Optimized Fractional-Order Proportional Integral Derivative Controller for Active Vehicle Suspension System Performance Enhancement

International Journal of Vehicle Structures and Systems ◽

10.4273/ijvss.10.4.15 ◽

2018 ◽

Vol 10 (4) ◽

Author(s):

A.S. Emam ◽

H. Metered ◽

A.M. Abdel Ghany

Keyword(s):

Fractional Order ◽

Performance Enhancement ◽

Ride Comfort ◽

Active Suspension ◽

Suspension System ◽

Vehicle Suspension ◽

Vehicle Stability ◽

Proportional Integral Derivative ◽

Proportional Integral ◽

Vehicle Suspension System

In this paper, an optimal Fractional Order Proportional Integral Derivative (FOPID) controller is applied in vehicle active suspension system to improve the ride comfort and vehicle stability without consideration of the actuator. The optimal values of the five gains of FOPID controller to minimize the objective function are tuned using a Multi-Objective Genetic Algorithm (MOGA). A half vehicle suspension system is modelled mathematically as 6 degrees-of-freedom mechanical system and then simulated using Matlab/Simulink software. The performance of the active suspension with FOPID controller is compared with passive suspension system under bump road excitation to show the efficiency of the proposed controller. The simulation results show that the active suspension system using the FOPID controller can offer a significant enhancement of ride comfort and vehicle stability.

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