Dual objective active suspension system based on a novel nonlinear disturbance compensator

Abstract

This paper proposes an active suspension system to fulfil the dual objective of improving ride comfort while trying to keep the suspension deflection within the limits of the rattle space. The scheme is based on a novel nonlinear disturbance compensator which employs a nonlinear function of the suspension deflection. The scheme is analysed and validated by simulation and experimentation on a laboratory setup. The performance is compared with a passive suspension system for a variety of road profiles. ARTICLE HISTORY

Design of Active Fractional PID Controller Based on Whale's Optimization Algorithm for Stabilizing a Quarter Vehicle Suspension System

“…Deshpande et al [16] proposed an active suspension system that satisfies the objectives of both an improved comfort in riding and, at the same time, keeping the deflection in suspension system bounded by the boundary of the rattle space. The proposed approach relied on a new nonlinear disturbance compensator for the suspension deflection.…”

Adaptive backstepping‐based control design for uncertain nonlinear active suspension system with input delay

“…13,14 However, it would be much more practical and consistent with the actual situation if the spring and damper coefficients are taken as a nonlinear term, which is helpful to design an appropriate controller. Consequently, in the field of active suspension control, many researchers 15,16 have brought the nonlinear model of the spring and damper into the nonlinear active suspension model during the controller development process, in which the piecewise nonlinear spring force and the linear damper force are popularly used in the controller design for active suspension system. 17,18 In nonlinear active suspension system, time delays are often encountered in the controlled channel, particularly in the digital controller as it carries out some calculations associated with the complex control law.…”

Design and Implementation of H∞ Miscellaneous Information Feedback Control for Vehicle Suspension System

“…Since an active suspension can generate a preset control force, it can achieve an ideal control effect. An active controller directly determines the vibration-absorption performance of an active suspension system; thus, it has received much attention [1][2][3][4][5][6][7][8][9][10][11][12][13].…”

“…e common control methods include robust H ∞ control [2,3], sliding mode control [5][6][7][8][9][10][11], adaptive control [14,15], and fuzzy control [16,17]. Among these, the H ∞ control is regarded as the most powerful design alternative, and many significant research results have been obtained [18][19][20][21][22][23].…”