Road-Adaptive Nonlinear Design of Active Suspensions
نویسنده
چکیده
Recently we proposed a novel nonlinear control design for active suspensions, which features a lter whose band-width is a nonlinear function of suspension travel; this lter results in an improved tradeoo between ride comfort and rattlespace usage. In this paper we augment this controller with a new road-adaptive algorithm which continuously monitors suspension travel and adjusts on-line the shape of the lter nonlinearity in response to diier-ent road prooles. This adaptive design realizes the true potential of active suspensions, which is their ability to yield better performance over a much wider range of road surfaces than passive suspensions.
منابع مشابه
Road adaptive active suspension design using linear parameter-varying gain-scheduling
This paper presents a novel approach to the design of road adaptive active suspensions via a combination of linear parameter-varying control and nonlinear backstepping techniques. Two levels of adaptation are considered: the lower level control design shapes the nonlinear characteristics of the vehicle suspension as a function road conditions, while the higher level design involves adaptive swi...
متن کاملModular Adaptive Design for Active Suspensions
Active suspension designs rely on knowledge of system parameters such as vehicle mass to achieve their objectives of improved passenger comfort and road handling. Recently, we proposed a novel nonlinear design methodology for active suspensions, which uses a nonlinear control objective to explicitly incorporate rattlespace travel limits and prevent the suspension from hitting them. We have also...
متن کاملAnIntervalType-2FuzzyLogicController forQuarter VehicleActive Suspensions
A novel adaptive fuzzy logic controller (AFC) based on interval type-2 fuzzy is proposed for vehicle non-linear active suspension systems. The adaptive strategy elicited from Least Means Squares optimal algorithm (LMS) is adopted to self-tune lower bounds and upper bounds of interval type-2 fuzzy membership functions (IMFs). The IMFs are utilized in the AFC design to deal with not only non-line...
متن کاملDesign of a Constrained Nonlinear Controller using Firefly Algorithm for Active Suspension System
Active vehicle suspension system is designed to increase the ride comfort and road holding of vehicles. Due to limitations in the external force produced by actuator, the design problem encounters the constraint on the control input. In this paper, a novel nonlinear controller with the input constraint is designed for the active suspension system. In the proposed method, at first, a constrained...
متن کاملAdaptive Nonlinear Control in Active Suspensions 1
We study the sensitivity of a recently developed nonlinear control scheme with respect to variations in the parameters of the active suspension. Based on comparative simulation results, we conclude that the parameters of the hydraulic actuator dynamics are the ones to which closed-loop system performance is most sensitive. In fact, it is enough to estimate only one parameter in order to guarant...
متن کامل