The purpose of this paper is to present a new robust strategy in controlling the active suspension system. The strategy utilized the proportional-integral sliding mode control scheme. A quarter-car model is used in the study and the performance of the controller is compared to the linear quadratic regulator and with the existing passive suspension system. A simulation study is performed to prov...

In a previous paper (Hirose et al., 1962) it was reported that guinea pigs highly immunized against a bacterial suspension of Corynebacterium diphtheriae resisted to a challenge by the conjunctival method (Murata et al., 1959) with a toxinogenic virulent strain without even traces of antitoxic immunity, while a passive transfer of the immunity failed. The reason for this failure may have been d...

In this paper we present two multi-objective optimization techniques for the design of a passive suspension for a quarter-car vehicle model. These techniques are based on meta-heuristic optimization and bilinear matrix inequalities (BMI) respectively. The use of multi-objective optimization is motivated by the need to optimize simultaneously various performance measures when designing a vehicle...

The suspension system needs both an active mode and passive when the emergency rescue vehicle is running on a complex road. Therefore, active–passive composite actuator (APCSA) designed in this paper. Firstly, combined with computational fluid dynamics theory dynamic mesh technology, complete domain of original (PSA) simulated. Secondly, accordance simulation results consideration working condi...

The value of a self-tuning adaptive semi-active control scheme for automotive suspension systems is discussed in this paper. current vehicle system uses fixed-coeffcient springs and dampers. ability to provide good road handling improve passenger comfort usually valued. Passive allows you choose between these two options. Semi-Active suspension(SAS), on the other hand, can both by manipulating ...

-The performance of fuzzy logic (FLC) and PID controllers optimized by particle swarm optimization (PSO) for semi-active suspension system using magneto-rheological (MR) damper are investigated. MR damper is an intelligent damper filled with particle magnetic polarizable and suspended into a liquid form. The Bouc-Wen model of MR damper is used to determine the required damping force based on fo...

YONGCHAO ZHANG, GUOGUANG ZHANG, FAN YU* State Key Laboratory Mechanical System & Vibration, School of Mechanical Engineering Shanghai Jiao Tong University 800 Dongchuan RD. Minhang District, Shanghai CHINA [email protected] Abstract: This paper presents the modeling and μ synthesis for a vehicle active suspension system with a motor actuator, and analyses the performances of the active suspensi...

and damper do not provide energy to the suspension system and control only the motion of the car body and wheel by limiting the suspension velocity according to the rate determined by the designer, T~ the above problem, active suspension systems have been proposed by various [3,4,51. Active suspension systems dynamically respond to changes in the road profile because of their ability to supply ...

This study presents evaluation of effect of in-wheel electric motors mass on the performance of passive and active suspension systems using matlab. Linear Quadratic Regulator (LQR) is one of more common control methods which is used to complete the design of the active suspension system in this paper .Unsprung mass is one of the important parameters which effects on road holding and ride comfor...