A Study on the Semi-Active Suspension Systems Used for Motor Vehicles

Abstract

This work deals with a study on the semi-active suspension systems used for motor vehicles, with focus on the devices that control the suspension damping. Several representative types of semi-active devices are presented and then analyzed comparatively using a multicriteria method based on the FRISCO formula. Specific control techniques are then discussed, emphasizing the application field and their limitations. A novel control strategy is proposed with the aim to improve the dynamic behaviour of the vehicle. The mechatronic model of the semi-active suspension (which integrates mechanical and control components) was carried out and simulated in a virtual environment by using MBS (Multi-Body Systems) and DFC (Design for Control) software solutions, namely ADAMS and EASY5 of MSC Software.

Evaluation of Pipe Materials in Water System Networks Using the Theory of Advanced Multi-Criteria Analysis

“…The FRISCO formula was used to rank the criteria and assign a weight factor for each criterion because it is universally acknowledged as the best and most used for this type of analysis [116][117][118][119][120][121][122][123][124].…”

Research on semi-active suspension variable weight model predictive control under car-following scenario

“…With the rapid development of high-end assisted driving and autonomous driving, drivers turn on the adaptive cruise assisted driving function on the highway. The driving conditions of the own vehicle include constant speed, acceleration and braking conditions [1,2]. Under different working conditions, the impact on vehicle handling stability and ride comfort is different, and semi-active suspension with variable stiffness or damping can be used to improve it.…”

Dynamic Optimization of the Controller for the Active Suspension System of a Race Car

“…The suspension role is to protect the car against shock, vibration and harmful oscillations caused by road bumps. Current vehicles use the following types of suspensions: passive suspensions, which are made of elastic and dissipative elements such as springs and dampers (the dynamic behavior is given by the characteristics of these elements, and it cannot be changed during operation) [1][2][3]; semi-active suspensions, which are composed of elastic elements and controlled dampers (the dynamic behavior is changed by adjusting the viscosity coefficient, without introducing external forces into the system) [4][5][6][7][8][9]; active suspensions, which are composed of elastic and dissipative elements along with which there are actuation systems (the dynamic behavior is changed by the external forces introduced by the actuators) [10][11][12][13][14][15][16].…”