Design and simulation of an ABS for an integrated active safety system for road vehicles

A design methodology for an anti-lock braking system (ABS) controller for four-wheeled road vehicles is presented. In the study, a flexible approach was adopted considering integration with an integrated active safety system control structure. In the hierarchical control strategy proposed for the ABS controller, a high-level controller, through vehicle longitudinal acceleration-based estimation, determines reference wheel slip values, and a low-level controller attempts to track these reference slip signals by modulating braking torques. Two control methods were investigated for the design of the low-level controller: fuzzy logic control and PID control.


Design and simulation of an integrated active yaw control system for road vehicles
Tekin, Goekhan; Ünlüsoy, Yavuz Samim (2010-01-01)
In this paper, design methodology and simulation results of an active yaw control system For road vehicles arc presented. The main objectives of the yaw control system arc to estimate the desired yaw behaviour of file vehicle according to the demand of file driver by means of a two degree-of-freedom vehicle model and track this desired yaw rate while considering vehicle steerability parameters. Based on vehicle yaw rate error and vehicle sideslip angle, the controller system applies brake torques to individ...
Design of an Optimal Sliding Mode Controller for an Active Suspension Considering Non-linear Quarter Car Model
Sadeghi-Khaneghah, Farshid; Bayar, Kerem; Department of Mechanical Engineering (2020-7-26)
A non-linear quarter car model is used in this study for developing a control algorithmfor an active suspension system. The control method used, is optimal sliding modecontrol, along with feedback linearization technique for compensating the non-linearaspects of the plant. In addition to the work in recent literature that applies thesecontrol methods, estimation of the static suspension deflection, i.e., vehicle sprungmass is performed. Through simulation results, it is shown that correct information ofv...
A fuzzy logic controlled Anti-lock Braking System (ABS) for improved braking performance and directional stability
Yazıcıoğlu, Yiğit; Ünlüsoy, Yavuz Samim (2008-01-01)
A simple and effective fuzzy logic controller is designed for an Anti-Lock Braking System (ABS) to improve the braking performance and directional stability of an automobile during braking and steering-braking manoeuvres on uniform and nonuniform (mu-Split) friction Surfaces. The system consists of two controllers working in tandem. The first controller works oil the longitudinal slip, and the second controller is responsible for the side-slip motion control of the vehicle. The fuzzy logic controller is imp...
Analysis and Design of Passive and Active Interconnected Hydro Pneumatic Suspension Systems in Roll Plane
Sağlam, Ferhat; Ünlüsoy, Yavuz Samim (2015-05-19)
In this study, analysis and design of a half car model in roll plane with passive and active unconnected and interconnected Hydro-Pneumatic (HP) suspension systems are made. An interconnection configuration with a connection between the piston side oil volume and rod side oil volume of the right and left suspensions, respectively, is considered. The performance of the active unconnected HP and interconnected HP suspension systems are compared in terms of ride comfort and handling. Nonlinear mathematical mod...
Development of a control strategy for road vehicles with semi-active suspensions using a full vehicle ride model
Erdoğan, Zeynep; Ünlüsoy, Yavuz Samim; Department of Mechanical Engineering (2009)
The main motivation of this study is the design of a control strategy for semi-active vehicle suspension systems to improve ride comfort for road vehicles. In order to achieve this objective, firstly the damping characteristics of Magnetorheological dampers will be reviewed. Then an appropriate semi-active control strategy manipulating the inputs of the dampers to create suitable damping forces will be designed. Linear Quadratic Regulator (LQR) control strategy is the primary focus area on semi-active contr...
Citation Formats
M. Sahin and Y. S. Ünlüsoy, “Design and simulation of an ABS for an integrated active safety system for road vehicles,” INTERNATIONAL JOURNAL OF VEHICLE DESIGN, pp. 64–81, 2010, Accessed: 00, 2020. [Online]. Available: