Title :
The research and application of fuzzy control in four-wheel-steering vehicle
Author :
Wang Shufeng ; zhang junyou
Author_Institution :
Sch. of Transp. & Vehicle Eng., Shandong Univ. of Technol., Zibo, China
Abstract :
In order to solve the problem of excessive understeer of four-wheel -steering vehicle with zero mass-center side-slip angle and proportional control at high speed, using fuzzy logical control method, adding direct yaw moment control of four wheel steering to solve this question. a two DOF four-wheel-steering vehicle model with integrated control of steering angle and yaw moment was established. The Four wheel steering system (4WS) which takes yaw rate and side-slip angle as the control object was realized with fuzzy control method. The fuzzy controller was designed with Fuzzy Logic Toolbox of MATLAB, and dynamic simulation has been carried out with SIMULINK. The result showed that fuzzy logic control method can improve vehicle handling stability effectively and doesn´t increase the driver´s driving burden at the same time.
Keywords :
fuzzy control; mechanical stability; proportional control; steering systems; vehicle dynamics; velocity control; wheels; 4WS; DOF four-wheel-steering vehicle model; MATLAB; SIMULINK; direct yaw moment control; dynamic simulation; excessive understeer; four wheel steering system; fuzzy logic control; fuzzy logic toolbox; high speed control; proportional control; steering angle; vehicle handling stability; yaw rate; zero mass-center side-slip angle; Fuzzy logic; Mathematical model; Niobium; Stability analysis; Steady-state; Vehicles; Wheels; Four wheel steering; Fuzzy control; Handling stability; Yaw moment control;
Conference_Titel :
Fuzzy Systems and Knowledge Discovery (FSKD), 2010 Seventh International Conference on
Conference_Location :
Yantai, Shandong
Print_ISBN :
978-1-4244-5931-5
DOI :
10.1109/FSKD.2010.5569185
