Abstract
In order to further improve the braking performance of the nonlinear antilock braking system (ABS), an improved global sliding mode control scheme is presented. First, a nonlinear global sliding mode surface is designed. The method can eliminate the reaching phase compared with conventional linear sliding mode surface, and guarantee the system robustness during the whole control process. Then, a novel control law is proposed to satisfy the sliding mode reaching condition, and the theoretical proof is given. Simulation results demonstrate that the proposed global sliding mode control scheme enables the wheel slip-ratio to converge to optimal value quickly with the small oscillation, and has relatively short braking distance and braking time, which is very suitable to prevent the wheel from being locked during braking. The proposed global sliding mode control scheme is verified by joint simulation using MATLAB and CarSim, and shows good braking performance when the car is driving under extreme road conditions, which indicates the effectiveness of the proposed sliding mode control scheme.
Highlights
The antilock braking system(ABS) as an essential component can improve safety and reliability of vehicle, have been installed for some decades
It ensures that the initial state of the system is located on it, the system is constrained to the sliding surface by a sliding mode controller, so the sliding mode invariably exists, and robust performance is ensured throughout an entire response
The results are consistent with the MATLAB simulation results given in Section IV, which proves the feasibility of designed controller
Summary
The antilock braking system(ABS) as an essential component can improve safety and reliability of vehicle, have been installed for some decades. The main goal is to design a controller and ensure the slip-ratio to maintain the desired value, which will improve the wheel tractive force and obtain an optimal later force from the road surface In this way, the braking distance and time are further reduced, and the stability of vehicle is improved. In [30], a robust ABS method based on global sliding mode control is proposed, but its braking performance and control effect are not ideal. They ignore some external interference factors in the process of designing the controller. Simulation results show the proposed global sliding mode control method can get well braking performance under wet asphalt road condition and make the wheel slipratio maintained at the desired slip-ratio.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
