Authors: Abel Chernet; Gebremicheal Teame
Addresses: Department of Electromechanical Engineering, Addis Ababa Science and Technology University, Addis Ababa. Ethiopia ' Department of Electromechanical Engineering, Addis Ababa Science and Technology University, Addis Ababa. Ethiopia
Abstract: When vehicle speed increases, stable and powerful brake system is required to ensure the safety of the vehicle and passengers. For high speed braking of vehicle, contactless eddy current brake (ECB) is developed and applied to antilock brake system (ABS). An adaptive sliding mode controller for ABS using eddy current is presented with a sliding mode observer (SMO). Using vehicle acceleration, wheel speeds, and braking torque, the vehicle velocity estimated by SMO. To control the system based on wheel slip, half-car model is developed by considering uncertainty of the road slope and aerodynamic drag force. According to the controller, the vehicle ABS model is built with MATLAB Simulink. The response of controller is compared in terms of braking time and stopping distance. The results indicate proposed controller algorithm achieves minimum braking time and minimum stopping distance on selected roads.
Keywords: eddy current brake; ECB; antilock braking system; sliding mode observer; SMO; adaptive sliding mode control.
International Journal of Nonlinear Dynamics and Control, 2021 Vol.2 No.1, pp.66 - 96
Received: 04 Jan 2021
Accepted: 16 May 2021
Published online: 30 Jul 2021 *