Modelling and simulation of electro-pneumatic parking brake system for real time estimation of pressure inside parking brake chamber.

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Examensarbete för masterexamen
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2022
Författare
Soudagar, Irfan Ahmed Khan
Tota, Pranay Damodhar
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As a master thesis project, this research was conducted out at Scania CV AB’s Brake Functions Department. This project is focused on the development of a model-based pressure estimator for electro-pneumatic parking brake chambers. The Electro-pneumatic Parking Brake System (EPB), which is now along with the Electronic Brake System (EBS), has a distinct pneumatic circuit dedicated entirely to the parking brake application; conse quently, knowing the pressure inside the parking brake chamber is crucial if the parking brakes are to be engaged as backup brakes or autonomous stopping. The thesis paper is concerned with the development of a mathematical model of an electro pneumatic parking brake system based on the physical layout of the brake system. First two chapters of the report deals with the introduction and background of brake systems and it’s components. Chapter 3 & 4 of the report deals with the methodology, approach, theory and the development of simulink model for each of the components present in the brake circuit. The developed model take the inputs from the EPB module and further estimates the pressure considering the physical parameters of all the components on the brake system. Final part of the report deals with the implementation of model in real-time test scenario and comparison with the measured pressure followed by the conclusion and future work.
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Pressure Estimation, Electro-Pneumatic Braking System, Simulink, Pnuematic Actuators, Modelling and Simulation, Commercial Vehicle Brakes
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