Drive-by-wire air pressure braking system controller and control method thereof

Abstract

The invention discloses a drive-by-wire air pressure braking system controller and a control method thereof. The controller is composed of a main control chip unit, a driver braking signal collectionunit, a pressure signal collection unit, an ABS solenoid valve driving unit, a front bridge module driving unit and a rear bridge module driving unit; the main control chip unit is internally providedwith a single-chip microcomputer, the driver braking signal collection unit and the pressure signal collection unit are connected with a signal input end of the single-chip microcomputer separately to collect vehicle signals, and the ABS solenoid valve driving unit, the front bridge module driving unit and the rear bridge module driving unit are connected with a signal output end of the single-chip microcompute separately to output braking control signals. According to the control method based on the controller, a double-logic threshold method is adopted for conducting pressure increase and decrease control in sections. The controller highly integrates a signal collection function with a control circuit, the interior of the controller is processed by circuit optimization to improve the anti-interference performance and ensure the control accuracy and stability of a braking system, and by combining the control method, fast pressure generation and accurate pressure control of the systemcan be achieved.

Description

technical field [0001] The invention belongs to the field of automobile brake system controllers, and more particularly relates to a wire-controlled air pressure brake system controller and a control strategy thereof. Background technique [0002] Automobile braking system is an important part of automobile chassis, and the performance of braking system has a great influence on driving safety, handling stability and riding comfort. The function of the car braking system is to ensure that the car stops within a short distance of driving and maintains the stability of the braking. Due to the important role of the braking system in the driving of the vehicle, the design of the controller for the braking system of the vehicle is of great significance. [0003] At present, due to the large weight of commercial vehicles and the large demand for braking force during braking, the braking system of commercial vehicles mainly adopts the form of pneumatic braking. Due to the shortcom...

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Problems solved by technology

[0005] Aiming at the defects of the above-mentioned existing controllers of the air-by-wire pneumatic brake system, such as the slow pressure build-up time of the brake system and low control precision, the present invention provides a controller for the air-by-wire air brake system and its control strategy, so as to achieve the Precise Control of Air Braking System

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