Electronic drive-by-wire booster control system

Abstract

The invention discloses an electronic drive-by-wire booster control system which comprises an ECU module, a pedal travel sensor module, a motor module, a hydraulic adjusting module and a pressure sensor module, the ECU module comprises a main control MCU1, an auxiliary control MCU2, a CAN1 and a CAN2, and the motor module comprises a motor, a motor driving module and a motor rotation angle sensor module. The hydraulic adjusting module comprises a main cylinder, a power assisting module and an ESC module. According to the system, firstly, the braking deceleration requirement of a large-tonnage vehicle is met, independent pressurization can be independently achieved, and active pressurization can also be achieved through cooperation with an ESC module, secondly, three pressure sensors are arranged and distributed at oil outlets of a main cylinder and two branch pumps of the hydraulic adjusting module, the pressure of the main cylinder and the pressure of the branch pumps are collected, and the pressure of the main cylinder and the pressure of the branch pumps are calculated. Pressure is fed back in real time, the defects of a vehicle pressure model are effectively overcome, control lag is avoided, and the control precision is improved.

Description

technical field [0001] The invention relates to the technical field of electronic drive-by-wire booster control systems, in particular to an electronic drive-by-wire booster control system. Background technique [0002] On the one hand, the existing electronic power-by-wire system lacks a hydraulic auxiliary control module. When the vehicle body is heavy, especially when the full load is larger than the large tonnage, because it needs to meet the 200ms braking pressure of the large tonnage vehicle to reach the pressure building requirement of 10MPa, it is necessary to use a Larger brake calipers require fluid, and the existing electronic power assist system without hydraulic auxiliary modules cannot meet the pressure building requirements due to reasons such as limited pedal travel or insufficient motor efficiency, which affects the braking deceleration of the vehicle and leads to brake boosting Insufficient, on the other hand, there is no pressure closed-loop control for pr...

AI Technical Summary

Problems solved by technology

[0002] On the one hand, the existing electronic power-by-wire system lacks a hydraulic auxiliary control module. When the vehicle body is heavy, especially when the full load is larger than the large tonnage, because it needs to meet the 200ms braking pressure of the large tonnage vehicle to reach the pressure building requirement of 10MPa, it is necessary to use a Larger brake calipers require fluid, and the existing electronic power assist system without a hydraulic auxiliary module cannot meet the pressure building requirements due to reasons such as limited pedal travel or insufficient motor efficiency, which affects the braking deceleration of the vehicle and leads to brake boosting Insufficient, on the other hand, there is no pressure closed-loop control for pressure sensing. The existing technical solutions lack hydraulic adjustment modules and no pressure sensors to sense pressure in real time. The pressure of each part of the system is estimated by a virtual vehicle pressure model algorithm. Potential danger of inaccurate or lagging data

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