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A control method for dual-motor electro-hydraulic compound braking system based on displacement control

A brake system and displacement control technology, applied in the direction of brakes, etc., can solve problems such as the inability to achieve effective control of the system, and achieve the effect of ensuring the brake pedal feel and good brake pedal feel

Active Publication Date: 2017-02-22
TONGJI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially when the dual-motor electromechanical electro-hydraulic braking system adopts a transmission system with self-locking characteristics, the force control will not be able to achieve effective control of the system

Method used

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  • A control method for dual-motor electro-hydraulic compound braking system based on displacement control
  • A control method for dual-motor electro-hydraulic compound braking system based on displacement control
  • A control method for dual-motor electro-hydraulic compound braking system based on displacement control

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Embodiment Construction

[0034] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.

[0035] According to one aspect of the present invention, a displacement control-based dual-motor electro-hydraulic brake system control method is provided, including: brake motor control logic, used to control the target torque of the brake motor, so as to match the brake pedal force The motor and regenerative braking force generate the corresponding target braking force; the pedal force simulates the motor control logic, which is used to control and provide the driver's brake pedal feeling, and at the same time cooperate with the brake pedal force motor and regenerative braking force to generate the corresponding target braking force.

[0036] Preferably, the control method of the dual-motor electro-hydraulic brake system uses the P-V characteristics of the brake system to realize the displacement control logic of the pedal force simulation mot...

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Abstract

The invention discloses a method for controlling a double-motor electric-hydraulic composite brake system on the basis of displacement control. The method includes controlling a brake motor: controlling target torque of the brake motor so as to brake a pedal force motor under the matching effect of the pedal force motor and regenerative brake force to generate corresponding target brake force; controlling a pedal force simulating motor: controlling brake pedal feel provided for a driver, and braking the pedal force motor under the matching effect of the pedal force motor and regenerative brake force to generate corresponding target brake force. The brake motor is controlled in a force control mode. The pedal force simulating motor is controlled in a displacement control mode. Displacement control logics for the pedal force simulating motor are implemented on the basis of P-V (pressure-volume) characteristics of the brake system. The method for controlling the double-motor electric-hydraulic composite brake system has the advantages that the double-motor electric-hydraulic composite brake system can be accurately controlled, the robustness is excellent, and the excellent brake feel can be provided for the driver on the premise that brake intention of the driver can be implemented.

Description

technical field [0001] The invention belongs to the technical field of automobiles, and relates to a braking system control technology, in particular to a displacement control-based dual-motor electro-hydraulic composite braking system control method. Background technique [0002] The braking system is a vital system related to the safety performance of the vehicle, and its performance will directly affect the driving safety performance of the vehicle. A traditional braking system usually consists of a brake pedal, vacuum booster, brake master cylinder, ESC / ABS, brake wheel cylinder and its corresponding pipelines. The whole system is relatively complex, and is at a disadvantage in volume, quality and integration. Moreover, as the efficiency of the engine continues to improve, the degree of vacuum it can provide to the vacuum booster becomes more and more limited. In order to make up for this problem caused by high-efficiency engines, many vehicles adopt an additional vacu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T8/17
Inventor 熊璐徐松云钱超余卓平
Owner TONGJI UNIV
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