Method for cooperatively controlling air pressure and regenerative brake of hybrid electric bus

A regenerative braking, hybrid technology, applied in the direction of brakes, etc., can solve the problem of insufficient braking force of the whole vehicle

Inactive Publication Date: 2011-03-30
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Due to the influence of the inertia of the vehicle transmission system, the response lag of the motor braking force is greater than that of the air pressure braking force, which will c...

Method used

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  • Method for cooperatively controlling air pressure and regenerative brake of hybrid electric bus
  • Method for cooperatively controlling air pressure and regenerative brake of hybrid electric bus
  • Method for cooperatively controlling air pressure and regenerative brake of hybrid electric bus

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Embodiment Construction

[0052] The present invention is described below in conjunction with accompanying drawing:

[0053] The invention relates to a coordinated control method for regenerative braking and air braking of a hybrid electric passenger car. figure 1 It is a flow chart of a method for coordinated control of regenerative braking and air braking of a hybrid electric vehicle, which includes the following steps:

[0054] 1) Collect the current air pressure force, brake pedal stroke, brake pedal stroke speed, battery information, motor information and vehicle status information of the hybrid electric bus;

[0055] 2) According to the brake pedal stroke, battery information, motor information and brake pedal stroke speed of the hybrid electric bus, the air brake force and the motor brake force are allocated;

[0056] 2.1 Distribute the braking force of the front axle and rear axle of the vehicle according to the braking intensity, and on this basis, distribute the motor braking force and air b...

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Abstract

The invention relates to a method for cooperatively controlling an air pressure and regenerative brake of a hybrid electric bus, which belongs to the technical field of new-energy vehicles. The method comprises the following steps of: firstly, collecting a current air pressure brake force, a brake pedal travel, a brake pedal travel speed, battery information, motor information and vehicle state information of a hybrid electric bus; secondly, distributing the air pressure brake force and a motor brake force by utilizing a regenerative brake force distribution algorithm; thirdly, cooperatively controlling regenerative brake and an ABS (Antilock Brake System) by utilizing a regenerative brake and ABS cooperative control algorithm; and fourthly, compensating and controlling the air pressure brake force by utilizing an air pressure brake force compensation control algorithm. By utilizing the invention, part resources of the common air pressure brake system and the regenerative brake system of the hybrid electric bus can be fully utilized, the brake energy can be recycled to the maximum extent, the economical efficiency of the entire bus is enhanced, and wheels can be prevented from locking so that the brake safety of the entire bus is improved.

Description

technical field [0001] The invention belongs to the technical field of new energy vehicles. Background technique [0002] Coordinated control of pneumatic braking and regenerative braking in hybrid electric buses plays an important role in maximizing energy recovery and braking safety during regenerative braking, so it has attracted great attention from domestic and foreign companies and scholars. However, the current research still focuses on improving the recovery rate of braking energy through the distribution of regenerative braking force, and there are few regenerative braking force distribution strategies that consider the safety of braking. Therefore, it is necessary to distribute the regenerative braking force from the viewpoint of braking safety. [0003] There are few domestic studies on the coordinated control strategy of regenerative braking and ABS. Most of the proposed methods are that when the ABS is triggered, the regenerative braking force is turned off, an...

Claims

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Application Information

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IPC IPC(8): B60T8/17B60L7/10
Inventor 初亮房永尚明利周飞琨郭建华张永生欧阳晁立波姚亮柳帅
Owner JILIN UNIV
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