Vacuum servo brake control system and control method of unmanned electric automobile

A technology for electric vehicles and unmanned driving, which is applied in the direction of brakes, brake transmissions, vehicle components, etc., and can solve problems such as braking of unmanned electric vehicles

Active Publication Date: 2017-02-15
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a vacuum-assisted braking control system an

Method used

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  • Vacuum servo brake control system and control method of unmanned electric automobile
  • Vacuum servo brake control system and control method of unmanned electric automobile
  • Vacuum servo brake control system and control method of unmanned electric automobile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0083] When the car is running normally without braking, the valve II26 and valve I24 of the vacuum booster braking control system are in a normally closed state.

[0084]The electric vacuum pump 2 is connected with the vacuum air storage tank 5 through a one-way valve 3. For example, the electric vacuum pump 2 adopts a DC12V motor, and the pumping rate is 60L / min, and the relative vacuum degree can reach -0.09MPa.

[0085] The vacuum gas storage tank 5 is provided with a vacuum degree sensor I4, which is electrically connected with the electronic control unit 28, and sends the measured vacuum degree value to the electronic control unit 28 in real time, and then sent to the CAN bus through the electronic control unit 28 , thus sharing the data. According to the power of the electric vacuum pump 2, the pressure range of the vacuum air storage tank 5 is set to 55KPa~70KPa, and the volume is 5L, which ensures the ability of emergency braking. When the vacuum sensor I4 detects th...

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Abstract

The invention provides a vacuum servo brake control system and control method of an unmanned electric automobile and belongs to the technical field of automobile brake. The vacuum servo brake control system comprises an instrument panel, an electric vacuum pump, a one-way valve, a first vacuum degree sensor, a vacuum gas storage tank, an alarm, a filter ring, a felt filter ring, a vacuum thruster, a first valve, a first servo motor, a second valve, a second servo motor and an electric control unit. According to the vacuum servo brake control system, the vacuum thruster only has a front air chamber, and differently, a traditional vacuum thruster has two air chambers; the first servo motor and the first valve are in rigid connection, the second servo motor and the second valve are in rigid connection, and the opening of the valves is adjusted precisely and quickly; and an air chamber shell is provided with a first air hole and a second air hole, one air hole can communicate with the atmosphere by adjusting the opening of the valves and suck or exhaust air by adjusting the valves through the motors independently, and therefore the hole can be used in the vacuum thruster of the unmanned electric automobile. The vacuum servo brake control system can be applied to the unmanned electric automobile and has good development prospects.

Description

technical field [0001] The invention belongs to the technical field of automobile braking, and in particular relates to a vacuum-assisted braking control system and control method for an unmanned electric vehicle. Background technique [0002] With the rapid development of the automobile industry and the continuous reduction of non-renewable energy, electric vehicles are an inevitable trend of future development. Unmanned electric vehicles are a development direction of smart vehicles, and the braking of unmanned electric vehicles cannot continue to be used. conventional braking system. At present, the braking system of electric vehicles is mostly composed of brake pedal mechanism, brake master cylinder, vacuum booster, vacuum pump, vacuum air storage tank, etc. The vacuum booster is suitable for use on traditional internal combustion engine vehicles, and the vacuum pump is driven by the internal combustion engine to extract vacuum power. The air in the air chamber in front...

Claims

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Application Information

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IPC IPC(8): B60T13/52B60T13/569B60T13/72
CPCB60T13/52B60T13/569B60T13/72
Inventor 金立生徐俊姬生远管信高琳琳李科勇谢宪毅王发继陈梅岳欣羽郭柏苍冯成浩夏海鹏朱菲婷
Owner JILIN UNIV
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