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Antiskid control system and method for electromobile

An electric vehicle and control system technology, applied in the field of electric vehicles, can solve problems such as incapability of anti-skid control of electric vehicles, and achieve the effects of avoiding vehicle instability, improving safety and climbing ability, and improving acceleration performance.

Active Publication Date: 2012-03-28
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing ABS and ASR are aimed at motor-driven vehicles, but cannot perform anti-skid control on electric vehicles.

Method used

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  • Antiskid control system and method for electromobile
  • Antiskid control system and method for electromobile

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Experimental program
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Effect test

Embodiment Construction

[0010] see figure 1 , The antiskid control system of the electric vehicle of the present invention comprises a wheel speed sensor, a wheel brake, a motor and an ABS / ASR integrated control unit. Each wheel 6, 8, 11, 13 of the electric vehicle is equipped with a wheel speed sensor 41, 42, 51, 52, and the wheel speed sensor is used for real-time detection of the rotation speed of the corresponding wheel. Each wheel of the electric vehicle is provided with a wheel brake 7, 9, 10, 12, and the wheel brake is used to apply a braking force to the wheel. Electric motor 2 is powered by power battery 1, and it drives left and right front wheels 8,6 to rotate. The ABS / ASR integrated control unit 3 is integrated with ABS and ASR control programs. The output terminals of each wheel speed sensor are connected to the ABS / ASR integrated control unit, the output terminals of the integrated control unit are connected to the wheel brakes and electric motors, and the integrated unit also receive...

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Abstract

The present invention discloses one kind of antiskid control system for electromobile. The antiskid control system includes wheel speed sensors for detecting the real-time speeds of the wheels, wheel brakes for braking the wheels separately, one motor for driving the electromobile, and one ABS / ASR integrated control unit connected to all the sensors, the brakes and the motor. When the ABS / ASR integrated control unit receives an acceleration signal, the ABS / ASR integrated control unit regulates the real-time output torque of the motor based on the wheel slip rate and controls the wheel slip rate as 0.2; and when the ABS / ASR integrated control unit receives a braking signal, it regulates the real-time braking force based on the wheel slip rate. The present invention can reduce the slip rate of electromobile effectively and raise its running stability.

Description

technical field [0001] The invention relates to the field of electric vehicles, in particular to an anti-skid control system of the electric vehicle. Background technique [0002] At present, ABS and ASR have gradually become standard configurations on automobiles. The common goal of ABS and ASR is to limit the wheel slip rate within a certain acceptable range to ensure good driving performance of the vehicle. ABS (Anti-lock Braking System) is the anti-lock braking system of automobiles. It mainly controls and adjusts the pressure of the brake line to prevent the dangerous working conditions of the wheels from locking during the braking process of the vehicle, which can improve the handling performance of the vehicle. ; ASR (Anti-Slip Regulation) is a car drive anti-skid system, by adjusting the power output of the vehicle, making full use of the road adhesion rate, to achieve the effect of enhancing driving ability and handling stability. ASR usually has three control meth...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W30/02B60W10/184B60W10/192B60W10/08
Inventor 宋明陈伟夏承钢
Owner BYD CO LTD
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