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System and method for vehicle drive anti-skidding control based on satellite positioning speed measurement

A satellite positioning system and vehicle drive technology, applied in the fields of automatic control and vehicle engineering, can solve the problems of affecting the anti-skid control effect of the vehicle drive, inaccurate calculation of the precision slip rate, and difficulty in obtaining the moving speed of the vehicle, etc., to achieve good drive anti-skid Capability, low cost, low cost effect

Inactive Publication Date: 2013-07-24
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

), and the driving wheel slip rate is determined by two parameters: the driving wheel speed and the vehicle moving speed. Among these two parameters, the driving wheel speed can be obtained relatively easily through the speed sensor, but the moving speed of the vehicle is relatively difficult to obtain. The moving speed is usually obtained by converting the rotational speed of the non-driving wheels, but its accuracy is limited so that the calculation of the slip rate is inaccurate, which directly affects the driving anti-skid control effect of the vehicle. Anti-skid control is very beneficial, but the current sensors used to directly measure the vehicle's moving speed are relatively expensive and have not been widely used in vehicles

Method used

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  • System and method for vehicle drive anti-skidding control based on satellite positioning speed measurement

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Embodiment 1

[0023] The ephemeris data receiving module continuously receives GPS (or Beidou system) ephemeris data (satellite position, time information), and after calculation and processing, forms a general message in NMEA 0183 format, which should contain the receiving module’s position on the earth Position information (longitude, latitude, relative sea level, southern or northern hemisphere), send the message to the central processor with a specified communication protocol, and the sending interval is 100ms. The format of the above general message can also be other formats. The interval can be increased or shortened as needed; the central processing unit receives the message, and parses out the position information of the receiving module on the earth from it, then calculates the moving speed of the receiving module, and transmits the speed data to the drive anti-skid control unit, because the receiving module It is fixedly installed on the vehicle, so the moving speed of the receivin...

Embodiment 2

[0025] The ephemeris data receiving module continuously receives GPS (or Beidou system) ephemeris data (satellite position, time information), and after calculation and processing, forms a general message in NMEA 0183 format, which should contain the receiving module’s position on the earth Mobile speed information, and send the message to the central processor with a specified communication protocol, the sending interval is 100ms, the format of the above-mentioned general message can also be other formats, and the sending interval can be increased or shortened according to the needs; the central processor receives message, and analyze the moving speed of the receiving module on the earth, and transmit the speed data to the driving anti-skid control unit. Since the receiving module is fixedly installed on the vehicle, the moving speed of the receiving module represents the moving speed of the vehicle; While receiving the moving speed information, the anti-skid control unit also...

Embodiment 3

[0027]The ephemeris data receiving module continuously receives GPS (or Beidou system) ephemeris data (satellite position, time information), and after calculation and processing, forms a general message in NMEA 0183 format, which should contain the receiving module’s position on the earth For location information (longitude, latitude, relative sea level, southern or northern hemisphere), the message is sent to the drive anti-skid control unit with a specified communication protocol, and the sending interval is 100ms. The format of the above general message can also be other formats. The sending interval can be increased or shortened as needed; drive the anti-skid control unit to receive the message, and analyze the position information of the receiving module on the earth from it, and then calculate the moving speed of the receiving module. Since the receiving module is fixedly installed on the vehicle, the receiving module The moving speed of the vehicle represents the moving...

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Abstract

The invention discloses a system for vehicle drive anti-skidding control based on satellite positioning speed measurement. The system for the vehicle drive anti-skidding control based on the satellite positioning speed measurement comprises an ephemeris data receiving module, a central processing unit, a wheel rotating speed sensor, a drive anti-skidding control unit and a drive anti-skidding actuator. The invention further discloses the system and a method for the vehicle drive anti-skidding control based on the satellite positioning speed measurement. The system and the method for the vehicle drive anti-skidding control based on the satellite positioning speed measurement is low in cost, integration of the system and an existing vehicle is easy and the vehicle has good drive anti-skidding capacity. Vehicle speed is directly measured through a satellite positioning system, a slippage rate can be calculated simply, conveniently, easily and rapidly, and a new scheme is offered for vehicle drive anti-skidding control. The system and the method for the vehicle drive anti-skidding control based on the satellite positioning speed measurement is fast in reaction speed, high in control efficiency and low in cost.

Description

[0001] technical field [0002] The invention relates to signal collection and processing and automatic control technology, and belongs to the field of automatic control and vehicle engineering. Background technique [0003] The differential is an important part of the vehicle's power transmission system. The initial function of the ordinary differential is to satisfy the pure rolling driving of the wheels on both sides when the speed of the left and right driving wheels is inconsistent under the working conditions such as turning, so as to reduce the driving speed. resistance and tire wear. But the characteristic of the ordinary differential is that the differential speed is not bad, that is to say, if the influence of the friction force between the internal gears of the differential is not considered, the left and right half shaft gears of the differential will equally divide the torque transmitted by the main reducer of the vehicle when the vehicle is running. , when the...

Claims

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Application Information

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IPC IPC(8): B60W30/02
Inventor 吴跃成李闯杨超营吴婷婷
Owner ZHEJIANG SCI-TECH UNIV
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