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Method for traction control of multi-wheel-distributed hybrid power system

A technology of a hybrid power system and a control method, which is applied in the field of driving anti-skid control of a multi-wheel distributed hybrid power system, can solve problems such as difficulty in general application, difficulty in obtaining a vehicle speed signal, and no description of the realization process of the driving anti-skid control method, etc. Guaranteed accuracy, improved stability and dynamics, and improved anti-slip control effects

Active Publication Date: 2019-04-05
JILIN UNIV
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Problems solved by technology

Among them, the wheel speed can be easily obtained, but the vehicle speed signal is difficult to obtain; if the vehicle speed sensor is used to directly obtain the vehicle speed information, it is difficult to be widely used in vehicles from the perspective of cost
Chinese Patent Publication No. CN103213577A, date of publication 2013-07-24, the title of the invention is "a vehicle drive anti-skid control system and method based on satellite positioning and speed measurement", the invention directly measures the speed of the vehicle through the GPS satellite positioning system, so that the slip rate can be calculated Convenient and feasible; but the invention does not illustrate the specific implementation process of the drive anti-slip control method

Method used

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  • Method for traction control of multi-wheel-distributed hybrid power system
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  • Method for traction control of multi-wheel-distributed hybrid power system

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Embodiment Construction

[0043] Below in conjunction with accompanying drawing, the present invention is described in more detail:

[0044] A driving anti-slip control method suitable for a multi-wheel distributed hybrid power system proposed by the present invention, such as figure 1 As shown, it specifically includes the following steps:

[0045] Step 1: GPS satellite positioning system to measure vehicle speed

[0046] refer to figure 2 As shown, the GPS receiver continuously receives the GPS telegram ephemeris data, analyzes the data with the algorithm preset by the device, and outputs the GPS message in accordance with the NMEA-0183 communication protocol; then, processes the speed information of the message, and uses experience The modal decomposition processing method performs five-order decomposition filtering on the vehicle speed; finally, the filtered speed value is sent to the central processing unit at a certain time interval according to the specified communication protocol, and the ce...

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Abstract

The invention provides a method for traction control of a multi-wheel-distributed hybrid power system, and aims to improve the robustness of the method for the traction control under different road surface conditions. The method comprises the steps of firstly utilizing a GPS satellite positioning system to obtain an accurate vehicle speed as important input for the calculation of slip ratio, secondly calculating the wheel slip ratio and utilization adhesion coefficients according to the relationship between the vehicle speed and a wheel rotation speed and a wheel moment equilibrium equation, then using a database and a road surface recognition method to obtain the optimal wheel slip ratio, and finally performing the traction control.

Description

technical field [0001] The invention relates to a vehicle anti-slip control method, in particular to a driving anti-slip control method for a multi-wheel distributed hybrid power system. Background technique [0002] The multi-wheel distributed hybrid power system has many technical advantages such as simplifying the chassis structure, improving transmission efficiency, and enhancing control performance, and has become one of the hot spots in the development of electric vehicles. From the perspective of vehicle driving safety, it is very important to suppress the excessive slip of the driving wheels and realize the anti-skid control of the vehicle; however, there are few in-depth researches on the anti-skid control method of the multi-wheel distributed hybrid system. At present, the methods of driving anti-slip mainly include logic threshold, PID control, fuzzy control, synovial film variable structure control and other methods. Among them, the logic threshold method is used...

Claims

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Application Information

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IPC IPC(8): B60L15/20B60W10/08B60W30/02B60W20/00
CPCB60L15/20B60W10/08B60W20/00B60W30/02B60W2520/10B60W2520/26B60W2710/083Y02T10/72Y02T90/16
Inventor 曾小华王振伟宋大凤钱琦峰张轩铭姜效望陈建新李晓建牛超凡高福旺
Owner JILIN UNIV
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