Control method for traction force of hybrid four-wheel drive vehicle

A Traction Control, Traction Technology

Active Publication Date: 2021-06-01
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in some special working conditions,

Method used

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  • Control method for traction force of hybrid four-wheel drive vehicle
  • Control method for traction force of hybrid four-wheel drive vehicle
  • Control method for traction force of hybrid four-wheel drive vehicle

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0055]Example one

[0056]figure 1 A flow chart of a control method of a mixed four-wheel drive vehicle is a control method of a mixed four-wheel drive vehicle, and the present embodiment can be applied to the case where the vehicle traction is controlled when the vehicle occurs, the method can be trailed by the vehicle. The control device is executed, such asfigure 1 As shown, the method specifically includes the steps of:

[0057]Step 110 determines the current reference speed according to the four wheel speed, the vehicle longitudinal acceleration, and the steering wheel corner signal of the vehicle.

[0058]Among them, the current reference speed can be understood as the speed of moving forward, depending on the four wheel speed, the vehicle longitudinal acceleration, and the steering wheel corner signal, the vehicle reference speed is calculated by the Kalman filter.

[0059]Step 120, according to the travel speed of the vehicle, the road condition and the driving system operating mode ado...

Example Embodiment

[0134]Example 2

[0135]figure 2 It is a schematic structural diagram of a control device of a mixed four-wheel drive vehicle traction of the second embodiment of the present invention. Such asfigure 2 As shown, the apparatus includes:

[0136]The current reference vehicle speed determination module 210 is used to determine the current reference speed according to the four wheel speed, vehicle longitudinal acceleration, and the directional disk corner signal operating conditions;

[0137]The driving conditions detecting module 220 is used to receive and process the reception and processing of the longitudinal acceleration signal of the vehicle emitted by the cross-swing angular velocity sensor according to the number of wheel speed signals emitted according to the four wheels. The reception of the steering wheel corner signal emitted by the corner sensor and the judgment of the vehicle attitude according to the recognition of the road attachment coefficient;

[0138]The traction control mode de...

Example Embodiment

[0184]Example three

[0185]image 3 A structural diagram of a computer apparatus provided in the third embodiment of the present invention.image 3 A block diagram showing a computer device 312 suitable for implementing the embodiment of the present invention is shown.image 3 The displayed computer device 312 is merely an example, and there is no limit to the functions of the embodiments of the present invention. Device 312 is a computing device of a control function of a typical vehicle traction.

[0186]Such asimage 3 As shown, computer device 312 is expressed in the form of a general computing device. Components 312 can include, but are not limited to, one or more processors 316, storage device 328, and bus 318 connecting different system components (including storage devices 328 and processor 316).

[0187]Bus 318 represents one or more of several types of bus structures, including memory bus, memory controllers, peripheral bus, graphical acceleration port, processor, or a local area bus ...

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Abstract

The embodiment of the invention discloses a control method for traction force of a hybrid four-wheel drive vehicle. The control method comprises the steps of determining a current reference vehicle speed according to four wheel speeds of a vehicle, a vehicle longitudinal acceleration and a steering wheel angle signal; adopting a corresponding traction force control mode according to the running speed of the vehicle, the road condition and the working mode of a driving system; according to the motion information of driving wheels, the reference vehicle speed and the state information of the vehicle, determining whether traction force control entering conditions are met currently; if the vehicle meets the traction force control entering conditions, making further judgment according to the motion information of the driving wheels and the reference vehicle speed, determining traction force control entry and exit strategies, and controlling the vehicle based on the determined traction force control mode and strategy. According to the embodiment of the invention, the traction force control mode and the entry and exit strategies of traction force control are determined according to the current vehicle state and the motion information of the driving wheels, the vehicle is controlled based on the traction force control strategy, and the traction property and stability of the vehicle during slippage are ensured.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of vehicles, and in particular to a method for controlling traction force of a vehicle. Background technique [0002] Traction Control System (TCS) belongs to the active safety system of automobiles. When the vehicle starts or accelerates, the TCS function will monitor the slip ratio of the driving wheels. If the slip ratio exceeds the threshold value, TCS will adjust the slip ratio of the driving wheels by reducing the torque or braking to ensure the acceleration performance and stability of the vehicle. sex. The realization of TCS consists of two parts, one is to drive left and right through the engine throttle adjustment mechanism of traditional fuel vehicles or the vehicle controller (Vehicle Control Unit, VCU) of electric vehicles or the vehicle controller of hybrid electric vehicles (Hybrid Control Unit, HCU). The wheel is controlled and adjusted symmetrically, collectively ...

Claims

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Application Information

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IPC IPC(8): B60W10/08B60W10/18B60W20/15B60W30/02B60W40/105B60W40/107
CPCB60W10/08B60W10/18B60W40/105B60W40/107B60W20/15B60W30/02B60W2520/105B60W2520/28B60W2510/20B60W2710/083B60W2710/18
Inventor 刘冬雨徐华林官浩户俊营闫鲁平邸丽伟刘志鹏张立亮鲁兰
Owner CHINA FIRST AUTOMOBILE
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