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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, the vehicle cannot be effectively controlled.

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

Embodiment 1

[0056] figure 1 It is a flow chart of a method for controlling the traction force of a hybrid four-wheel drive vehicle provided in Embodiment 1 of the present invention. This embodiment is applicable to the situation where the vehicle traction force is controlled when the vehicle slips. The method can be controlled by the vehicle traction force control device to perform, such as figure 1 As shown, the method specifically includes the following steps:

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

[0058] Among them, the current reference vehicle speed can be understood as the speed at which the entire vehicle moves forward. According to the four wheel speeds of the vehicle, the vehicle longitudinal acceleration and the steering wheel angle signal, the vehicle reference speed is calculated by the Kalman filter method.

[0059]...

Embodiment 2

[0135] figure 2It is a schematic structural diagram of a traction force control device for a hybrid four-wheel drive vehicle in Embodiment 2 of the present invention. Such as figure 2 As shown, the device includes:

[0136] The current reference vehicle speed determination module 210 is used to determine the current reference vehicle speed according to the four wheel speeds of the vehicle, the longitudinal acceleration of the vehicle and the operating conditions of the steering wheel angle signal;

[0137] The driving condition detection module 220 is used for receiving and processing the wheel speed signals and wheel acceleration signals sent by the wheel speed sensors of the four wheels, receiving and processing the longitudinal acceleration signals of the vehicle sent by the yaw rate sensors, and receiving and processing the vehicle longitudinal acceleration signals according to the steering wheel Receiving the steering wheel angle signal from the angle sensor and judgi...

Embodiment 3

[0185] image 3 It is a schematic structural diagram of a computer device provided by Embodiment 3 of the present invention. image 3 A block diagram of a computer device 312 suitable for implementing embodiments of the invention is shown. image 3 The computer device 312 shown is only an example, and should not impose any limitation on the functions and scope of use of the embodiments of the present invention. Device 312 is a computing device for typical vehicle traction control functions.

[0186] Such as image 3 As shown, computer device 312 takes the form of a general-purpose computing device. Components of computer device 312 may include, but are not limited to: one or more processors 316, storage 328, bus 318 connecting various system components including storage 328 and processor 316.

[0187] Bus 318 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor, o...

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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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