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Vehicle steering control method, device and vehicle steering system

A steering control and vehicle technology, which is applied to automatic steering control components, vehicle components, steering mechanisms, etc., can solve problems such as loss of steering wheel control, driver's hands-off, traffic accidents, etc., to avoid damage from external impacts and prevent deviation. Effect

Active Publication Date: 2022-03-25
DONGFENG MOTOR CORP HUBEI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing vehicles equipped with EPS often encounter steering wheel "thugs" during use. For example, when driving on bumpy roads, large pits, or when a car accident involves the steering system, the steering wheel turns rapidly due to strong reverse force. , will cause damage to the driver's hands, and cause the driver to lose control of the steering wheel and cause traffic accidents, ranging from car scratches to serious car crashes.

Method used

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  • Vehicle steering control method, device and vehicle steering system
  • Vehicle steering control method, device and vehicle steering system
  • Vehicle steering control method, device and vehicle steering system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] An embodiment of the present invention provides a vehicle steering control method, which is applied to a vehicle with an electric power steering system (hereinafter referred to as EPS), and the steering force of the vehicle is assisted by power such as an electric booster. The EPS drives a power device such as an electric power booster so that the steering control main shaft obtains a steering assist force corresponding to the steering force that has been applied to the steering wheel by the driver, thereby assisting the driver in performing a steering operation.

[0052] see figure 1 , the vehicle steering control method specifically includes the following steps:

[0053] (1) Obtain the first torque Tt1 of the steering control main shaft of the vehicle, where the first torque Tt1 is the actual torque of the steering control main shaft at the current moment.

[0054] The steering control spindle is the control spindle of the vehicle steering system. Both the steering w...

Embodiment 2

[0075] Based on the same inventive concept, this embodiment provides a vehicle steering system 100, which is used in the vehicle steering control method of the first embodiment above. That is, this vehicle steering system 100 is a vehicle steering system 100 including EPS.

[0076] see figure 2 , the vehicle steering system 100 includes a steering wheel 1, a buffer assembly 2, a steering control spindle 3, an electric power booster 4 (part of EPS), a steering gear 5, a controller 6, a torque sensor 7 and a position detection sensor 8, the steering wheel 1, The buffer assembly 2 , the steering control main shaft 3 and the steering gear 5 are sequentially connected to transmit torque, and the buffer assembly 2 is used to disconnect / establish the connection between the steering wheel 1 and the steering control main shaft 3 . In the vehicle steering system 100, the steering wheel 1, the steering control spindle 3, the electric power booster 4 (including the speed reducer) and th...

Embodiment 3

[0083] Based on the same inventive concept, this embodiment provides a vehicle steering control device, which is used in the vehicle steering control method of the above-mentioned embodiment 1; the vehicle steering control device includes:

[0084] The obtaining module is used to obtain the first torque Tt1 of the steering control main shaft of the vehicle and / or the disturbance angle α of the steering wheel; in other optional embodiments, the obtaining module is also used to obtain the second torque Tt2 of the steering control main shaft.

[0085] The comparison module is used to compare the first torque Tt1 with the first torque threshold T1; in other optional embodiments, the comparison module can also be used to compare the second torque Tt2 with the second torque threshold T2.

[0086] The judging module is used to judge whether the active driving recovery condition is satisfied, and the active driving recovery condition includes: condition a) the interference external for...

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Abstract

The invention discloses a vehicle steering control method, device and vehicle steering system. The vehicle steering control method includes: obtaining the first torque Tt1 of the steering control spindle of the vehicle, and comparing the first torque Tt1 with the first torque threshold T1; when Tt1≥ At T1, it is determined that the vehicle has an interfering external force, the connection between the steering wheel and the steering control spindle is disconnected, the interfering angle α of the steering wheel is obtained, the electric booster of the vehicle is controlled to be turned off, and the electric booster is turned on after a set time t , to correct the position of the steering gear of the vehicle; determine whether the active driving recovery condition is satisfied, and if so, establish a connection between the steering wheel and the steering control spindle. The invention can resolve the reaction force caused by the interference of external force, effectively protect the hands of the driver, protect the various components of the steering system, and prevent the components from being damaged by the impact of external force; the position of the steering wheel and the position of the steering gear can be quickly and effectively returned to prevent the steering wheel from running Partial.

Description

technical field [0001] The present application belongs to the technical field of vehicle steering control, and in particular relates to a vehicle steering control method, device and vehicle steering system. Background technique [0002] Electric Power Steering (EPS, Electric Power Steering) is a power steering system that directly relies on the motor to provide auxiliary torque. It is mainly composed of a steering sensor, an electronic control unit, an electric motor, a reducer, and a mechanical steering gear. Under the control of the electronic control unit, the car can easily realize the variable power assist function, that is, when the vehicle speed is low, the power assist energy is large and the steering wheel is light; when the vehicle speed is high, the power assist energy is small and the steering wheel is heavy. Compared with the traditional hydraulic power steering system (HPS, Hydraulic Power Steering), the EPS system saves the power steering oil pump, hose, hydra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D15/02B62D5/04B62D6/00B62D113/00B62D119/00B62D137/00
Inventor 朱伟宏陈玉龙饶成张应龙姜胜克
Owner DONGFENG MOTOR CORP HUBEI