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Electric power steering system, steering control method and automobile

An electric power steering and steering system technology, which is applied to automatic steering control components, electric steering mechanisms, steering mechanisms, etc., can solve the problems of vehicle active safety, and there is no better solution for active avoidance.

Active Publication Date: 2012-06-13
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In summary, the existing electric power steering system only assists the driver in steering, centering, and handling operations according to the driver's operation intention, but there is no good solution in terms of vehicle active safety and active avoidance.

Method used

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  • Electric power steering system, steering control method and automobile
  • Electric power steering system, steering control method and automobile
  • Electric power steering system, steering control method and automobile

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0082] Such as figure 1 As mentioned above, in this embodiment, the electric power steering system includes a signal acquisition unit, a control unit and an execution unit. The signal acquisition unit is connected with the control unit for real-time collection of vehicle surrounding environment information, steering wheel torque signal and steering wheel angle signal, and outputs the above signals to the control unit in real time; the control unit is connected with the execution unit for Receive the signal output by the signal acquisition unit in real time, judge according to the signal and select whether to enter the active steering mode or the auxiliary steering mode, and accordingly send instructions to the execution unit to control it to perform steering operation, centering operation or stability control . Wherein, the vehicle surrounding environment information includes the relative distance and relative speed between the vehicle and surrounding obstacle information.

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Embodiment 2

[0154] The difference between this embodiment and Embodiment 1 is that in the electric power steering system described in this embodiment, the signal acquisition unit does not include an ultrasonic sensor, that is, the signal acquisition unit only includes a camera, and the camera uses several and the number of camera devices can be determined according to actual needs. The camera devices can be installed on the front bumper of the vehicle, the left and right sides of the vehicle, and the rear side of the vehicle for real-time collection of environmental images of the front, left and right sides, and rear of the vehicle. information.

[0155] Other methods, structures, and functions in this embodiment are the same as those in Embodiment 1, and will not be repeated here.

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Abstract

The invention provides an electric power steering system. The system comprises a signal acquisition unit, a control unit and an execution unit, wherein the control unit is used for receiving a signal output by the signal acquisition unit in real time, judging whether to enter an active steering mode or an auxiliary steering mode according to the signal, transmitting a command to the execution unit according to the signal and controlling the execution unit to act correspondingly. The invention also provides an automobile using the electric power steering system and a method for controlling the steering of a vehicle based on the electric power steering system. According to the system, the method and the automobile, an auxiliary steering control function, an aligning power control function, an aligning damping control function and other functions of the conventional electric power steering system can be realized, ambient environment information of the vehicle can be detected, and an active steering control function can be realized under an emergent working condition, so that traffic accidents can be effectively prevented.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to an electric power steering system of an automobile, a steering control method based on the electric power steering system and an automobile using the electric power steering system. Background technique [0002] With the development of automobile technology and the substantial increase in car ownership year by year, people have put forward higher and higher requirements for the intelligence and safety of automobiles. The steering system of automobiles is also developed from ordinary mechanical steering system (Manual Steering, MS) to power steering system, which includes hydraulic power steering system (Hydraulic Power Steering, HPS), electronically controlled hydraulic power steering system ( Electro Hydraulic Power Steering (EHPS) and Electric Power Steering (EPS). Among them, the electric power steering system is favored due to its advantages of energy saving and environmental prot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/04B62D6/00B62D119/00B62D113/00B62D137/00B62D101/00
Inventor 袁朝春陈效华
Owner CHERY AUTOMOBILE CO LTD
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