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Catch-up prevention method of active front steering and apparatus thereof

A technology of active front wheel steering and prevention method, which is applied in the direction of electric steering mechanism, power steering mechanism, automatic steering control components, etc., and can solve the problems of steering response lag and excessive action, insufficient system performance, etc.

Inactive Publication Date: 2015-10-14
HYUNDAI MOTOR CO LTD
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Problems solved by technology

[0010] The present application is devoted to solving the above-mentioned problems and / or other problems involved in the related art, and the present application is devoted to providing a steering response lag (catch-up) prevention method of an active front wheel steering device, which can be applied without increasing the AFS In the case of the motor size of the vehicle's motor-driven power steering, through the control logic of the Active Front Steering (AFS), solve the problem of steering response lag and excessive action caused by insufficient system performance at the end of the steering

Method used

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  • Catch-up prevention method of active front steering and apparatus thereof
  • Catch-up prevention method of active front steering and apparatus thereof
  • Catch-up prevention method of active front steering and apparatus thereof

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[0034] Reference will now be made in detail to various embodiments of the invention, examples of which are illustrated in the accompanying drawings and described below. While the invention will be described in conjunction with exemplary embodiments, it will be appreciated that present description is not intended to limit the invention to those exemplary embodiments. On the contrary, the invention is intended to cover not only the exemplary embodiments but also various alternatives, modifications, equivalents and other alternatives, modifications, equivalents and others, which may be included within the spirit and scope of the invention as defined by the appended claims. implementation plan.

[0035] exist figure 1 The diagram on the left shows how the steering ratio changes depending on the angle of the steering wheel. That is, the graph on the left shows a case where the total transmission ratio (T.G.R) showing the steering wheel angle required when the tire is rotated by ...

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Abstract

A catch-up prevention method of an active front steering may include (a) judging whether an output of a power steering system is required in a vehicle to which the active front steering (AFS) is applied, (b) judging whether a steering angle of a steering wheel is increased to a preset predetermined angle or more, (c) judging whether an input speed of a pinion is larger than an output speed of the pinion, and (d) lowering a gear ratio of the active front steering when (a), (b) and (c) are satisfied.

Description

technical field [0001] The present application relates to a method and apparatus for preventing catch-up of steering response in an active front wheel steering arrangement during stop or low speed driving situations. Background technique [0002] Devices that electronically vary the steering ratio depending on vehicle speed are known as Active Front Steering (AFS). Vehicles with this steering system include a steering ratio varying mechanism consisting of planetary or harmonic gears to vary the output angle of the driver's steering wheel input. That is, make the output angle through AFS smaller than the driver's steering wheel input angle in high-speed driving conditions to improve the driving stability of the vehicle, and make the output angle through AFS larger than the driver's steering wheel in low / medium speed driving conditions Enter the angle to improve the vehicle's sensitivity and driving convenience. [0003] Considering the surrounding layout, the actuator of AF...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/04
CPCB62D5/008B62D6/002
Inventor 朴基成申敏澈
Owner HYUNDAI MOTOR CO LTD
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