Electric power steering device and method

A technology of electric steering and steering motor, which is applied in the direction of electric steering mechanism, power steering mechanism, steering mechanism, etc., and can solve the problems of increasing the steering burden of the driver, the inability of the electric steering system to provide steering auxiliary power, and the reduction of output

Pending Publication Date: 2022-03-04
HL MANDO CORP
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

[0004] However, in the case where the output is maintained with only one winding in the dual winding type motor, the output is reduced compared to the normal state, thus increasing the driver's steering burden
In particular, when the rotation speed of the motor is increased, the motor also generates back electromotive force, thus making it impossible for the electric steering system to provide normal steering assist power

Method used

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  • Electric power steering device and method
  • Electric power steering device and method
  • Electric power steering device and method

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Embodiment Construction

[0027] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those having ordinary knowledge in the technical field to which the present invention pertains can easily implement. The present invention can be realized in various forms, and is not limited to the embodiments described here. In order to clarify the present invention, parts irrelevant to the description are omitted from the drawings, and the same reference numerals are assigned to the same or similar components throughout the specification.

[0028] In this specification, terms such as "comprising" or "having" should be understood as specifying the existence of features, numbers, steps, actions, members, components or combinations thereof described in the specification, and are not excluded in advance. The existence or possibility of addition of one or more other features or numbers, steps, actions, components, parts, or combinations of thes...

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PUM

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Abstract

An electric power steering apparatus and method are disclosed. An electric power steering device according to one embodiment of the present invention comprises: a steering motor including a first winding and a second winding to which a three-phase power supply is applied; a first control unit that controls power supplied to the first winding; a second control unit that controls power supplied to the second winding; when an open-circuit fault occurs in one phase of the first winding and one phase of the second winding, a control unit that controls a winding including the one phase in which the open-circuit fault occurs in the first control unit and the second control unit executes torque compensation control for adding an output compensation torque.

Description

technical field [0001] The present invention relates to an electric power steering apparatus and method, and more particularly, to an electric power steering apparatus and method for assisting or generating steering force by an electric motor including a plurality of windings. Background technique [0002] With the development of automobile technology, the existing mechanical and hydraulic steering devices are being replaced by electric power steering (EPS: Electric Power Steering) systems using electric motors. The electric steering system uses a motor driven by electric energy to provide steering assist power when the steering wheel is rotated to generate torque. In the case of using the electric steering system, the steering force of the steering wheel is appropriately changed through electronic control according to the vehicle speed, the steering force is reduced at low speeds, and the steering force is increased at high speeds to achieve stable high-speed driving. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/04H02P29/028
CPCB62D5/0487B62D5/0484B62D5/046B62D5/04H02P29/028H02P29/0243B62D6/08
Inventor 申成遇李种训
Owner HL MANDO CORP
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