Electric bus double-source power-assisted steering system and control method

An electric passenger car and power steering technology, applied in the direction of automatic steering control components, steering mechanisms, steering rods, etc., can solve the problems of immediate disappearance, affecting driving safety, occurrence of danger, etc., to ensure continuous normal work, to ensure uninterrupted work, The effect of ensuring steering reliability

Active Publication Date: 2018-10-12
ZHONGTONG BUS HLDG
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Problems solved by technology

However, when the high-voltage power supply of the vehicle fails abnormally due to non-human factors, the electric steering system will stop working due to the high-voltage power failure of the electric steering controller, and the power steering of the vehicle will disappear immediately, causing the direction to rebound and causing danger.
Especially when the vehicle is turning at a high speed, the sudden loss of the power assist function will seriously affect driving safety

Method used

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  • Electric bus double-source power-assisted steering system and control method

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the drawings and specific embodiments.

[0029] It should be pointed out that the following detailed descriptions are all illustrative and are intended to provide further explanations for the application. Unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0030] It should be noted that the terms used here are only for describing specific implementations, and are not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate There are features, steps, operation...

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Abstract

The invention discloses an electric bus double-source power-assisted steering system and a control method to achieve safety of steering of an electric bus. Under the normal condition of a bus, a powerconversion device and a specific control method are adopted, a high-voltage power supply of the bus is preferentially used for supplying power for a steering controller, and the continuous normal operation of the steering system is ensured; and meanwhile, the seamless cut-in of a direct-current converter is carried out under the condition of abnormal power failure of the high-voltage power supply, and a low-voltage power supply can be used for supplying power for the steering controller so as to continuously maintain a power-assisted steering function, so that the steering reliability in therunning process of the bus is ensured, and potential safety hazards caused by sudden failure of steering power after high-voltage abnormal power failure are avoided.

Description

Technical field [0001] The invention relates to the field of design and manufacture of electric passenger cars, in particular to a dual-source power steering system and control method for electric passenger cars. Background technique [0002] Under normal circumstances, the electric steering controller of the electric passenger car uses the high-voltage power supply of the whole vehicle to drive the electric power steering oil pump motor of the whole vehicle to work continuously and normally. However, in the case of abnormal failure of the high-voltage power supply of the vehicle due to non-human factors, the electric power steering system will stop working due to the high-voltage power failure of the electric power steering controller, and the power-assisted steering of the vehicle will immediately disappear, causing the direction to rebound, which is dangerous. Especially when the vehicle is steering at a higher speed, the sudden loss of the assist function will seriously affec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R16/03B62D5/06B62D6/00B62D101/00
CPCB60R16/03B62D5/06B62D6/00
Inventor 刘涛王波徐彪魏琳陈乐强
Owner ZHONGTONG BUS HLDG
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