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Double-power-source electric hydraulic power-assisted steering system and control method thereof

A technology of hydraulic power steering and control method, which is applied in the direction of electric steering mechanism, power steering mechanism, steering mechanism, etc., which can solve problems such as low reliability, power loss of steering system, safety accidents, etc., so as to improve reliability and eliminate mutual interference , to achieve the effect of electrical isolation

Inactive Publication Date: 2017-06-23
TIANJIN SANTROLL ELECTRIC AUTOMOBILE TECH CO LTD
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AI Technical Summary

Problems solved by technology

[0003] However, the existing electro-hydraulic power steering system is generally given a rated speed to continuously increase the steering power, and the energy-saving effect is not obvious. In the event of failure, the steering system loses power, which will cause serious safety accidents, and the reliability is low

Method used

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  • Double-power-source electric hydraulic power-assisted steering system and control method thereof
  • Double-power-source electric hydraulic power-assisted steering system and control method thereof
  • Double-power-source electric hydraulic power-assisted steering system and control method thereof

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Embodiment Construction

[0021] The concrete implementation method of the present invention is as follows:

[0022] Such as figure 1 Shown is a schematic structural diagram of the first embodiment of the dual power supply electrohydraulic power steering system of the present invention, the dual power supply electrohydraulic power steering system includes a high voltage power supply, a low voltage power supply, a steering motor controller, a steering motor, a hydraulic pump, a steering gear, and a fuel tank , the steering motor controller is connected to the high-voltage power supply and the low-voltage power supply, the steering motor is connected to the steering motor controller, the hydraulic pump is connected to the steering motor, the steering gear and the oil tank are connected to the The hydraulic pump is connected, and the oil tank is connected with the steering gear.

[0023] The high-voltage power supply can be a vehicle-mounted drive power supply, such as a power battery or a super capacito...

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Abstract

The invention discloses a dual power supply electro-hydraulic power steering system and a control method thereof. The high-voltage power supply of the vehicle and the vehicle-mounted low-voltage power supply are used to simultaneously supply power to the double-winding steering motor. Respond in time to improve the reliability of the steering system, and use the low speed of the steering motor when there is no steering demand, and quickly increase the speed to provide steering assistance when there is a steering demand, effectively saving energy.

Description

technical field [0001] The invention relates to an electric vehicle electrohydraulic power steering system and a control method thereof, in particular to an electric vehicle dual power supply electrohydraulic power steering system and a control method thereof. Background technique [0002] With the development of new energy vehicles, the electro-hydraulic power steering system applied to new energy vehicles has developed rapidly. Most of the electro-hydraulic power steering systems generate flow for the rotation of the motor-driven steering oil pump, and then increase the steering power required by the car steering system. [0003] However, the existing electro-hydraulic power steering system is generally given a rated speed to continuously increase the steering power, and the energy-saving effect is not obvious. In the event of a failure, the steering system loses power assist and will cause serious safety accidents, and the reliability is low. Contents of the invention ...

Claims

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Application Information

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IPC IPC(8): B62D5/06B62D5/04
CPCB62D5/06B62D5/046B62D5/0481
Inventor 李岷舣张德星
Owner TIANJIN SANTROLL ELECTRIC AUTOMOBILE TECH CO LTD
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