Double-more electric power-assisted steering system and power-assisted steering method thereof

A technology of electric power steering and dual motors, which is applied in the field of steering systems, can solve the problems of unsatisfactory application and too small output torque of electric power steering, and achieve the goal of improving fuel economy, increasing output torque, and ensuring steering reliability Effect

Inactive Publication Date: 2015-04-22
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a dual-motor electric power steering system and its power steering method to solve the problem that the electric power steering output torque is too small to meet the application on commercial vehicles

Method used

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  • Double-more electric power-assisted steering system and power-assisted steering method thereof
  • Double-more electric power-assisted steering system and power-assisted steering method thereof
  • Double-more electric power-assisted steering system and power-assisted steering method thereof

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Embodiment Construction

[0019] see figure 1 As shown, a dual-motor electric power steering system of the present invention includes: steering wheel 1, steering wheel torque angle sensor 2, second steering shaft 4, first torque coupler 5-1, second torque coupler 5- 2. Steering gear 6, first steering shaft 7, first booster motor 8 and second booster motor 9.

[0020] The bottom of the steering wheel 1 is connected to the first steering shaft 7, and the first steering shaft 7 is connected to the second steering shaft 4 through a universal joint; the steering wheel torque and angle sensor 2 is arranged under the steering wheel 1 for real-time collection of torque and rotation angle signals of the steering wheel 1 The first booster motor 8 and the second booster motor 9 are connected in parallel through the first torque coupler 5-1, and the first electromagnetic clutch 10-1 is connected between the second booster motor 9 and the first torque coupler 5-1; The output end of the torque coupling 5 - 1 is con...

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PUM

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Abstract

The invention discloses a double-more electric power-assisted steering system and a power-assisted steering method thereof. A first steering shaft is connected under a steering wheel in the system and is connected with a second steering shaft through a universal joint. A steering wheel torque turning angle sensor is arranged under the steering wheel and used for acquiring torque and turning angle signals of the steering wheel in real time. A first power-assisted motor and a second power-assisted motor are connected through a first torque coupler in parallel, and a first electromagnetic clutch is connected between the second power-assisted motor and the first electromagnetic clutch. The output end of the first torque coupler is connected with the second steering shaft through a second torque coupler in parallel. The output end of the second torque coupler is connected with a steering gear through a third steering shaft. The double-more electric power-assisted steering system is provided with two power-assisted motors connected through the torque couplers so as to control the single power-assisted motor or the two power-assisted motors to simultaneously output torque according to required power-assisted torque and meets the large-torque demands of commercial passenger cars and the like, the fuel economy of commercial vehicles is improved, and operation cost is reduced.

Description

【Technical field】 [0001] The invention relates to a steering system, in particular to an electric power steering system and a power steering method thereof. 【Background technique】 [0002] The existing electric power steering system is safe and reliable, and the steering characteristic curve is ideal. At the same time, due to the use of a DC motor, the engine does not need to provide high-pressure oil, and the fuel economy of the whole vehicle is good. However, limited by the battery power supply voltage and installation size of automobiles, the output torque of electric power steering is relatively small, which cannot meet the requirements of commercial vehicle steering assistance. At present, the application field is still limited to passenger cars or light commercial vehicles. Therefore, from the perspective of fuel economy, the use of electric power steering system with large output torque has positive significance for improving the fuel economy of commercial vehicles a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/04
CPCB62D5/04B62D5/0463
Inventor 李耀华赵文亮焦森
Owner CHANGAN UNIV
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