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Electric power steering system and method based on double-motor planetary gear structure

A technology of electric power steering and planetary gear, which is applied in the direction of electric steering mechanism, power steering mechanism, steering mechanism, etc., can solve the problems of unsatisfactory application, electric power steering output torque is too small, etc., to avoid mutual drag influence, Avoid wasted power, improve fuel economy and performance

Inactive Publication Date: 2019-03-05
CHANGAN UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

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

Method used

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  • Electric power steering system and method based on double-motor planetary gear structure
  • Electric power steering system and method based on double-motor planetary gear structure
  • Electric power steering system and method based on double-motor planetary gear structure

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Embodiment Construction

[0033] The present invention is further described below in conjunction with accompanying drawing:

[0034] see Figure 1 to Figure 3, an electric power steering system based on a double-motor planetary gear structure, including a steering wheel 1, a torque coupling gear 5, a second booster motor gear 6, a reducer 8, a first booster motor 20, a second booster motor 21, a synchronizer 18. The planetary gear mechanism and the first booster motor gear 17; the first steering shaft 23 and the second steering shaft 22 are arranged in sequence between the steering wheel 1 and the reducer 8; the output shaft of the first booster motor 20 is provided with a first booster Motor gear 17, the first booster motor gear 17 is connected with the planetary gear mechanism through the connecting shaft; the output shaft of the second booster motor 21 is provided with a torque coupling gear 5, and one side of the torque coupling gear 5 is coaxially provided with a second booster Motor gear 6; the ...

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Abstract

The invention relates to an electric power steering system and method based on a double-motor planet gear structure. The electric power steering system comprises a steering wheel, a torque coupling gear, a second power motor gear, a speed reducer, a first power motor, a second power motor, a synchronizer, a planet gear mechanism and a first power motor gear, wherein a first steering shaft and a second steering shaft are sequentially arranged between the steering wheel and the speed reducer; the first power motor gear is arranged on an output shaft of the first power motor, and is connected with the planet gear mechanism through a connecting shaft; the torque coupling gear is arranged on an output shaft of the second power motor, and the second power motor gear is coaxially arranged on one side of the torque coupling gear; the first power motor gear is meshed with the torque coupling gear; and the synchronizer is arranged between the torque coupling gear and the second power motor gear. According to the electric power steering system disclosed by the invention, through the cooperation of a plurality of electromagnetic clutches, influence caused by mutual drive of motors is avoided, so that the situation that the power capability is wasted is avoided.

Description

technical field [0001] The invention belongs to the technical field of automobile steering, and in particular relates to an electric power steering system and method based on a double-motor planetary gear structure. Background technique [0002] At present, most of the power steering systems used in commercial vehicles are hydraulic power steering systems, but there are many problems such as complex structure, large power consumption, easy leakage, difficult control of steering power, and single power steering characteristics. Compared with hydraulic power steering systems, electric power steering systems The power steering system has the advantages of adjustable power assist characteristics, good steering followability, low fuel consumption and no pollution, so it is widely used in passenger cars. The torque varies in a wide range, especially when the car is fully loaded and running at a low speed. The motor of this commercial vehicle can no longer meet the requirements of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D5/04
CPCB62D5/0421B62D5/043B62D5/0463B62D5/0478B62D5/0484
Inventor 李耀华欧鹏飞冯乾隆张洋森徐鹏
Owner CHANGAN UNIV
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