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Dual-motor electric power steering system and power steering method thereof

An electric power steering, dual motor technology, applied in the direction of electric power steering mechanism, etc., can solve the problem that the output torque of electric power steering is too small and cannot meet the application, so as to improve the output torque, improve fuel economy, and prevent major accidents. Effect

Inactive Publication Date: 2017-04-19
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 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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  • Dual-motor electric power steering system and power steering method thereof
  • Dual-motor electric power steering system and power steering method thereof
  • Dual-motor electric power steering system and power steering method thereof

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Embodiment Construction

[0031] see figure 1 As shown, a dual-motor electric power steering system of the present invention includes: a steering wheel 1, a steering wheel torque angle sensor 2, a control unit 3, a second steering shaft 4, a torque coupling 5, a steering gear 6, and a first steering shaft 7. Main booster motor 8, auxiliary booster motor 9, one-way clutch assembly 10, reducer 11, overload protector 12, normally closed electromagnetic clutch 13.

[0032] 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 (for the number of steering shafts, it can be selected according to the specific arrangement relationship, here take two steering shafts as an example); The steering wheel torque angle sensor 2 is arranged under the steering wheel 1, and is used to collect the torque and angle signals of the steering wheel 1 in real time; the main booster motor 8 and the auxili...

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PUM

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Abstract

The invention discloses a dual-motor electric power steering system and a power steering method thereof. In the steering system, the main power motor and the auxiliary power motor are connected through a one-way clutch assembly; The steering shaft is connected in parallel through a torque coupler, and the output end of the torque coupler is connected to the steering gear; the output shaft of the one-way clutch assembly is connected to the torque coupler through a reducer, an overload protector, and a normally closed electromagnetic clutch; the steering wheel torque angle sensor The output end of the main booster motor, the control end of the auxiliary booster motor and the control end of the normally closed electromagnetic clutch are connected to the control unit. According to the vehicle speed signal and the steering wheel angle torque signal, the present invention controls a single booster motor or two booster motors to simultaneously output torque through a control unit to meet the needs of commercial vehicles. It meets the demand for large boost torque, improves the fuel economy of commercial vehicles, and reduces operating costs.

Description

[0001] 【Technical field】 [0002] The invention relates to the technical field of power steering, in particular to an electric power steering system and a power steering method thereof. [0003] 【Background technique】 [0004] The existing electric power steering system has high safety and reliability, 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 steering assistance for commercial vehicles. Currently, the application field is still limited to passenger cars or light commercial vehicles. [0005] 【Content of invention】 [0006] The purpose of the present invention is to provide a dual-motor electric power steering system and its po...

Claims

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Application Information

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