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Dual-motor electric power-assisted steering system based on synchronizer, and method thereof

A technology of electric power steering and dual motors, which is applied in the direction of electric steering mechanism, mechanical steering mechanism, automatic steering control components, etc., can solve the problems of small output torque of electric power steering system and cannot meet the needs of commercial vehicles, etc., to improve fuel consumption Economical, guaranteed reliability, and reduced operating costs

Inactive Publication Date: 2019-06-21
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a synchronizer-based dual-motor electric power steering system and its method to solve the problem that the output torque of the electric power steering system is small and cannot meet the needs of commercial vehicles. demand problem

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  • Dual-motor electric power-assisted steering system based on synchronizer, and method thereof
  • Dual-motor electric power-assisted steering system based on synchronizer, and method thereof
  • Dual-motor electric power-assisted steering system based on synchronizer, and method thereof

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Embodiment Construction

[0035] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", "side", "end", "side" etc. is based on the Orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or i...

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Abstract

The invention discloses a dual-motor electric power-assisted steering system based on synchronizer, and a method thereof. A main motor and an auxiliary motor perform torque coupling through a shaft-fixed gear unit, and the coupled torque is output through a planet carrier through a planet gear unit; the planet carrier output shaft is connected with a second steering shaft in parallel through a torque coupler, the torque coupler outputs the torque to a steering device; and an output end of the steering plate torque corner sensor, a control end of the main motor, the control end of the auxiliarymotor, and the control end of the electromagnetic clutch are connected with a controller. By arranging two power-assisted motors connected through the planet gear unit and the shaft-fixed gear unit,the main motor is controlled to singly perform power assisting, or the main motor and the auxiliary motor commonly output the torque according to the vehicle speed signal and the steering plate torquesignal, the demand that the commercial vehicle needs large power-assisting torque is satisfied, the fuel economy of the commercial vehicle is improved, and the transportation cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of power steering, and in particular relates to a synchronizer-based dual-motor electric power steering system and a method thereof. Background technique [0002] The existing electric power steering system has high safety and reliability, and the steering characteristic curve is relatively 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 better. However, limited by factors such as the battery power supply voltage and installation size of the vehicle, the output torque of the electric power steering system is small, which cannot meet the requirements of commercial vehicle steering assistance. At present, the application field is still limited to passenger cars and light commercial vehicles. Therefore, from the perspective of fuel economy, the use of electric power steering system with large output torqu...

Claims

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Application Information

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IPC IPC(8): B62D5/04B62D5/02B62D6/00B62D101/00B62D103/00B62D119/00B62D137/00
Inventor 李耀华何杰南友飞冯乾隆张洋森
Owner CHANGAN UNIV
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