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Dual-motor electric power-assisted steering system based on parallel axis structure 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 that cannot meet the needs of commercial vehicles, the output torque of the electric power steering system is too small, etc., and achieve improvement Effects of fuel economy, increasing output torque, and reducing motor speed

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

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a dual-motor electric power steering system based on a parallel shaft structure and its method in order to solve the problem that the output torque of the electric power steering system is too small to meet the needs of commercial use. The question of car needs

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  • Dual-motor electric power-assisted steering system based on parallel axis structure and method thereof
  • Dual-motor electric power-assisted steering system based on parallel axis structure and method thereof
  • Dual-motor electric power-assisted steering system based on parallel axis structure and method thereof

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Embodiment Construction

[0031] 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, and 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 a limitation of 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 explicit...

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Abstract

The invention discloses a dual-motor electric power-assisted steering system based on a parallel axis structure and a method thereof. A main motor and an auxiliary motor in the system are connected toa middle shaft through a main motor gear and an auxiliary motor gear; an output end of the middle shaft is connected with a second steering shaft in parallel through a torque coupling; an output endof the torque coupling is connected with a steering gear; an output end of a steering plate torque corner sensor, a control end of the main motor, a control end of the auxiliary motor, a control end of a first electromagnetic clutch and a control end of the second electromagnetic clutch are connected with a controller. By arranging two power-assisted motors connected through the parallel axis structure, 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 platetorque signal, 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 systems, and in particular relates to a dual-motor electric power steering system based on a parallel shaft structure 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 syste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
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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