Electric automobile electric power steering (EPS) device and control method thereof

A technology for electric power steering and electric vehicles, which is applied to automatic steering control components, electric steering mechanisms, power steering mechanisms, etc., and can solve problems such as complex structure of power steering devices, sudden changes in power assistance, and poor reliability, and achieve compact structure and lighten the burden , the effect of small amount of wear

Pending Publication Date: 2017-06-27
LIAONING UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of complex structure and poor reliability of the existing power steering device, and provide an electric power steering device for electric vehicles
[0005] Another object of the present invention is to solve the defect that the sudden change in the power assist will cause a sense of frustration in the existing electric power assist control method, and to provide an electric power steering control method for electric vehicles

Method used

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  • Electric automobile electric power steering (EPS) device and control method thereof
  • Electric automobile electric power steering (EPS) device and control method thereof
  • Electric automobile electric power steering (EPS) device and control method thereof

Examples

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Embodiment Construction

[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

[0036] like figure 1 , figure 2 As shown, the present invention provides an electric power steering device for an electric vehicle, which includes a housing 110 and a steering rod 120 is arranged in the housing. The input shaft 130 is connected with the steering wheel, and the lower end of the input shaft 130 is provided with a gear 131 . A torque sensor is connected between the input shaft 130 and the steering wheel, and the torque of the steering wheel is measured by the torque sensor.

[0037] The steering rod 120 is provided with a rack 121, and the rack 121 meshes with the gear 131. When the steering wheel is turned, the steering wheel drives the input shaft 130 to rotate, and then the steering rod 120 is moved along the axis in the housing 110. Move left and right. ...

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PUM

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Abstract

The invention discloses an electric automobile electric power steering (EPS) device which comprises a shell, an input shaft, a steering rod, a ball nut and a drive motor. The input shaft is connected with a steering wheel, the lower end of the input shaft is provided with a gear, and the input shaft is connected with a torque sensor. The steering rod is arranged in the shell and provided with a rack which is engaged with the gear to enable the steering rod to move in the shell left and right. The left end and the right end of the steering rod are separately connected with a left steering ball head and a right steering ball head. The steering rod is further provided with a lead screw which is sleeved and matched with the ball nut. The two ends of the ball nut are supported on the shell through bearings. The drive motor is connected with the ball nut through a transmission device to drive the ball nut to rotate around the axis of the ball nut. The invention further provides an electric automobile EPS control method.

Description

technical field [0001] The invention belongs to the technical field of automobile steering mechanisms, and in particular relates to an electric power steering device and a control method for electric automobiles. Background technique [0002] Electric Power Steering (EPS for short) system is a new type of power steering system after the hydraulic power steering system. It has the incomparable advantages of the hydraulic power steering system. Conducive to environmental protection, it is a high-tech closely related to the development theme of modern automobiles, and it is an inevitable trend in the development of automobile steering systems. [0003] Compared with the traditional hydraulic power steering system, the electric power steering system has the following advantages: the oil pump of the hydraulic power steering system works even when it is not turning, which increases the energy consumption. The EPS system only provides power assistance when the motor is turning, so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D3/08B62D3/12B62D5/04B62D6/00B62D101/00B62D119/00
CPCB62D3/08B62D3/12B62D5/0421B62D5/0463B62D6/008
Inventor 段敏魏健楠
Owner LIAONING UNIVERSITY OF TECHNOLOGY
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