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Electric power steering system

A technology of electric power steering and steering column, which is applied to electric steering mechanism, automatic steering control components, steering mechanism and other directions to achieve the effect of simple control method, low cost and little interference

Active Publication Date: 2013-05-01
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the technical problems existing in the existing steering system, the present invention provides a column type electric power steering system

Method used

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  • Electric power steering system

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Embodiment Construction

[0007] combine figure 1 The electric power steering system includes a steering wheel 13 and an upper main shaft 11 coaxially connected with the steering wheel 13. The upper and lower main shafts 11, 12 are supported and rotated by the steering column 10. The first electromagnetic clutch 20 is connected to the upper and lower shafts in the steering column 10. Between the lower main shafts 11 and 12, the first electromagnetic clutch 20 receives the control signal output by the electric power steering system controller 30 and engages. When the first electromagnetic clutch 20 is engaged, the upper and lower main shafts 11 and 12 synchronize the shafts; the steering column A torque sensor 40 is arranged between 10 and the upper main shaft 11; the electric power steering system controller 30 outputs a control signal to the power assist mechanism to drive the lower main shaft 12 in the steering column 10 to rotate. The engaging state of the above-mentioned first electromagnetic clutc...

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Abstract

The invention relates to the field of motor steering, and in particular to a column-type electric power steering system. A first electromagnetic clutch is connected between an upper main shaft and a lower main shaft in a steering column and is closed after receiving a control signal which is output by an electric power steering system controller, and the upper and lower main shafts are synchronous shafts when the first electromagnetic clutch is closed; a torque sensor is arranged between the steering column and the upper main shaft; and the electric power steering system controller outputs the control signal to a power boosting mechanism so as to drive the lower main shaft in the steering column to rotate. The system is simple in structure and low in cost; the system is simple in control method and has high detection data reliability; and small interference and weaker attenuation are generated during a signal transmission process, and a better power boosting effect is obtained.

Description

technical field [0001] The invention relates to the field of automobile steering, in particular to a column type electric power steering system. Background technique [0002] The existing electric power steering column system includes a steering column, a torque sensor, a torque sensor circuit board microcontroller, a servo motor, and a control module. The steering column includes an output shaft and an input shaft whose ends are connected together. There is a torsion bar connecting the two in the axial direction, the torque sensor circuit board single-chip microcomputer and the control module are arranged on the steering column, and the torque sensor is a magnetic induction non-contact torque sensor. However, the system has complex structure, high processing precision requirements, short service life, inconsistent output signals after long-term use, and the induced signal is greatly disturbed and attenuated during transmission, which affects the servo motor. Technical issu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/04B62D6/08
Inventor 袁朝春陈效华陈军
Owner CHERY AUTOMOBILE CO LTD
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