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Electric power steering system, control method and vehicle

An electric power steering and control method technology, applied in the field of vehicles, can solve problems such as affecting the steering feel, and achieve the effect of improving the steering feel

Active Publication Date: 2018-10-19
BAIC MOTOR CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the current electric power steering system has a friction compensation function, due to differences in component manufacturing and vehicle assembly, different vehicles have different friction resistance torques, and the same friction compensation curve may not match on different vehicles, which affects the steering feel.

Method used

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  • Electric power steering system, control method and vehicle
  • Electric power steering system, control method and vehicle
  • Electric power steering system, control method and vehicle

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Embodiment Construction

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the following will clearly and completely describe the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention. Apparently, the described embodiments are some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention belong to the protection scope of the present invention.

[0037] The present invention is an invention made by the inventors of the present application based on the following facts.

[0038] Such as figure 1 As shown, the electric power steering system in the prior art is mainly composed of a basic power assist module 1, a centering compensation module 2, an inertia compensation module 3, a damping compensation module 4, a friction compensation m...

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PUM

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Abstract

The invention provides an electric power steering system, a control method and a vehicle. The electric power steering system comprises a torque sensor, a friction compensation module and a motor control module, wherein the torque sensor is used for detecting a frictional resisting moment of the vehicle; the friction compensation module obtains an original friction compensation moment, calculates afriction compensation correction coefficient Kf' of the vehicle according to the original friction compensation moment and the frictional resisting moment detected by the torque sensor and calculatesa friction compensation current; and the motor control module compensates the current according to the friction compensation current and performs power steering control. According to the electric power steering system, the frictional resisting moment of the vehicle is measured by using the torque sensor, and the friction compensation current of the vehicle is calculated by using the friction compensation module according to the frictional resisting moment, differentiated friction compensation output is realized, and the steering hand feel is improved.

Description

technical field [0001] The present invention relates to the field of vehicles, and more specifically, to an electric power steering system, a control method, and a vehicle. Background technique [0002] Electric power steering systems are widely used due to factors such as compact structure, energy saving and emission reduction, and rich tuning functions. Although the current electric power steering system has a friction compensation function, due to differences in component manufacturing and vehicle assembly, different vehicles have different friction resistance torques. The same friction compensation curve may not match on different vehicles, which affects the steering feel. Contents of the invention [0003] In view of this, the present invention provides an electric power steering system. [0004] The invention also provides a vehicle with the electric power steering system. [0005] The invention also provides an electric power steering control method. [0006] In ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/04B62D6/00B62D101/00B62D113/00B62D117/00B62D119/00B62D137/00
CPCB62D5/046B62D6/00
Inventor 李雷
Owner BAIC MOTOR CORP LTD
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