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Electric power steering system with double-gradient smooth assist curves

A technology of electric power steering and power curve, which is applied in the direction of electric steering mechanism, automatic steering control components, steering mechanism, etc., to achieve the effect of smooth steering feel and smooth transition

Inactive Publication Date: 2012-07-04
LIANCHUANG AUTOMOBILE ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an electric power steering system with a double-slope smooth assist curve to improve the power assist characteristics of the existing electric power steering system

Method used

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  • Electric power steering system with double-gradient smooth assist curves
  • Electric power steering system with double-gradient smooth assist curves
  • Electric power steering system with double-gradient smooth assist curves

Examples

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Embodiment Construction

[0019] The electric power steering system with double slope smooth power assist curve of the present invention is an electric power steering system with double slope smooth power assist curve in the electronic control unit.

[0020] The electric power steering system includes: a mechanical steering system, a torque sensor, an electronic control unit, a power steering motor and a reduction mechanism thereof. Wherein, the torque sensor is installed on the steering shaft of the mechanical steering system to detect the driver's steering torque; the electronic control unit calculates the driving current value that needs to be provided to the power steering motor according to the current vehicle driving condition and the steering torque; The steering assist motor can be installed on the steering shaft or steering gear of the mechanical steering system, and provides the driver with assisting torque through the reduction mechanism. The control flow chart of the system is as follows ...

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PUM

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Abstract

The invention discloses an electric power steering system with double-gradient smooth assist curves, which is characterized in that an electronic control unit is provided with double-gradient smooth assist curves. By means of the double-gradient smooth power-assist curves, the electric power steering system has completely smooth assistance characteristics, and curve parameters can be independently calibrated according to different touch requirements of a small assistance area and a large assistance area. The electric power steering system has the advantages of smooth assistance, independent parameter function and easiness in adjustment, and expectations of drivers on steering touch can be better satisfied.

Description

technical field [0001] The present invention relates to an electric power steering system (Electric Power Steering, EPS for short), in particular to an electric power steering system with double-slope smooth power assist curves. Background technique [0002] The existing electric power steering system (EPS) is a traditional mechanical steering system (mainly including a steering wheel, a steering shaft, a steering gear, a steering rod mechanism, and a steering wheel) with a torque sensor, an electronic control unit, a power steering motor and its Composition of reduction mechanism. Among them, the torque sensor is installed on the steering shaft to detect the driver's manipulation torque; the power assist motor can be installed on the steering shaft or the steering gear, and provides power assist torque to the driver through the reduction mechanism; the torque sensor signal and the vehicle speed sensor signal are input to the electronic control unit The basic booster contro...

Claims

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Application Information

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IPC IPC(8): B62D5/04B62D6/02
Inventor 郑鸿云罗旋
Owner LIANCHUANG AUTOMOBILE ELECTRONICS
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