Electric power steering system with individually adjustable-parameter and curve-type power characteristic

An electric power steering, adjustable technology, applied in electric steering mechanism, automatic steering control components, steering mechanism and other directions, can solve the problems of cumbersome calibration process, inability to distinguish between high and low areas, simple curve equations, etc., to shorten the debugging time, Optimized steering assist performance, physically meaningful effects
CN101722980BInactive Publication Date: 2012-01-04LIANCHUANG AUTOMOBILE ELECTRONICS
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
LIANCHUANG AUTOMOBILE ELECTRONICS
Publication Date
2012-01-04
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention provides an electric power steering system with an individually adjustable-parameter and curve-type power characteristic. The system is characterized in that: the power characteristic curve is a segmentation curve which is symmetric about the centre of a zero input moment point; an integral curve can be determined by setting 5 key parameter values on the curve, and, when one or morekey parameters are regulated, the integrity of the curve and the continuity of the first-order derivative can still be guaranteed without modifying other parameters. The power characteristic of the electric power steering system provided by the invention can change the shape of the curve by adjusting 5 of the key parameter values to achieve different assisting effects, so the electric power steering system has the optimum steering performance which is expected by drivers.
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Description

technical field

[0001] The invention belongs to the technical field of automobiles, and relates to an electric power steering system, in particular to an electric power steering system (Electric PowerSteering System, EPS for short) with independently adjustable curve power characteristics. Background technique

[0002] Electric power steering system is composed of traditional mechanical steering system (mainly including steering wheel, steering shaft, steering gear, steering rod mechanism, steering wheel) with torque sensor, electronic control unit, power steering motor and its 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 basi...

Claims

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