Title:
A control device which determines a parameter set as an electric power steering device and it
Document Type and Number:
Japanese Patent JP6249134
Kind Code:
B2
Abstract:
An object of the present invention is to provide an electric power steering apparatus that achieves a desired steering characteristic in minutely steering at on-center, suppresses frictional feeling, and improves linear steering feeling at on-center, and a control apparatus that determines a parameter. [Means for solving the problem] An electric power steering apparatus that calculates a current command value by using an assist map related to a steering torque and a vehicle speed, drives a motor based on the current command value, and assists and controls a steering system comprising a torsion bar in a column shaft, comprises a function of detecting steering angle information, and a SAT compensating-cum-virtual spring compensating section that calculates a SAT compensation-cum-virtual spring torque corresponding to the steering angle information based on the steering angle information and the vehicle speed and outputs a compensation signal to which the SAT compensation-cum-virtual spring torque is converted in accordance with a current conversion coefficient, compensates the current command value in accordance with the compensation signal, and gets a desired characteristic of on-center feeling.
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Inventors:
Takahiro Tsubaki
Application Number:
JP2017504933A
Publication Date:
December 20, 2017
Filing Date:
February 12, 2016
Export Citation:
Assignee:
Nippon Seiko Co., Ltd.
International Classes:
B62D6/00; B62D5/04
Domestic Patent References:
| JP2007314005A | ||||
| JP2008120343A |
Foreign References:
| WO2015025942A1 |
Attorney, Agent or Firm:
Yuzo Agata
Shinji Koga
Yoshiaki Kanno
Shinji Koga
Yoshiaki Kanno