Title:
MOTOR CONTROLLER AND ELECTRIC POWER STEERING DEVICE MOUNTED THEREWITH
Document Type and Number:
Japanese Patent JP2017154548
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a motor controller that compensates for a counter electromotive voltage and characteristics of a counter electromotive voltage compensation path through a feedback path without any variation in sensitivity to noise nor any delay over a wide range so as to securely let a real current follow up a current command value, and to provide an electric power steering device which improves a steering feeling.SOLUTION: A motor controller which performs driving control over a motor through current feedback control based upon a current command value and also performs compensation for a motor counter electromotive voltage with a counter electromotive voltage compensation signal based upon a motor angle or motor angular velocity is characterized in that a path for compensating for a motor counter electromotive voltage is provided with an LPF for noise elimination, and a feedback path of motor control is provided with an angle feedback filter which cancels a counter electromotive voltage compensation difference as a difference between the motor counter electromotive voltage and counter electromotive voltage compensation signal.SELECTED DRAWING: Figure 8
Inventors:
HOSHI YUZURU
SUEHIRO KANAME
SUEHIRO KANAME
Application Number:
JP2016037716A
Publication Date:
September 07, 2017
Filing Date:
February 29, 2016
Export Citation:
Assignee:
NSK LTD
International Classes:
B62D6/00; B62D5/04; H02P6/06
Attorney, Agent or Firm:
Yuzo Agata
Yoshiaki Kanno
Shinji Koga
Yoshiaki Kanno
Shinji Koga