The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 26, 2009
Filed:
Mar. 17, 2006
Yuji Takatsuka, Hyogo, JP;
Yuji Takatsuka, Hyogo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
An electric power steering control includes a torque sensor for detecting steering torque as torque information, a motor for generating assist torque, a calculation section for calculating a motor current command value based on the torque information at each predetermined sampling period, and a motor current control section for driving and controlling the motor based on the motor current command value. The calculation section includes a first target current calculation section for calculating a first target current based on the torque information detected in a time series manner at a first control period corresponding to the sampling period, and a second target current calculation section for calculating a second target current based on the first target current at a second control period shorter than the first control period. The motor current control section controls the motor by using the second target current as the motor current command value.