Invention Grant
US08260500B2 Electric power steering apparatus, control method thereof and computer readable medium
有权
电动助力转向装置及其控制方法和计算机可读介质
- Patent Title: Electric power steering apparatus, control method thereof and computer readable medium
- Patent Title (中): 电动助力转向装置及其控制方法和计算机可读介质
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Application No.: US12565271Application Date: 2009-09-23
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Publication No.: US08260500B2Publication Date: 2012-09-04
- Inventor: Hideyuki Murakami
- Applicant: Hideyuki Murakami
- Applicant Address: JP Saitama
- Assignee: Showa Corporation
- Current Assignee: Showa Corporation
- Current Assignee Address: JP Saitama
- Agency: Morgan, Lewis & Bockius LLP
- Priority: JP2009-039754 20090223; JP2009-045285 20090227; JP2009-085705 20090331
- Main IPC: B62D5/04
- IPC: B62D5/04

Abstract:
The electric power steering apparatus is provided with: a steering torque detector that detects steering torque of a steering wheel; an electric motor that applies steering assist force to the steering wheel; a current detector that detects an actual current actually supplied to the electric motor; a target current setting unit that sets a target current to be supplied to the electric motor, on the basis of the steering torque detected by the steering torque detector; a feedback controller that performs feedback control so that the target current and the actual current coincide with each other; and a feedforward controller that performs feedforward control for increasing the actual current detected by the current detector if the target current increases, the feedforward controller including a frequency compensator that provides a smaller amount of increase in the actual current as a frequency of a variation in the target current is lower.
Public/Granted literature
- US20100217487A1 ELECTRIC POWER STEERING APPARATUS, CONTROL METHOD THEREOF AND COMPUTER READABLE MEDIUM Public/Granted day:2010-08-26
Information query
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