Invention Grant
- Patent Title: Relative angle detection apparatus and electric power steering apparatus
- Patent Title (中): 相对角度检测装置和电动助力转向装置
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Application No.: US14380626Application Date: 2012-10-30
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Publication No.: US09581633B2Publication Date: 2017-02-28
- Inventor: Hiroyuki Muto
- Applicant: Showa Corporation
- Applicant Address: JP Gyoda-Shi
- Assignee: SHOWA CORPORATION
- Current Assignee: SHOWA CORPORATION
- Current Assignee Address: JP Gyoda-Shi
- Agency: Leason Ellis LLP
- Priority: JP2012-082734 20120330
- International Application: PCT/JP2012/077946 WO 20121030
- International Announcement: WO2013/145400 WO 20131003
- Main IPC: G01R31/02
- IPC: G01R31/02 ; B62D6/10 ; G01L11/02 ; G01L25/00 ; G01M13/02 ; G01L3/10 ; B62D5/04 ; G01B7/30 ; G01D5/14 ; G01D5/245
Abstract:
A relative angle detection apparatus includes a first magnetometric sensor and a first voltage amplifier that output a signal corresponding to a relative rotation angle between a first rotation shaft and a second rotation shaft; a first amplifier circuit that amplifies the output signal of the first voltage amplifier; a second magnetometric sensor and a second voltage amplifier that output a signal that corresponds to the relative rotation angle; a second amplifier circuit that amplifies the output signal of the second voltage amplifier; a first resistor that is provided between the first amplifier circuit and a power supply terminal, or between the first amplifier circuit and a GND terminal; and a second resistor that is provided between the second amplifier circuit and the power supply terminal, or between the second amplifier circuit and the GND terminal.
Public/Granted literature
- US20150015270A1 RELATIVE ANGLE DETECTION APPARATUS AND ELECTRIC POWER STEERING APPARATUS Public/Granted day:2015-01-15
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