JPS63229321A - Rotation detector - Google Patents

Rotation detector

Info

Publication number
JPS63229321A
JPS63229321A JP6121887A JP6121887A JPS63229321A JP S63229321 A JPS63229321 A JP S63229321A JP 6121887 A JP6121887 A JP 6121887A JP 6121887 A JP6121887 A JP 6121887A JP S63229321 A JPS63229321 A JP S63229321A
Authority
JP
Japan
Prior art keywords
circuit
rotary position
time
change portion
square wave
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP6121887A
Other versions
JPH0781879B2 (en
Inventor
Kozo Kawada
Ryoichi Kurosawa
Original Assignee
Toshiba Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP6121887A priority Critical patent/JPH0781879B2/en
Priority claimed from EP88104278A external-priority patent/EP0285878B1/en
Publication of JPS63229321A publication Critical patent/JPS63229321A/en
Publication of JPH0781879B2 publication Critical patent/JPH0781879B2/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

Links

Abstract

PURPOSE: To obtain a rotary position without delay, by detecting the phase difference between the exciting and inducing signals of a synchronous motor and operating an estimated rotary position at a time at every definite cycle and further operating the change portion thereof.
CONSTITUTION: The clock pulse counted by a counter circuit 2 becomes a two- phase sine wave signal by a function circuit 3. Voltage having the phase corresponding to a rotary position is outputted from a secondary winding to be converted to a square wave by an FF circuit 7 and, at the rising of said square wave, the rotary position and the detection time are latched by a latch circuit 9, and the previous phase difference and detection time are transmitted to a latch circuit 11. A CPU 15 operates an estimated rotary position at a time at every definite cycle and further operates the change portion thereof to set rate input to a rate multiplier circuit 17. The output of the circuit 17 is counted by an U/D counter circuit 18 and the rotary position can be detected by a digital value on the basis of the count value of the circuit 18 without almost generating delay.
COPYRIGHT: (C)1988,JPO&Japio
JP6121887A 1987-03-18 1987-03-18 Rotation detecting device Expired - Lifetime JPH0781879B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6121887A JPH0781879B2 (en) 1987-03-18 1987-03-18 Rotation detecting device

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP6121887A JPH0781879B2 (en) 1987-03-18 1987-03-18 Rotation detecting device
EP88104278A EP0285878B1 (en) 1987-03-18 1988-03-17 Apparatus for detecting revolution using a synchro
DE8888104278A DE3860375D1 (en) 1987-03-18 1988-03-17 Rotary motion detector with a synchro.
KR8802865A KR910003518B1 (en) 1987-03-18 1988-03-18 Apparatus for detecting revolution using a synchronous electric machine
US07/169,977 US4837492A (en) 1987-03-18 1988-03-18 Apparatus for detecting revolution using a synchro

Publications (2)

Publication Number Publication Date
JPS63229321A true JPS63229321A (en) 1988-09-26
JPH0781879B2 JPH0781879B2 (en) 1995-09-06

Family

ID=13164842

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6121887A Expired - Lifetime JPH0781879B2 (en) 1987-03-18 1987-03-18 Rotation detecting device

Country Status (1)

Country Link
JP (1) JPH0781879B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006103730A1 (en) * 2005-03-28 2006-10-05 A & D Company, Ltd. Reference signal generator and method
WO2008053582A1 (en) * 2006-11-02 2008-05-08 Ntn Corporation Rotation detecting device, and bearing having rotation detecting device
JP2008116300A (en) * 2006-11-02 2008-05-22 Ntn Corp Rotation detector and bearing with the rotation detector
JP2008116292A (en) * 2006-11-02 2008-05-22 Ntn Corp Rotation detector and bearing with the rotation detector
JP2012165493A (en) * 2011-02-03 2012-08-30 Mitsubishi Heavy Ind Ltd Motor control device and motor control method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006103730A1 (en) * 2005-03-28 2006-10-05 A & D Company, Ltd. Reference signal generator and method
JPWO2006103730A1 (en) * 2005-03-28 2008-09-04 株式会社エー・アンド・デイ Reference signal generating apparatus and method
JP4533430B2 (en) * 2005-03-28 2010-09-01 株式会社エー・アンド・デイ Reference signal generating apparatus and method
US7844386B2 (en) 2005-03-28 2010-11-30 A & D Company, Ltd. Reference signal generator and method
WO2008053582A1 (en) * 2006-11-02 2008-05-08 Ntn Corporation Rotation detecting device, and bearing having rotation detecting device
JP2008116300A (en) * 2006-11-02 2008-05-22 Ntn Corp Rotation detector and bearing with the rotation detector
JP2008116292A (en) * 2006-11-02 2008-05-22 Ntn Corp Rotation detector and bearing with the rotation detector
JP2012165493A (en) * 2011-02-03 2012-08-30 Mitsubishi Heavy Ind Ltd Motor control device and motor control method

Also Published As

Publication number Publication date
JPH0781879B2 (en) 1995-09-06

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