JPS6416921A - Rotational angle detector - Google Patents
Rotational angle detectorInfo
- Publication number
- JPS6416921A JPS6416921A JP17326087A JP17326087A JPS6416921A JP S6416921 A JPS6416921 A JP S6416921A JP 17326087 A JP17326087 A JP 17326087A JP 17326087 A JP17326087 A JP 17326087A JP S6416921 A JPS6416921 A JP S6416921A
- Authority
- JP
- Japan
- Prior art keywords
- teeth
- magneto
- detecting
- rotor
- initial position
- 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
Links
Abstract
PURPOSE:To preclude misdetection due to dust by providing a rotor where some teeth are formed longer than other teeth, two magneto-resistance elements for detecting the quantity of rotation, etc., and one magneto-resistance element for detecting an initial position. CONSTITUTION:The rotor 14 has some teeth 26 formed longer than other teeth 15 and is made of a magnetic material. A sensor unit 17, on the other hand, consists of a couple of two magneto-resistance elements 18 and 18a for detecting the quantity of rotation, etc., one magneto-resistance element 18b for detecting the initial position, a magnet 20 for producing a magnetic field, and pulse generating circuits 19, 19a, and 19b for generating pulses from the detection signals of the respective elements 18, 18a, and 18b. Then when the rotor 14 passes in a constant magnetic field produced by the magnet 20, the variation of the magnetic field caused by the teeth 15 is detected by the elements 18 and 18a and converted by the circuit 19 and 19a into pulse signals, which are sent to a controller to detect the quantity of rotation, etc. Further, the initial position is detected through the teeth 26, element 18b, and circuit 19b.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17326087A JPS6416921A (en) | 1987-07-10 | 1987-07-10 | Rotational angle detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17326087A JPS6416921A (en) | 1987-07-10 | 1987-07-10 | Rotational angle detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6416921A true JPS6416921A (en) | 1989-01-20 |
Family
ID=15957152
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17326087A Pending JPS6416921A (en) | 1987-07-10 | 1987-07-10 | Rotational angle detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6416921A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0378618A (en) * | 1989-08-22 | 1991-04-03 | Matsushita Electric Ind Co Ltd | Electromagnetic induction type rotary encoder |
JPH04335111A (en) * | 1991-05-10 | 1992-11-24 | Fanuc Ltd | Magnetoresistance type rotation detector |
JP2010237082A (en) * | 2009-03-31 | 2010-10-21 | Hitachi Cable Ltd | Torque-index sensor |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5558402A (en) * | 1978-10-25 | 1980-05-01 | Nippon Soken Inc | Position detector |
JPS5667709A (en) * | 1979-11-08 | 1981-06-08 | Matsushita Electric Ind Co Ltd | Turning-angle detector |
-
1987
- 1987-07-10 JP JP17326087A patent/JPS6416921A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5558402A (en) * | 1978-10-25 | 1980-05-01 | Nippon Soken Inc | Position detector |
JPS5667709A (en) * | 1979-11-08 | 1981-06-08 | Matsushita Electric Ind Co Ltd | Turning-angle detector |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0378618A (en) * | 1989-08-22 | 1991-04-03 | Matsushita Electric Ind Co Ltd | Electromagnetic induction type rotary encoder |
JPH04335111A (en) * | 1991-05-10 | 1992-11-24 | Fanuc Ltd | Magnetoresistance type rotation detector |
JP2010237082A (en) * | 2009-03-31 | 2010-10-21 | Hitachi Cable Ltd | Torque-index sensor |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0997705A2 (en) | A Hall-voltage slope-activated sensor | |
EP0357013A3 (en) | Magnetic field measuring circuit | |
EP0056303A3 (en) | Angular position sensor | |
EP0806673A3 (en) | Apparatus for detecting the speed of a rotating element | |
JPS5672316A (en) | Rubbing position identifier | |
ATE410309T1 (en) | DEVICE AND METHOD FOR ENGINE CONTROL | |
GB1245954A (en) | Device for the detection of the rotational motion of a shaft | |
JPS6423107A (en) | Position detection apparatus and method | |
JPS6416921A (en) | Rotational angle detector | |
JPS6416923A (en) | Rotational angle detector | |
JPS6416920A (en) | Rotational angle detector | |
JPS6416919A (en) | Rotational angle detector | |
JPS5692422A (en) | Detecting device for oscillation of turbine-driven generator | |
JPS6416922A (en) | Rotational angle detector | |
JPS6416918A (en) | Rotational angle detector | |
JPS646763A (en) | Rotational speed detector | |
DE59303887D1 (en) | MEASURING ARRANGEMENT FOR CONTINUOUS SPEED DETECTION | |
JPS6426164A (en) | Speed detecting device | |
JPS5468666A (en) | Potating angle detector | |
JPS564010A (en) | Pipe detector | |
JPS55147309A (en) | Position detector | |
JPS5315872A (en) | Dew detector | |
JPS5651610A (en) | Detector for rotation position | |
JPS51114971A (en) | Rotary pulse generator | |
JPS57147150A (en) | Tape end detecting system |