JPS55113956A - Motor rotating speed detecting system - Google Patents
Motor rotating speed detecting systemInfo
- Publication number
- JPS55113956A JPS55113956A JP2049979A JP2049979A JPS55113956A JP S55113956 A JPS55113956 A JP S55113956A JP 2049979 A JP2049979 A JP 2049979A JP 2049979 A JP2049979 A JP 2049979A JP S55113956 A JPS55113956 A JP S55113956A
- Authority
- JP
- Japan
- Prior art keywords
- motor
- rotating speed
- detect
- armature
- detecting system
- 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
Landscapes
- Linear Or Angular Velocity Measurement And Their Indicating Devices (AREA)
Abstract
PURPOSE: To detect the rotating speed of a motor by utilizing the variations of an armature current instantaneously produced upon shorting of the commutator of the motor by a brush.
CONSTITUTION: An electric current is applied through brushes B1, B2 of a DC motor 1 to a commutator S. When commutator pieces S1, S2 are shorted by the brush B1 while the motor 1 is rotating, a current flowing through an armature M varies. This variations in the current is picked up as a voltage change across a resistor R connected in series with the armature M to detect it as number per unit time so as to detect the rotating speed of the motor.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2049979A JPS55113956A (en) | 1979-02-23 | 1979-02-23 | Motor rotating speed detecting system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2049979A JPS55113956A (en) | 1979-02-23 | 1979-02-23 | Motor rotating speed detecting system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55113956A true JPS55113956A (en) | 1980-09-02 |
Family
ID=12028847
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2049979A Pending JPS55113956A (en) | 1979-02-23 | 1979-02-23 | Motor rotating speed detecting system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55113956A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3210134A1 (en) * | 1982-03-19 | 1983-09-29 | SGS-ATES Deutschland Halbleiter Bauelemente GmbH, 8018 Grafing | METHOD FOR OBTAINING A SPEED-PROPORTIONAL SIZE FROM A DC MOTOR |
JPH07213610A (en) * | 1994-01-28 | 1995-08-15 | Shirota Denki Rozai Kk | Dental electric injector |
EP1324049A2 (en) * | 2001-12-18 | 2003-07-02 | Johnson Electric S.A. | Method of measuring motor speed |
-
1979
- 1979-02-23 JP JP2049979A patent/JPS55113956A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3210134A1 (en) * | 1982-03-19 | 1983-09-29 | SGS-ATES Deutschland Halbleiter Bauelemente GmbH, 8018 Grafing | METHOD FOR OBTAINING A SPEED-PROPORTIONAL SIZE FROM A DC MOTOR |
JPH07213610A (en) * | 1994-01-28 | 1995-08-15 | Shirota Denki Rozai Kk | Dental electric injector |
EP1324049A2 (en) * | 2001-12-18 | 2003-07-02 | Johnson Electric S.A. | Method of measuring motor speed |
EP1324049A3 (en) * | 2001-12-18 | 2004-05-26 | Johnson Electric S.A. | Method of measuring motor speed |
US6850023B2 (en) | 2001-12-18 | 2005-02-01 | Johnson Electrics S.A. | Method of measuring motor speed |
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