JPS55487A - Speed detector for miniature dc electric motor - Google Patents
Speed detector for miniature dc electric motorInfo
- Publication number
- JPS55487A JPS55487A JP5211079A JP5211079A JPS55487A JP S55487 A JPS55487 A JP S55487A JP 5211079 A JP5211079 A JP 5211079A JP 5211079 A JP5211079 A JP 5211079A JP S55487 A JPS55487 A JP S55487A
- Authority
- JP
- Japan
- Prior art keywords
- twice
- armature
- speed
- miniature
- armature core
- 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)
- Control Of Electric Motors In General (AREA)
Abstract
PURPOSE: To detect the speed stably with the use of a simple and small construction by detecting the leak magnetic flux through blades of the same or twice number as that of armature slots of a magnetic member which is made integral with an armature core.
CONSTITUTION: By the actions of the blades 6 of the number twice that of the slots of a magnetic material which are made integral with an armature core 8, the leak magnetic flux when the armature core 8 is rotating is amplified so that it is stabilized without influencing the reaction of a rotary armature 2. As a result, the speed signal waveforms, which are amplified in a frequency corresponding to the twice of the speed, are detected through the detecting coils 5a and 5b which are wound in opposite directions upon the N and S poles of a stator 1.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5211079A JPS55487A (en) | 1979-04-26 | 1979-04-26 | Speed detector for miniature dc electric motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5211079A JPS55487A (en) | 1979-04-26 | 1979-04-26 | Speed detector for miniature dc electric motor |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP49055875A Division JPS5749868B2 (en) | 1973-10-26 | 1974-05-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55487A true JPS55487A (en) | 1980-01-05 |
Family
ID=12905715
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5211079A Pending JPS55487A (en) | 1979-04-26 | 1979-04-26 | Speed detector for miniature dc electric motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55487A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63265546A (en) * | 1987-04-22 | 1988-11-02 | Anritsu Corp | Rotation detector for motor |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4919206B1 (en) * | 1968-11-13 | 1974-05-16 |
-
1979
- 1979-04-26 JP JP5211079A patent/JPS55487A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4919206B1 (en) * | 1968-11-13 | 1974-05-16 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63265546A (en) * | 1987-04-22 | 1988-11-02 | Anritsu Corp | Rotation detector for motor |
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