JPS568571A - Measuring method of air gap - Google Patents
Measuring method of air gapInfo
- Publication number
- JPS568571A JPS568571A JP8347779A JP8347779A JPS568571A JP S568571 A JPS568571 A JP S568571A JP 8347779 A JP8347779 A JP 8347779A JP 8347779 A JP8347779 A JP 8347779A JP S568571 A JPS568571 A JP S568571A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic flux
- air gap
- induced voltage
- coil
- gap
- 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
- 230000004907 flux Effects 0.000 abstract 4
- 230000002411 adverse Effects 0.000 abstract 1
- 230000003321 amplification Effects 0.000 abstract 1
- 230000007423 decrease Effects 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
Landscapes
- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
Abstract
PURPOSE: To realize an accurate measurement from outside for the value of the air gap and then ensure the steady characteristics along with enhancement of the quality, by determining the test current for each machine type in the rotary motor and then producing the relation line chart between the air gap and the induced voltage.
CONSTITUTION: Search coil 5 is put at the outer circumference of motor 1 to be measured, and the induced voltage at coil 5 is led into millivoltmeter 6 having a high amplification factor. In this case, leak magnetic flux ϕ increases and decreases in proportion to main magnetic flux ϕ'. When the winding current of stator 2 is made constant, the magnetizing force becomes constant. And magnetic flux ϕ of that moment is adversely proportional to the value of air gap G, thus gap G can be measured accurately. Then the outer diameter of rotor 3 is changed to vary gap G, and the induced voltage caused by magnetic flux ϕ detected by coil 5 is measured when the constant current is flowed. Thus the relation line chart is produced.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8347779A JPS568571A (en) | 1979-07-03 | 1979-07-03 | Measuring method of air gap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8347779A JPS568571A (en) | 1979-07-03 | 1979-07-03 | Measuring method of air gap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS568571A true JPS568571A (en) | 1981-01-28 |
Family
ID=13803535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8347779A Pending JPS568571A (en) | 1979-07-03 | 1979-07-03 | Measuring method of air gap |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS568571A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61120073A (en) * | 1984-11-15 | 1986-06-07 | Fujitec Co Ltd | Detecting method of magnetic flux of induction motor |
-
1979
- 1979-07-03 JP JP8347779A patent/JPS568571A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61120073A (en) * | 1984-11-15 | 1986-06-07 | Fujitec Co Ltd | Detecting method of magnetic flux of induction motor |
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