JPS568575A - Magnetism tester - Google Patents
Magnetism testerInfo
- Publication number
- JPS568575A JPS568575A JP8569579A JP8569579A JPS568575A JP S568575 A JPS568575 A JP S568575A JP 8569579 A JP8569579 A JP 8569579A JP 8569579 A JP8569579 A JP 8569579A JP S568575 A JPS568575 A JP S568575A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic flux
- coil
- phase
- induced voltage
- coils
- 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
- Measuring Magnetic Variables (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
PURPOSE: To increase the accuracy for the magnetism test, by providing the device which gives correction to the magnetic flux distribution and thus ensure a uniform magnetic flux distribution within the material to be tested.
CONSTITUTION: Coil 8 detects the magnetic flux density at the center of exciting coil 2; and coils 9a and 9b detect the magnetic flux density at the end part of coil 2. The difference is detected 12 between the phase of the induced voltage of coil 8 corresponding to the phase of the main magnetic flux and the phase of the induced voltage of coils 9a and 9b each corresponding to the phase of the corrected magnetic flux. Then the detection output is applied to phase control circuit 13 to carry out the phase control for the induced voltage of coil 8 the voltage level of which is controlled through magnetic flux control circuit 11, and then applied to correcting coil 14 after amplification 15. Accordingly, the phase difference is eliminated between the main and corrected magnetic flux to realize a uniform magnetic flux distiribution within material 5 to be tested. As a result, a high-accuracy magnetism test is possible for many types of material 5 by one unit of test coil 1.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8569579A JPS568575A (en) | 1979-07-03 | 1979-07-03 | Magnetism tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8569579A JPS568575A (en) | 1979-07-03 | 1979-07-03 | Magnetism tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS568575A true JPS568575A (en) | 1981-01-28 |
Family
ID=13865959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8569579A Pending JPS568575A (en) | 1979-07-03 | 1979-07-03 | Magnetism tester |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS568575A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6337045A (en) * | 1986-08-01 | 1988-02-17 | Shinko Electric Co Ltd | Vacuum suction device |
| JPS6341333A (en) * | 1986-08-04 | 1988-02-22 | Shinko Electric Co Ltd | Vacuum attracting device |
| DE10216173A1 (en) * | 2002-04-12 | 2003-10-30 | Bosch Rexroth Ag | Testing magnetic coil involves determining magnetic flux within coil for defined electrical current flowing through coil using magnetic flux sensitive element; flux in radial center of coil is determined |
-
1979
- 1979-07-03 JP JP8569579A patent/JPS568575A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6337045A (en) * | 1986-08-01 | 1988-02-17 | Shinko Electric Co Ltd | Vacuum suction device |
| JPS6341333A (en) * | 1986-08-04 | 1988-02-22 | Shinko Electric Co Ltd | Vacuum attracting device |
| DE10216173A1 (en) * | 2002-04-12 | 2003-10-30 | Bosch Rexroth Ag | Testing magnetic coil involves determining magnetic flux within coil for defined electrical current flowing through coil using magnetic flux sensitive element; flux in radial center of coil is determined |
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