JPS6454202A - Gap measuring method of magnetic materials - Google Patents
Gap measuring method of magnetic materialsInfo
- Publication number
- JPS6454202A JPS6454202A JP21089787A JP21089787A JPS6454202A JP S6454202 A JPS6454202 A JP S6454202A JP 21089787 A JP21089787 A JP 21089787A JP 21089787 A JP21089787 A JP 21089787A JP S6454202 A JPS6454202 A JP S6454202A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- gap
- secondary coil
- voltage
- magnetic flux
- 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.)
- Granted
Links
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
PURPOSE:To make it possible to measure the gap of magnetic materials with high accuracy, by detecting the quantity of the magnetic flux changing in accordance with the size of the gap between the magnetic materials by a secondary coil as a voltage value which value is in turn subjected to the operation for compensating for errors. CONSTITUTION:Magnetic cores 4 and 5 are tightly secured to the upper surface of a pressed work 2, so that a magnetic circuit is formed by a permanent magnet 3, the magnetic cores 4 and 5 and the passed work 2. The pressed work 2 comes in a saturated condition by a magnetic flux Z1 passing within the pressed work 2. In this state, when an oscillator 6 is operated to allow alternating current to flow to a primary coil 8, a magnetic flux Z2 of alternating current is generated. The magnetic flux Z2 of alternating current passes through the pressed work 2 into within a press mold 1, generating a magnetic induction voltage in a secondary coil 9. The voltage Vi generated in the secondary coil 9 is reduced by the increase of the magnetic resistance as the gap S becomes larger. Thereafter, the value of the voltage in the secondary coil 9 is subjected to the calculation for compensation for errors, and consequently the gap S can be measured with high accuracy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62210897A JP2580614B2 (en) | 1987-08-25 | 1987-08-25 | Apparatus and method for measuring gap between magnetic materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62210897A JP2580614B2 (en) | 1987-08-25 | 1987-08-25 | Apparatus and method for measuring gap between magnetic materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6454202A true JPS6454202A (en) | 1989-03-01 |
| JP2580614B2 JP2580614B2 (en) | 1997-02-12 |
Family
ID=16596889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62210897A Expired - Lifetime JP2580614B2 (en) | 1987-08-25 | 1987-08-25 | Apparatus and method for measuring gap between magnetic materials |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2580614B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61254803A (en) * | 1985-05-08 | 1986-11-12 | Toyota Motor Corp | Method for measuring clearance between magnetic material |
-
1987
- 1987-08-25 JP JP62210897A patent/JP2580614B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61254803A (en) * | 1985-05-08 | 1986-11-12 | Toyota Motor Corp | Method for measuring clearance between magnetic material |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2580614B2 (en) | 1997-02-12 |
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