JPH04191509A - Stroke detection device for cylinder device - Google Patents
Stroke detection device for cylinder deviceInfo
- Publication number
- JPH04191509A JPH04191509A JP32211990A JP32211990A JPH04191509A JP H04191509 A JPH04191509 A JP H04191509A JP 32211990 A JP32211990 A JP 32211990A JP 32211990 A JP32211990 A JP 32211990A JP H04191509 A JPH04191509 A JP H04191509A
- Authority
- JP
- Japan
- Prior art keywords
- driving coil
- amolphous
- wire
- coil
- longitudinal
- 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
- 230000000694 effects Effects 0.000 abstract 1
- 230000000644 propagated Effects 0.000 abstract 1
Abstract
PURPOSE: To reduce noises effectively and improve reliability of a device by positioning an end of a magnetostrictive line housed in a fine and long tube at a longitudinally intermediate position of a driving coil.
CONSTITUTION: An end 21A of an amolphous wire 21 is positioned at an intermediate part in a longitudinal direction of a driving coil 15. When a pulse current is applied to the driving coil 15, a generated line of magnetic force shows the highest density at the intermediate part in the longitudinal direction of the driving coil 15. Supersonic wave is effectively generated on the amolphous wire by magnetostrictive effect. The supersonic wave is propagated from one end of the amolphous wire 21 positioned at the intermediate position in a longitudinal direction of the driving coil 15, that is, the end 21A on the side of the driving coil 15 in the direction to a detection coil 17. When the supersonic wave passes a magnetized portion 21C of the amolphous wire 21, a detection signal is output from a detection coil 17 with certainty.
COPYRIGHT: (C)1992,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32211990A JPH04191509A (en) | 1990-11-26 | 1990-11-26 | Stroke detection device for cylinder device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32211990A JPH04191509A (en) | 1990-11-26 | 1990-11-26 | Stroke detection device for cylinder device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04191509A true JPH04191509A (en) | 1992-07-09 |
Family
ID=18140138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32211990A Pending JPH04191509A (en) | 1990-11-26 | 1990-11-26 | Stroke detection device for cylinder device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04191509A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100744627B1 (en) * | 2005-06-20 | 2007-08-01 | 에스엠시 가부시키가이샤 | Fluid pressure cylinder with position detecting device |
| CZ301606B6 (en) * | 2004-10-25 | 2010-04-28 | Iqi S.R.O. | Method of controlling an electric motor with oscillating output shaft, particularly for automobile wiper systems, and the arrangement of that electric motor |
| JP2011158027A (en) * | 2010-02-01 | 2011-08-18 | Santest Co Ltd | Fluid pressure actuator which can detect position and load |
-
1990
- 1990-11-26 JP JP32211990A patent/JPH04191509A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ301606B6 (en) * | 2004-10-25 | 2010-04-28 | Iqi S.R.O. | Method of controlling an electric motor with oscillating output shaft, particularly for automobile wiper systems, and the arrangement of that electric motor |
| KR100744627B1 (en) * | 2005-06-20 | 2007-08-01 | 에스엠시 가부시키가이샤 | Fluid pressure cylinder with position detecting device |
| JP2011158027A (en) * | 2010-02-01 | 2011-08-18 | Santest Co Ltd | Fluid pressure actuator which can detect position and load |
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