JPS5595306A - Plunger solenoid - Google Patents
Plunger solenoidInfo
- Publication number
- JPS5595306A JPS5595306A JP189379A JP189379A JPS5595306A JP S5595306 A JPS5595306 A JP S5595306A JP 189379 A JP189379 A JP 189379A JP 189379 A JP189379 A JP 189379A JP S5595306 A JPS5595306 A JP S5595306A
- Authority
- JP
- Japan
- Prior art keywords
- coil
- core
- force
- moving core
- permanent magnet
- 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
Abstract
PURPOSE: To provide the control function for the absorption speed of a moving core by a method wherein a permanent magnet is equipped in a portion of the moving core, detects the traveling speed of the core by measuring the variation of flux density, and dynamically feeds back the results to a control coil.
CONSTITUTION: When a driving coil 3 is excited, a moving core 2 is absorbed by the magnetomotive force in the direction shown by an arrow mark. At the same time an electromotive force is generated in a speed detecting coil 7 according to the motion of a permanent magnet 6. This electromotive force is amplified by an amplifier 9, transmitted to a controlling amplifier 10 and generates a controlled coil-driving signal to excite a coil 5. The mangetomotive force induced in the coil 5 is an antiphase vector, its phase is shifted by 180° from that of the exciting coil 3, and backward excites excessively and instantaneously to absorb the core 2 to the set up position. By this way, the absorption force toward the core 2 can be partially and voluntarily controlled during the time from start to end of its absorbing action. When this method is adopted, the touch pressure condition of a piano can be mechanically set up.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP189379A JPS5595306A (en) | 1979-01-11 | 1979-01-11 | Plunger solenoid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP189379A JPS5595306A (en) | 1979-01-11 | 1979-01-11 | Plunger solenoid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5595306A true JPS5595306A (en) | 1980-07-19 |
Family
ID=11514252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP189379A Pending JPS5595306A (en) | 1979-01-11 | 1979-01-11 | Plunger solenoid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5595306A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0727577A1 (en) * | 1995-02-17 | 1996-08-21 | INDUSTRIE MAGNETI MARELLI S.p.A. | A device for the electronic control of a coupling electromagnet, particularly for a starter motor |
| EP0727667A1 (en) * | 1995-02-17 | 1996-08-21 | INDUSTRIE MAGNETI MARELLI S.p.A. | A sensor device for the electronic control of a coupling electromagnet, in particular for a starter motor |
| DE10310963A1 (en) * | 2003-03-13 | 2004-09-23 | Bayerische Motoren Werke Ag | Coil construction for electromagnetic actuator for operation of IC engine valve, has measuring coil for measuring flux variations provided by actuator coil |
-
1979
- 1979-01-11 JP JP189379A patent/JPS5595306A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0727577A1 (en) * | 1995-02-17 | 1996-08-21 | INDUSTRIE MAGNETI MARELLI S.p.A. | A device for the electronic control of a coupling electromagnet, particularly for a starter motor |
| EP0727667A1 (en) * | 1995-02-17 | 1996-08-21 | INDUSTRIE MAGNETI MARELLI S.p.A. | A sensor device for the electronic control of a coupling electromagnet, in particular for a starter motor |
| DE10310963A1 (en) * | 2003-03-13 | 2004-09-23 | Bayerische Motoren Werke Ag | Coil construction for electromagnetic actuator for operation of IC engine valve, has measuring coil for measuring flux variations provided by actuator coil |
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