JPS54142515A - Voice coil motor driving system - Google Patents
Voice coil motor driving systemInfo
- Publication number
- JPS54142515A JPS54142515A JP5041578A JP5041578A JPS54142515A JP S54142515 A JPS54142515 A JP S54142515A JP 5041578 A JP5041578 A JP 5041578A JP 5041578 A JP5041578 A JP 5041578A JP S54142515 A JPS54142515 A JP S54142515A
- Authority
- JP
- Japan
- Prior art keywords
- time
- coil
- driving
- movement
- bobbin
- 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
- Control Of Linear Motors (AREA)
Abstract
PURPOSE: To shorten the time in straight movement of the coil by changing the length in interlinkage thereof with magnetic flux according to the movement distance thereof.
CONSTITUTION: A bobbin BOB has an internal iron core inserted thereinto and is surrounded by a magnetic pole 4 thereoutside. Permanent magnets NS are arranged outside the magnetic pole 4 with a yoke serving as a magnetic bypass. If the winding lengths of a coil 1a and a coil 1b are respectively expressed by 1a and 1bm1a < 1b is established. Therefore, when the movement time of the bobbin BOB is long, the movement distance Xa thereof is longer at the time of driving the coil 1a than that Xb at the time of driving the coil 1b. The movement velocity thereof is also greater at the time of driving the coil 1a. Hence, the movement time Ta is shorter at the time of driving the coil 1a than that Tb at the time of driving the coil 1b. Meanwhile, when the movement time thereof is short, the movement time of the bobbin is shorter at the time of driving the coil 1b than that at the time of driving the coil 1a.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5041578A JPS54142515A (en) | 1978-04-27 | 1978-04-27 | Voice coil motor driving system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5041578A JPS54142515A (en) | 1978-04-27 | 1978-04-27 | Voice coil motor driving system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS54142515A true JPS54142515A (en) | 1979-11-06 |
Family
ID=12858223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5041578A Pending JPS54142515A (en) | 1978-04-27 | 1978-04-27 | Voice coil motor driving system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54142515A (en) |
-
1978
- 1978-04-27 JP JP5041578A patent/JPS54142515A/en active Pending
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