JPS5590860A - Rotation speed detector - Google Patents
Rotation speed detectorInfo
- Publication number
- JPS5590860A JPS5590860A JP16570978A JP16570978A JPS5590860A JP S5590860 A JPS5590860 A JP S5590860A JP 16570978 A JP16570978 A JP 16570978A JP 16570978 A JP16570978 A JP 16570978A JP S5590860 A JPS5590860 A JP S5590860A
- Authority
- JP
- Japan
- Prior art keywords
- revolution
- accuracy
- precision
- frequency
- pulses generated
- 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
- Linear Or Angular Velocity Measurement And Their Indicating Devices (AREA)
Abstract
PURPOSE: To obtain a rotational speed detector of excellent precision and accuracy by using two kinds of generators, that is, a frequency generator having a small number of pulses generated at one revolution, and a frequency generator having a large number of pulses generated at one revolution.
CONSTITUTION: To a spindle 9 there are bonded a first frequency generator FG1 of a type wherein its main object lines in accuracy and the number of pulses generated at one revolution is small, and a second FG2 of a type wherein the number of pulses generated at one revolution is amply large and its main object is precision. When the rotational outputs of the first FG1 and second FG2 are passed through first and second frequency discrimination circuit 3 and 4 converting the rotational outputs into DC signals, and supplied to a low-pass filter of a cut-off frequency fc1 and a high-pass filter 6 for a cut-off frequency fc2, and added in an addition circuit 7, the accuracy of the rotation detection can be detected by the first FG1 and the precision of the rotation detection can be detected by the second FG2. By this procedure, it is possible to obtain a rotation detector excellent in both precision and accuracy.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16570978A JPS5590860A (en) | 1978-12-29 | 1978-12-29 | Rotation speed detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16570978A JPS5590860A (en) | 1978-12-29 | 1978-12-29 | Rotation speed detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5590860A true JPS5590860A (en) | 1980-07-09 |
Family
ID=15817556
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16570978A Pending JPS5590860A (en) | 1978-12-29 | 1978-12-29 | Rotation speed detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5590860A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5984469U (en) * | 1982-11-29 | 1984-06-07 | 株式会社クボタ | Analog electronic governor rotation speed detection device |
-
1978
- 1978-12-29 JP JP16570978A patent/JPS5590860A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5984469U (en) * | 1982-11-29 | 1984-06-07 | 株式会社クボタ | Analog electronic governor rotation speed detection device |
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