JPS6457174A - Speed signal detector - Google Patents
Speed signal detectorInfo
- Publication number
- JPS6457174A JPS6457174A JP62214574A JP21457487A JPS6457174A JP S6457174 A JPS6457174 A JP S6457174A JP 62214574 A JP62214574 A JP 62214574A JP 21457487 A JP21457487 A JP 21457487A JP S6457174 A JPS6457174 A JP S6457174A
- Authority
- JP
- Japan
- Prior art keywords
- speed signal
- output
- signal
- pulse
- counter
- 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 Electric Motors In General (AREA)
Abstract
PURPOSE:To detect an accurate speed signal, by receiving the output signal of a rotary encoder (RE) only once as an interruption signal at every sampling time in a speed signal detector for detecting a speed signal at every definite sampling time. CONSTITUTION:A rotary direction is discriminated from the input of the output signals A, B of an RE 2 having 90 deg. phase difference by a signal processing circuit 3 inputting said signals A, B and the edges of the input of the signals A, B are converted to pulses and pulse trains (a), (b) are outputted to a counter 4 as moving quantities at every CW and CCW directions. The pulse trains (a), (b) are connected to the incremental and decremental terminals of the counter 4 and the rotary position of a motor 1 is detected on the basis of the count value. The output of the circuit 3 is also inputted to an OR circuit 5 to generate an output pulse C at every pulse edge of the RE 2. In a CPU 6, the pulse C is set to interruption input for obtaining an interruption signal and the output of the counter 4 is inputted from a data bus only once at every sampling time and a speed signal is calculated from the number of pulses and a time interval. Therefore, an accurate speed signal reduced in an error can be detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62214574A JPS6457174A (en) | 1987-08-27 | 1987-08-27 | Speed signal detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62214574A JPS6457174A (en) | 1987-08-27 | 1987-08-27 | Speed signal detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6457174A true JPS6457174A (en) | 1989-03-03 |
Family
ID=16657967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62214574A Pending JPS6457174A (en) | 1987-08-27 | 1987-08-27 | Speed signal detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6457174A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5421039A (en) * | 1990-09-29 | 1995-06-06 | Aisin Seiki Kabushiki Kaisha | Sanitary device having warm water tank |
| KR100467581B1 (en) * | 2002-01-09 | 2005-01-24 | 삼성전자주식회사 | Velocity measurement apparatus and method using quantization error |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS601566A (en) * | 1983-06-17 | 1985-01-07 | Fuji Electric Co Ltd | Speed detector |
| JPS61145460A (en) * | 1984-12-19 | 1986-07-03 | Sumitomo Electric Ind Ltd | Speed detection circuit |
| JPS6298265A (en) * | 1985-10-25 | 1987-05-07 | Hitachi Ltd | Speed detecting device |
-
1987
- 1987-08-27 JP JP62214574A patent/JPS6457174A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS601566A (en) * | 1983-06-17 | 1985-01-07 | Fuji Electric Co Ltd | Speed detector |
| JPS61145460A (en) * | 1984-12-19 | 1986-07-03 | Sumitomo Electric Ind Ltd | Speed detection circuit |
| JPS6298265A (en) * | 1985-10-25 | 1987-05-07 | Hitachi Ltd | Speed detecting device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5421039A (en) * | 1990-09-29 | 1995-06-06 | Aisin Seiki Kabushiki Kaisha | Sanitary device having warm water tank |
| KR100467581B1 (en) * | 2002-01-09 | 2005-01-24 | 삼성전자주식회사 | Velocity measurement apparatus and method using quantization error |
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