JPS6415964U - - Google Patents
Info
- Publication number
- JPS6415964U JPS6415964U JP10787587U JP10787587U JPS6415964U JP S6415964 U JPS6415964 U JP S6415964U JP 10787587 U JP10787587 U JP 10787587U JP 10787587 U JP10787587 U JP 10787587U JP S6415964 U JPS6415964 U JP S6415964U
- Authority
- JP
- Japan
- Prior art keywords
- output
- circuit
- rectification
- rotor
- level
- 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
- 238000009499 grossing Methods 0.000 claims description 4
- 230000010355 oscillation Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Transmission And Conversion Of Sensor Element Output (AREA)
Description
第１図はこの考案の一実施例を示すブロツク図
、第２図は第１図の各構成要素の信号波形を示す
図、第３図は従来の回転速度検出装置を示すブロ
ツク図である。
図において、２は検出器、７は比較回路、９は
速度処理回路、１２は発振回路、１４は整流平滑
回路である。なお、図中同一あるいは相当部分に
は同一符号を付して示してある。
FIG. 1 is a block diagram showing an embodiment of this invention, FIG. 2 is a diagram showing signal waveforms of each component in FIG. 1, and FIG. 3 is a block diagram showing a conventional rotational speed detecting device. In the figure, 2 is a detector, 7 is a comparison circuit, 9 is a speed processing circuit, 12 is an oscillation circuit, and 14 is a rectification and smoothing circuit. It should be noted that the same or corresponding parts in the figures are indicated by the same reference numerals.
Claims (1)
面を有するロータの凸面にわずかな空隙をもたせ
て位置し、ロータ回転による凹凸面とのギヤツプ
長変化に対応して等価インピーダンスが変化する
検出器と、この検出器に交流電流を加える発振回
路と、この発振回路の出力を整流する整流平滑回
路と、この整流平滑回路の出力と一定の基準レベ
ルを比較し、上記整流平滑回路出力が一定の基準
レベルより小さければ低レベル出力を、大きけれ
ば高レベル出力を出力する比較回路と、この比較
回路の出力を速度に変換する速度処理回路とを具
備した回転速度検出装置。 A detector that is located at a predetermined part of the motor stator with a slight gap between the convex surface of the rotor, which has an uneven surface on its circumference, and whose equivalent impedance changes in response to changes in the gap length between the rotor and the uneven surface due to rotation of the rotor. Then, an oscillation circuit that applies alternating current to this detector, a rectification and smoothing circuit that rectifies the output of this oscillation circuit, and the output of this rectification and smoothing circuit are compared with a certain reference level, and the output of the rectification and smoothing circuit is determined to be a certain level. A rotational speed detection device comprising a comparison circuit that outputs a low level output if it is smaller than a reference level, and outputs a high level output if it is larger than a reference level, and a speed processing circuit that converts the output of the comparison circuit into a speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10787587U JPS6415964U (en) | 1987-07-14 | 1987-07-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10787587U JPS6415964U (en) | 1987-07-14 | 1987-07-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6415964U true JPS6415964U (en) | 1989-01-26 |
Family
ID=31342684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10787587U Pending JPS6415964U (en) | 1987-07-14 | 1987-07-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6415964U (en) |
-
1987
- 1987-07-14 JP JP10787587U patent/JPS6415964U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6068408U (en) | Rotation angle measuring device | |
| JPS63149197U (en) | ||
| JPS6299815U (en) | ||
| JPS589068U (en) | Temperature detection device for rotating electrical machines | |
| JPS5883975U (en) | Brush powder adhesion detection device for wound induction motors | |
| JPS61127949U (en) | ||
| JP2000152565A (en) | Rotor position detection device for rotating electric machine | |
| JPS59934U (en) | Reference phase signal monitor device in unbalance measuring instrument | |
| JPS6378251U (en) | ||
| JPS58145341U (en) | Abnormality detection device for soil improvement machines, etc. | |
| JPH0174556U (en) | ||
| JPS6340175U (en) | ||
| JPS594471U (en) | Simple frequency-voltage conversion circuit | |
| JPS5857237U (en) | Rotary rectifier failure detection circuit in brushless generator | |
| JPS637980U (en) | ||
| JPS5897977U (en) | Rotating electrical machine speed sensor device | |
| JPS6082240U (en) | Eddy current temperature measuring device | |
| JPS6182163U (en) | ||
| JPS6068409U (en) | Rotation angle measuring device | |
| JPS6042912U (en) | Rotational displacement detection device | |
| JPS622369U (en) | ||
| JPS5895174U (en) | Clearance monitoring device for rotating electrical machines | |
| JPH03120356U (en) | ||
| JPS6163394U (en) | ||
| JPS6080304U (en) | Device for detecting the center position of a recess in a metal object |