JPH0293759U - - Google Patents
Info
- Publication number
- JPH0293759U JPH0293759U JP194989U JP194989U JPH0293759U JP H0293759 U JPH0293759 U JP H0293759U JP 194989 U JP194989 U JP 194989U JP 194989 U JP194989 U JP 194989U JP H0293759 U JPH0293759 U JP H0293759U
- Authority
- JP
- Japan
- Prior art keywords
- detection device
- rotation speed
- speed detection
- permanent magnets
- hall elements
- 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
- 238000001514 detection method Methods 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 2
- 230000004907 flux Effects 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Description
第１図、第２図はこの考案の一実施例によるモ
ータの回転数検出装置の構成図及び波形例を示す
図、第３図、第４図は従来のモータの回転数検出
装置の構成図及び波形例を示す図である。図中、
１は２相モータ、２ａ，２ｂはホール素子、３は
外部バイアス回路、４ａ，４ｂはバツフアアンプ
、５ａ，５ｂは乗算器、６は電流指令信号、７ａ
，７ｂは電流増幅器、８ａ，８ｂは巻線、９はＦ
／Ｖ変換器、１０はホール素子２ａ出力信号、１
１はバツフアアンプ出力信号、１２はモータ回転
信号、１３はエクスクルシブＯＲ回路、１４はホ
ール素子２ｂ出力信号、１５はエクスクルシブＯ
Ｒ回路出力信号である。なお図中同一あるいは相
当部分には同一符号を付してある。
1 and 2 are block diagrams and waveform examples of a motor rotation speed detection device according to an embodiment of this invention, and FIGS. 3 and 4 are block diagrams of a conventional motor rotation speed detection device. FIG. 3 is a diagram showing an example of a waveform. In the figure,
1 is a two-phase motor, 2a, 2b are Hall elements, 3 is an external bias circuit, 4a, 4b are buffer amplifiers, 5a, 5b are multipliers, 6 is a current command signal, 7a
, 7b is a current amplifier, 8a, 8b are windings, 9 is F
/V converter, 10 is the Hall element 2a output signal, 1
1 is a buffer amplifier output signal, 12 is a motor rotation signal, 13 is an exclusive OR circuit, 14 is a Hall element 2b output signal, 15 is an exclusive O
This is the R circuit output signal. Note that the same or corresponding parts in the figures are denoted by the same reference numerals.
Claims (1)
の磁束密度を検出する２個のホール素子とを備え
た２相モータの回転数検出装置において、上記２
個のホール素子から出力される信号を処理するエ
クスクルシブＯＲ回路と、パルス周波数に比例し
た直流電圧を出力するＦ／Ｖ変換器とを備えたこ
とを特徴とする回転数検出装置。 In a two-phase motor rotation speed detection device comprising two permanent magnets, two windings, and two Hall elements for detecting magnetic flux density of the permanent magnets, the above-mentioned 2
A rotation speed detection device comprising: an exclusive OR circuit that processes signals output from Hall elements; and an F/V converter that outputs a DC voltage proportional to a pulse frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP194989U JPH0293759U (en) | 1989-01-11 | 1989-01-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP194989U JPH0293759U (en) | 1989-01-11 | 1989-01-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0293759U true JPH0293759U (en) | 1990-07-25 |
Family
ID=31202288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP194989U Pending JPH0293759U (en) | 1989-01-11 | 1989-01-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0293759U (en) |
-
1989
- 1989-01-11 JP JP194989U patent/JPH0293759U/ja active Pending
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