JPH02112382U - - Google Patents
Info
- Publication number
- JPH02112382U JPH02112382U JP1996689U JP1996689U JPH02112382U JP H02112382 U JPH02112382 U JP H02112382U JP 1996689 U JP1996689 U JP 1996689U JP 1996689 U JP1996689 U JP 1996689U JP H02112382 U JPH02112382 U JP H02112382U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- signal
- oscillation
- drive
- vibrating device
- 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
- 230000010355 oscillation Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 9
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Description
第１図は本考案の一実施例を示すブロツク図、
第２図はその動作説明に供する線図、第３図は本
考案において用いることのできる一般的圧電振動
子とその振動モードを示す概略図、第４図は本考
案の他の実施例を示すブロツク図、第５図は圧電
振動子の駆動周波数と共振周波数のずれを測定す
るための従来回路を示すブロツク図、第６図は一
般の圧電振動子の等価回路図、第７図は圧電振動
子を駆動する従来の駆動装置を示すブロツク図、
第８図はその動作説明に供する線図である。
１……圧電振動子、２，８……位相検出回路、
３……駆動回路、４……可変周波数発振回路、５
……トランス、６……比較器、９……振動レベル
検出回路、１１……ステータ、１２，１３……電
極、１４……圧電体。
FIG. 1 is a block diagram showing an embodiment of the present invention.
Fig. 2 is a diagram for explaining its operation, Fig. 3 is a schematic diagram showing a general piezoelectric vibrator that can be used in the present invention and its vibration mode, and Fig. 4 shows another embodiment of the present invention. Block diagram. Figure 5 is a block diagram showing a conventional circuit for measuring the deviation between the drive frequency and resonance frequency of a piezoelectric vibrator. Figure 6 is an equivalent circuit diagram of a general piezoelectric vibrator. Figure 7 is a diagram of piezoelectric vibration. A block diagram showing a conventional drive device for driving a child;
FIG. 8 is a diagram for explaining the operation. 1... Piezoelectric vibrator, 2, 8... Phase detection circuit,
3...Drive circuit, 4...Variable frequency oscillation circuit, 5
...Transformer, 6...Comparator, 9...Vibration level detection circuit, 11...Stator, 12, 13...Electrode, 14...Piezoelectric body.
Claims (1)
動装置において、駆動信号を上記圧電振動子に与
える駆動回路と、上記圧電振動子に付設されその
振動を検出する振動検出手段と、上記駆動信号と
上記振動検出手段からの検出信号との位相差を検
出する位相検出回路とを有することを特徴とする
圧電振動装置。 (2) 上記位相検出回路からの上記位相差信号と
所定の値を有する基準信号とを比較する比較回路
と、発振回路と、上記比較回路の出力に応じて上
記発振回路の発振周波数を可変する手段とを有し
、上記駆動回路に上記発振回路からの発振出力信
号を加えることを特徴とする請求項１記載の圧電
振動装置。[Claims for Utility Model Registration] (1) A piezoelectric vibrating device that obtains mechanical vibrations using a piezoelectric vibrator, including a drive circuit that applies a drive signal to the piezoelectric vibrator, and a drive circuit that is attached to the piezoelectric vibrator and detects its vibration. A piezoelectric vibrating device comprising: vibration detecting means; and a phase detecting circuit that detects a phase difference between the drive signal and the detection signal from the vibration detecting means. (2) a comparison circuit that compares the phase difference signal from the phase detection circuit with a reference signal having a predetermined value, an oscillation circuit, and varying the oscillation frequency of the oscillation circuit according to the output of the comparison circuit; 2. The piezoelectric vibrating device according to claim 1, further comprising means for applying an oscillation output signal from the oscillation circuit to the drive circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1996689U JPH02112382U (en) | 1989-02-22 | 1989-02-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1996689U JPH02112382U (en) | 1989-02-22 | 1989-02-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02112382U true JPH02112382U (en) | 1990-09-07 |
Family
ID=31235943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1996689U Pending JPH02112382U (en) | 1989-02-22 | 1989-02-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02112382U (en) |
-
1989
- 1989-02-22 JP JP1996689U patent/JPH02112382U/ja active Pending
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