JPH02148412U - - Google Patents
Info
- Publication number
- JPH02148412U JPH02148412U JP1989057577U JP5757789U JPH02148412U JP H02148412 U JPH02148412 U JP H02148412U JP 1989057577 U JP1989057577 U JP 1989057577U JP 5757789 U JP5757789 U JP 5757789U JP H02148412 U JPH02148412 U JP H02148412U
- Authority
- JP
- Japan
- Prior art keywords
- self
- vibrator
- excited oscillation
- piezoelectric element
- oscillation
- 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 20
- 238000001514 detection method Methods 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 1
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- Gyroscopes (AREA)
Description
第１図は本考案の一実施例を示す振動ジヤイロ
の要部の斜視図、第２図は同振動子駆動回路のブ
ロツク図である。
１……No.１自励発振用圧電素子（駆動検出用
）、２……No.２自励発振用圧電素子（駆動用）
、３……No.３自励発振用圧電素子（駆動用）、
４……No.４自励発振圧電素子（駆動検出用）、
１′……No.１′自励発振用圧電素子（駆動検出
用）、２′……No.２′自励発振用圧電素子（駆
動用）、３′……No.３自励発振用圧電素子（駆
動用）、４′……No.４′自励発振用圧電素子（
駆動検出用）、１０……振動子、１１，１２……
アナログスイツチ、１３……自励発振回路、１４
……発振検出回路、１５……圧電素子切り換え回
路。
FIG. 1 is a perspective view of the main parts of a vibrating gyro showing an embodiment of the present invention, and FIG. 2 is a block diagram of the same vibrator drive circuit. 1...No.1 piezoelectric element for self-excited oscillation (for drive detection), 2...No.2 piezoelectric element for self-excited oscillation (for drive)
, 3...No. 3 piezoelectric element for self-excited oscillation (for driving),
4...No.4 self-excited oscillation piezoelectric element (for drive detection),
1'...No.1' Piezoelectric element for self-excited oscillation (for drive detection), 2'...No.2' Piezoelectric element for self-excited oscillation (for drive), 3'...No.3 For self-excited oscillation Piezoelectric element (for driving), 4'...No. 4' Piezoelectric element for self-excited oscillation (
(for drive detection), 10... vibrator, 11, 12...
Analog switch, 13...Self-excited oscillation circuit, 14
...Oscillation detection circuit, 15...Piezoelectric element switching circuit.
Claims (1)
と振動検出用圧電素子とを１組とする偶数枚の自
励発振用圧電素子と、前記振動検出用圧電素子の
出力を駆動用圧電素子に帰還させて振動子を自励
発振させる自励発振回路とを備えた振動ジヤイロ
の振動子駆動回路において、 前記各自励発振用圧電素子にそれぞれ対応して
振動子の反対面に張り付けられた予備の自励発振
用圧電素子と、振動子が自励発振しているか否か
を検出する発振検出回路と、振動子が自励発振し
ていないことを前記発振検出回路が検出した時に
、自励発振に用いる自励発振用圧電素子として前
記予備の自励発振用圧電素子に切り換える圧電素
子切り換え回路とを備えたことを特徴とする振動
ジヤイロの振動子駆動回路。[Claims for Utility Model Registration] An even number of piezoelectric elements for self-excited oscillation, which are a set of the same number of drive piezoelectric elements and vibration detection piezoelectric elements attached to a vibrator, and the vibration detection piezoelectric elements. In a vibrating gyro vibrator drive circuit comprising a self-excited oscillation circuit that returns an output to a drive piezoelectric element to cause the vibrator to self-oscillate, an opposite side of the vibrator corresponds to each of the self-excited oscillation piezoelectric elements. A spare piezoelectric element for self-excited oscillation pasted on a surface, an oscillation detection circuit that detects whether or not the vibrator is self-oscillating, and the oscillation detection circuit that detects that the vibrator is not self-oscillating. A vibrator drive circuit for a vibrating gyro, comprising: a piezoelectric element switching circuit that switches the piezoelectric element for self-excited oscillation to the spare piezoelectric element for self-excited oscillation as the piezoelectric element for self-excited oscillation used for self-excited oscillation when detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989057577U JPH02148412U (en) | 1989-05-19 | 1989-05-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989057577U JPH02148412U (en) | 1989-05-19 | 1989-05-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02148412U true JPH02148412U (en) | 1990-12-17 |
Family
ID=31582412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989057577U Pending JPH02148412U (en) | 1989-05-19 | 1989-05-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02148412U (en) |
-
1989
- 1989-05-19 JP JP1989057577U patent/JPH02148412U/ja active Pending