CN2351744Y

CN2351744Y - Triangular prism vibrating gyroscope

Info

Publication number: CN2351744Y
Application number: CN98249966U
Authority: CN
Inventors: 阳台运
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-12-24
Filing date: 1998-12-24
Publication date: 1999-12-01
Anticipated expiration: 2008-12-24

Abstract

The utility model relates to a triangular prism vibration gyroscope which comprises a control circuit and a vibration beam in which a piezoelectric piece is pasted. The utility model is characterized in that the vibration beam in a triangular prism shape is positioned on a conductor base through a support device. In the utility model, because a driving surface and a reading surface are the same surface, an adverse oscillator signal and other outer signals can be sufficiently cancelled through the differential principle. The utility model has the advantages of high detection sensitivity, little gyroscope drift, etc.

Description

The triangular prism oscillation gyro

The utility model relates to a kind of gyro, particularly a kind of cylindricality piezoelectric vibrating gyro.

Existing piezoelectric vibrating gyro generally is to be made of control circuit, piezoelectric patches and walking beam, and its walking beam is the rectangular column structure.Since the drive surface of this class gyro with read the face quadrature, the signal of reading will be subjected to having a strong impact on of oscillator signal and external signal, therefore exist deficiencies such as detection signal sensitivity is low, gyroscopic drift is big, greatly reduce the usability of piezoelectric vibrating gyro.

The purpose of this utility model provides a kind of triangular prism oscillation gyro simple in structure, and it can the oscillation-damped signal and the influence of external signal.

The purpose of this utility model is to realize by such technical scheme, and it includes control circuit and posts the walking beam of piezoelectric patches, it is characterized in that: be triangular prism shaped walking beam and be positioned on the conductor seat by bracing or strutting arrangement.

Principle of work of the present utility model is: oscillator, phase compensator and driving piezoelectric patches a, b in feedback piezoelectric patches c and the control circuit form self-sustained oscillation, according to the Ge Shi principle, after applying voltage,, the piezoelectricity adverse effect produces periodic vibration because of making the walking beam that is triangular prism shaped to driving piezoelectric patches a, b on the walking beam.When the utility model rotates, will on the side of walking beam, produce coriolis force, this coriolis force is oppressed again and is driven piezoelectric patches a, b, according to piezoelectric effect, driving piezoelectric patches a, b are last will to produce the voltage signal that changes with the angular speed size, after differential amplifier, lock detector and the direct current amplifier of this voltage signal in control circuit carries out oscillation-damped signal and external signal, formed the simple DC voltage that is directly proportional with angular speed size output.The effect of conductor seat is the shielding external interference signals.

Adopted technique scheme, the utility model because of drive surface and the face of reading for one side, disadvantageous oscillator signal and other external signal can fully be offset by differential principle, have to detect advantages such as sensitive high and gyroscopic drift is little.

Description of drawings of the present utility model is as follows:

Fig. 1 is the structural representation of walking beam.

Fig. 2 is the structural representation of the utility model first embodiment;

Fig. 3 is the left view of Fig. 1;

Fig. 4 is the structural representation of the utility model second embodiment;

Fig. 5 is the left view of Fig. 3;

Fig. 6 is a fundamental diagram of the present utility model;

Among the figure: 1. piezoelectric patches; 2. walking beam; 3. conductor seat; 4. elastic conductor silk; 5. conductor support bar; 6. conductor supporting wire.

The utility model is described in further detail below in conjunction with drawings and Examples:

Shown in Fig. 2,4, the utility model includes control circuit and posts the walking beam 2 of piezoelectric patches 1, it is characterized in that: in conjunction with Fig. 3,5 as can be known, be triangular prism shaped walking beam 2 and be positioned on the conductor seat 3 by bracing or strutting arrangement.Post a piezoelectric patches 1 respectively on three sides of walking beam 2 prisms.Conductor seat 3 is sheet metals.

As shown in Figure 6, principle of work of the present utility model is: oscillator, phase compensator and driving piezoelectric patches a, b in feedback piezoelectric patches c and the control circuit form self-sustained oscillation, according to the Ge Shi principle, after applying voltage,, the piezoelectricity adverse effect produces periodic vibration because of making the walking beam that is triangular prism shaped to driving piezoelectric patches a, b on the walking beam.When the utility model rotates, will on the side of walking beam, produce coriolis force, this coriolis force is oppressed again and is driven piezoelectric patches a, b, according to piezoelectric effect, driving piezoelectric patches a, b are last will to produce the voltage signal that changes with the angular speed size, after differential amplifier, lock detector and the direct current amplifier of this voltage signal in control circuit carries out oscillation-damped signal and external signal, formed the simple DC voltage that is directly proportional with angular speed size output.The effect of conductor seat is the shielding external interference signals.

As Fig. 2,4 and in conjunction with Fig. 3,5 as can be known, bracing or strutting arrangement is that the two ends of passing the elastic conductor silk 4 of walking beam 2 are fixed in respectively on the conductor supporting wire 6 on the two conductor support bars 5 that are connected across walking beam 2 sides, and conductor support bar 5 is fixed on the conductor seat 3.

As shown in Figure 3, the mode that elastic conductor silk 4 passes walking beam 2 can be to penetrate from one side, and another side passes, and as shown in Figure 4, also can be to penetrate from one side, passes from corner angle.

Claims

1. a triangular prism oscillation gyro includes control circuit and posts the walking beam (2) of piezoelectric patches (1), it is characterized in that: be triangular prism shaped walking beam (2) and be positioned on the conductor seat (3) by bracing or strutting arrangement.

2. triangular prism oscillation gyro as claimed in claim 1, it is characterized in that: bracing or strutting arrangement is that the two ends of passing the elastic conductor silk (4) of walking beam (2) are fixed in respectively on the conductor supporting wire (6) on the two conductor support bars (5) that are connected across walking beam (2) side, and conductor support bar (5) is fixed on the conductor seat (3).

3. triangular prism oscillation gyro as claimed in claim 1 is characterized in that: post a piezoelectric patches (1) respectively on three sides of walking beam (2) prism.

4. triangular prism oscillation gyro as claimed in claim 2 is characterized in that: the mode that elastic conductor silk (4) passes walking beam (2) is to penetrate from one side, and another side passes.

5. triangular prism oscillation gyro as claimed in claim 2 is characterized in that: the mode that elastic conductor silk (4) passes walking beam (2) is to penetrate from one side, passes from corner angle.

6. as claim 1,2 described triangular prism oscillation gyros, it is characterized in that: conductor seat (3) is a sheet metal.