Combination type quartz cup-shaped fluctuation top harmonic oscillator
A combined and harmonic oscillator technology, which is applied in the direction of speed measurement by gyro effect, gyroscope/steering sensing equipment, measuring device, etc., can solve the problem of affecting the accuracy and sensitivity of cup-shaped wave gyroscopes, low Q value of harmonic oscillators, and difficult processing Cup shape and other problems, to achieve the effect of easy processing accuracy, reduce processing difficulty, and ensure processing accuracy
Active Publication Date: 2013-08-21
NAT UNIV OF DEFENSE TECH
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Problems solved by technology
However, most of the resonators currently used are integral parts made of a single metal material. The defects of this kind of resonator are: 1. The Q value of the resonator whose whole body is a metal material is not high; 2. The prior art There are quartz materials that are more suitable for harmonic oscillators. This quartz material has a high Q value (generally higher than 2.4×10 6 ), but it is difficult to process into an ideal cup shape, the processing is difficult, and the processing accuracy is low, which ultimately affects the accuracy and sensitivity of the cup-shaped wave gyroscope
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[0020] The present invention will be further described in detail below in conjunction with specific embodiments.
[0021] Such as figure 1 and figure 2 As shown, the combined quartz cup-shaped wave gyro resonator of the present invention includes a cup wall 2, a cup bottom 1 and a piezoelectric electrode sheet 3 attached to the cup bottom 1, and the cup wall 2 and cup bottom 1 are made of different materials. And be connected through assembly, for example, assembly through connectors, or other fastening methods. Two or more piezoelectric electrode sheets 3 for excitation or detection are attached to the cup bottom 1, that is, part of the piezoelectric electrode sheet 3 is used to excite the resonator to vibrate in the first mode, and the other part is used to detect the angular velocity of the resonator resulting in the second mode of vibration. In the present invention, the cup wall 2 and the cup bottom 1 are made of different materials and adopt a split and assembled des...
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The invention discloses a combination type quartz cup-shaped fluctuation top harmonic oscillator, which comprises a cup wall and a cup bottom, wherein the cup wall and the cup bottom are made from different materials and are connected with each other through assembly, and more than two piezoelectric electrode plates which are used for excitation and detection are attached onto the cup bottom. Theinvention has the advantages of simple and compact structure, easiness in processing, ensured processing precision, higher flexibility and the like.
Description
technical field [0001] The invention mainly relates to the field of solid wave gyroscopes, in particular to a combined quartz cup-shaped wave gyro resonator. Background technique [0002] The cup-shaped wave gyroscope is a vibrating-inertial device that utilizes the Coriolis effect. It has great potential for development because of its advantages of low energy consumption, low cost, high reliability and long life. The working principle of the cup-shaped wave gyro is based on the Coriolis effect generated when the resonator rotates around the central axis, so that an additional standing wave vibration occurs on the resonator relative to the original standing wave vibration. [0003] The accuracy and sensitivity of the cup-shaped undulation gyroscope are closely related to the material and manufacturing precision of its resonator. Generally, the resonator is required to have a high quality factor, that is, a high Q value. However, most of the resonators currently used are int...
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IPC IPC(8): G01C19/5691
Inventor 吴宇列吴学忠崔红娟肖定邦吴小梅栾清磊陶溢席翔朱炳杰
Owner NAT UNIV OF DEFENSE TECH