Harmonic oscillator quality factor and nonuniformity rapid testing device

Abstract

The invention discloses a harmonic oscillator quality factor and nonuniformity rapid testing device. The harmonic oscillator quality factor and nonuniformity rapid testing device comprises a vacuum system, an excitation system, a harmonic oscillator, a clamping and transposition device, a laser vibration meter and a resolving module. The harmonic oscillator is excited to vibrate in a physical knocking mode; acquiring single-point displacement data of a harmonic oscillator test position by using a laser vibration meter; obtaining the inherent frequency and the frequency difference of the harmonic oscillator by adopting a frequency domain analysis method; after test data are segmented according to time, spectral analysis is carried out, the amplitude spectral density of displacement signals in different time periods is obtained, and the difference of the circumferential quality factor of the harmonic oscillator is obtained by using the amplitude spectral density change of two inherent frequency points; and finally, calculating to obtain two quality factors. According to the method, the purpose of accurately identifying the quality factor and the non-uniformity of the harmonic oscillator through single test is achieved, the method has the advantages of being high in test speed, low in requirement for the number of test devices, high in test precision, good in practicability and the like, and the test efficiency of the quality factor and the non-uniformity of the harmonic oscillator is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of resonator quality factor and its inhomogeneity fast testing device, in particular to a kind of resonator quality factor and its inhomogeneity fast testing device based on time-frequency analysis, belong to resonant inertial device and instrument technical field. BACKGROUND

[0002] As a new type of inertial instrument, resonator gyroscope has the advantages of high precision, small size, simple structure and high reliability, and is a gyroscope with great application prospect. As the core component of resonator gyroscope, the quality factor, quality factor inhomogeneity and frequency splitting of resonator represent the performance of gyroscope to a great extent, and determine the precision of gyroscope to a great extent. Accurate and efficient acquisition of these parameter indexes plays an extremely important role in resonator gyroscope assembly, whole table precision and production efficiency improvement.

[0003] At present, the research direction of resonator quality factor test mainly focuses on resonator vibration excitation mode and quality factor identification method. For example, the performance of resonator is detected at low cost and non-contact by using electromagnet to excite resonator vibration and detecting resonator displacement data by microphone chip (Non-contact driving detection system and method for cup-shaped resonator of cup-shaped wave gyroscope, Chinese patent, application number: CN201510252495.1); the quality factor of resonator is calculated by using free oscillation attenuation method after the displacement data of resonator is obtained by using laser vibration meter, and the quality factor of resonator is tested in vacuum environment (Piezoelectric excitation device for bare quartz resonator and testing device and method for quality factor, Chinese patent, application number: CN201911109374.6); the inherent frequency f and bandwidth Δf of resonator are obtained by using resonator frequency response analysis method, and the quality factor of quartz glass is calculated, which shortens the test time to a certain extent (Research status and prospect of mechanical quality factor of quartz glass, published in Navigation and Control, No. 6, 2019, Vol. 19) .

[0004] In the existing research reports, the test method of resonator quality factor mainly focuses on excitation mode, low cost and high precision, but there are few test methods for resonator quality factor inhomogeneity. Usually, different positions of resonator are tested point by point repeatedly, which greatly affects the test efficiency and accuracy. SUMMARY

[0005] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art and provide a resonator quality factor and its inhomogeneity fast testing device, which realizes accurate and efficient test of resonator quality factor and its inhomogeneity.

[0006] The technical solution of the present application is:

[0007] The present application discloses a kind of resonator quality factor and its non-uniformity fast testing device, including vacuum system, excitation system, resonator, clamping and indexing device, laser vibration meter and solving module, wherein:

[0008] Resonator, installed in vacuum system;

[0009] Vacuum system, including vacuum cavity, provides vacuum environment for resonator;

[0010] Excitation system, resonator and clamping and indexing device are located in vacuum cavity;

[0011] Excitation system, including knocking device, knocking control system and distance adjustment tool;Using distance adjustment tool adjusts the position of knocking device, so that knocking device and resonator are at appropriate distance, knocking device is controlled by knocking control system to knock resonator by pulse excitation, and excites resonator free vibration;

[0012] Clamping and indexing device is used to fix resonator, and drive resonator to rotate to adjust the position of resonator to be knocked;

[0013] Laser vibration meter detects displacement in resonator free vibration attenuation process, and sends displacement signal to solving module;

[0014] Solving module obtains the quality factor of resonator and the non-uniformity of quality factor according to the displacement signal detected by laser vibration meter.

[0015] Further, in the above device, the displacement signal detected by laser vibration meter is processed by using time domain and frequency domain comprehensive analysis method, and the quality factor of resonator and the non-uniformity thereof are solved, and the specific method is as follows:

[0016] The displacement signal of resonator is analyzed by frequency spectrum, and the amplitude spectral density of displacement signal is obtained;

[0017] The two largest frequency points in the amplitude spectral density of displacement signal are obtained as two natural frequencies f1 and f2 of resonator, and the frequency difference Δf = |f1-f2| is obtained;

[0018] Two frequency amplitude spectral densities A1 and A2 corresponding to two natural frequencies f1 and f2 are obtained;

[0019] According to two natural frequencies of resonator, the comprehensive value of quality factor is obtained;

[0020] The displacement signal of resonator is divided into x and y two groups by time average, and each group is analyzed by frequency spectrum respectively, and two groups of data amplitude spectral density corresponding to two natural frequencies of two groups of displacement signals are obtained;

[0021] According to two frequency amplitude spectral densities, two sets of data amplitude spectral densities and quality factor comprehensive values, the maximum and minimum values of the quality factor of the resonator and the non-uniformity of the quality factor of the resonator are calculated.

[0022] Further, in the above device, the quality factor is specifically:

[0023]

[0024] Q2 = AK Q *Q1

[0025]

[0026] ω2 = 2πf1

[0027] ω1 = 2πf1

[0028] Wherein, A1, A2 are two frequency amplitude spectral densities corresponding to two natural frequencies f1 and f2 of the resonator in all data; Q 综合 is the quality factor comprehensive value, Q1 and Q2 are the maximum and minimum values of the quality factor; A 1x , A 1y , A 2x and A 2y are two sets of data amplitude spectral densities corresponding to two natural frequencies, ω1 and ω2 are the angular frequencies corresponding to the natural frequencies f1 and f2 of the resonator.

[0029] Further, in the above device, the quality factor comprehensive value is specifically:

[0030]

[0031] Wherein, Q 综合 is the quality factor comprehensive value, τ is the time when the amplitude of the displacement signal decays to the initial amplitude times, f1 and f2 are the two largest frequency points in the displacement signal amplitude spectral density.

[0032] Further, in the above device, the non-uniformity of the quality factor is specifically:

[0033]

[0034] Wherein, Q1 and Q2 are the maximum and minimum values of the quality factor; J is the non-uniformity of the quality factor.

[0035]

[0036] Further, in the above device, the time for solving the data is greater than or equal to the time for the amplitude to decay to e times the initial amplitude, wherein e is a natural constant.

[0037] Further, in the above device, the displacement signal of the resonator is divided into two groups according to time, and the sampling time of each group of data is greater than or equal to wherein Δf is the frequency difference of the resonator.

[0038] Further, in the above device, the knocking device of the excitation system has a material hardness lower than that of the resonator; and the vacuum degree in the vacuum cavity of the vacuum system is better than 1x10 -3 Pa; the rotation adjustment angle of the distance adjustment tool is 0-360°, and the translation adjustment range is ±5cm.

[0039] Further, in the above device, the resonator has an umbrella-shaped structure, including an umbrella surface and an umbrella handle, wherein the umbrella handle is connected with the clamping and indexing device; and the umbrella surface generates free vibration under the pulse excitation of the knocking device.

[0040] Further, in the above device, the clamping and indexing device includes a vacuum motor, a mounting base, a spring cylinder clamp, and a nut, wherein a tapered hole matching the size of the umbrella handle of the resonator is arranged in the spring cylinder clamp; the umbrella handle is mounted in the tapered hole and fixedly connected with the vacuum electrode through the mounting base; the locking stiffness of the umbrella handle of the resonator is adjusted by adjusting the connection tightness of the nut and the tapered hole; and the cylindricity of the spring cylinder clamp is less than or equal to 0.03mm.

[0041] The beneficial effects of the present application over the prior art are:

[0042] (1) The present application solves the problems of inaccurate and low-efficiency testing of the quality factor and its non-uniformity in the prior art, avoids the influence of the excitation and detection positions on the testing accuracy of the quality factor, and realizes accurate and efficient testing of the quality factor and its non-uniformity of the resonator;

[0043] (2) The resonator performance testing device provided by the present application is simple and easy to implement, does not require complex signal acquisition and circuit control methods, and can realize fast and accurate testing of key performance parameters such as the frequency, frequency difference, and quality factor non-uniformity of the resonator, and has good practicability;

[0044] (3) The resonator solving method provided by the present application can identify the key parameters such as the frequency, frequency difference, quality factor, and quality factor non-uniformity of the resonator through one vibration decay process, has high testing speed and efficiency, avoids the influence of performance changes over time, and has higher testing accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 The present application is a resonator performance fast testing method and device schematic diagram;

[0046] Figure 2 This is a flowchart of the method for calculating the quality factor and non-uniformity of the harmonic oscillator according to the present invention.

[0047] Figure 3 This is a flowchart of the test procedure for the quality factor and non-uniformity of the harmonic oscillator according to the present invention.

[0048] Figure 4 This is a schematic diagram of the method for calculating the quality factor and non-uniformity of the harmonic oscillator according to the present invention. Detailed Implementation

[0049] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0050] like Figure 1 As shown, this invention discloses a rapid testing device for the quality factor and non-uniformity of a resonator, comprising a vacuum system 1, an excitation system 2, a resonator 3, a clamping and rotating device 4, a laser vibrometer 5, and a calculation module 6, wherein:

[0051] The resonator 3 is installed inside the vacuum system 1;

[0052] Vacuum system 1, including a vacuum cavity, provides a vacuum environment for harmonic oscillator 3;

[0053] The excitation system 2, the resonator 3, and the clamping and transposition device 4 are all located inside the vacuum cavity;

[0054] Excitation system 2 includes a striking device, a striking control system, and a distance adjustment fixture; the distance adjustment fixture is used to adjust the position of the striking device so that the striking device is at a suitable distance from the resonator 3; the striking control system controls the striking device to strike the resonator 3 through pulse excitation, thereby exciting the resonator 3 to vibrate freely.

[0055] The clamping and rotating device 4 is used to fix the resonator 3 and drive the resonator 3 to rotate in order to adjust the position of the resonator 3 being struck and detected.

[0056] The laser vibration meter 5 detects the displacement of the harmonic oscillator 3 during the free vibration decay process and sends the displacement signal to the calculation module 6;

[0057] The calculation module 6 obtains the quality factor of the harmonic oscillator and the non-uniformity of the quality factor based on the displacement signal detected by the laser vibrometer 5.

[0058] Preferably, a combined time-domain and frequency-domain analysis method is used to process the displacement signal detected by the laser vibrometer 5, and the quality factor and non-uniformity of the harmonic oscillator are calculated. The specific method is as follows:

[0059] The displacement signal of the harmonic oscillator is subjected to spectral analysis to obtain the amplitude spectral density of the displacement signal;

[0060] The two frequency points with the maximum amplitude spectrum density in the displacement signal are two natural frequencies f1 and f2 of the resonator, and a frequency difference Δf = |f1-f2| is obtained;

[0061] Two frequency amplitude spectrum densities A1 and A2 corresponding to the two natural frequencies f1 and f2 are obtained.

[0062] According to the two natural frequencies of the resonator, a quality factor comprehensive value is obtained.

[0063] The displacement signal of the resonator is divided into two groups x and y by time average, and the two groups are respectively subjected to frequency spectrum analysis to obtain two groups of data amplitude spectrum densities corresponding to the two natural frequencies of the two groups of displacement signals.

[0064] According to the two frequency amplitude spectrum densities, the two groups of data amplitude spectrum densities, and the quality factor comprehensive value, the maximum and minimum values of the quality factor of the resonator and the non-uniformity corresponding to the quality factor of the resonator are calculated.

[0065] Preferably, the quality factor is specifically:

[0066]

[0067] Q2=ΔK Q *Q1

[0068]

[0069] ω2=2πf1

[0070] ω1=2πf1

[0071] Wherein, A1 and A2 are two frequency amplitude spectrum densities corresponding to two natural frequencies f1 and f2 of the resonator in all data; Q 综合 is a quality factor comprehensive value, and Q1 and Q2 are maximum and minimum values of the quality factor; A 1x , A 1y , A 2x and A 2y are two groups of data amplitude spectrum densities corresponding to two natural frequencies of two groups of data, respectively, and ω1 and ω2 are angular frequencies corresponding to natural frequencies f1 and f2 of the resonator.

[0072] Preferably, the quality factor comprehensive value is specifically:

[0073]

[0074] Wherein, Q 综合 is a quality factor comprehensive value, τ is a time when the amplitude of the displacement signal decays to 1 / e of the initial amplitude f1 and f2 are two frequency points with the maximum amplitude spectrum density in the displacement signal.

[0075] Preferably, the unevenness of the quality factor is calculated by the following method:

[0076]

[0077] wherein Q1 and Q2 are the maximum and minimum values of the quality factor, respectively; and J is the unevenness of the quality factor.

[0078] Preferably, the time for solving the data is greater than or equal to the time for the amplitude to decay to the initial amplitude times, wherein e is the natural constant.

[0079] Preferably, the displacement signal of the resonator is divided into two groups according to time, and the sampling time of each group of data is greater than or equal to wherein Δf is the frequency difference of the resonator.

[0080] Preferably, the knocking device of the excitation system 2 has a material hardness lower than that of the resonator 3; the vacuum degree in the vacuum cavity of the vacuum system 1 is better than 1x10 -3 Pa; the rotation adjustment angle of the distance adjustment tool is 0-360°, and the translation adjustment range is ±5 cm.

[0081] Preferably, the resonator 3 is in an umbrella shape, including a canopy and a handle, wherein the handle is connected with the clamping and indexing device 4; the canopy generates free vibration under the pulse excitation of the knocking device.

[0082] Preferably, the clamping and indexing device 4 includes a vacuum motor, a mounting base, a spring cylinder clamp, and a nut, wherein a tapered hole matching the size of the handle of the resonator is arranged in the spring cylinder clamp; the handle is installed in the tapered hole and is fixedly connected with the vacuum electrode through the mounting base; the locking stiffness of the handle of the resonator is adjusted by adjusting the connection tightness of the nut and the tapered hole; and the cylindricity of the spring cylinder clamp is less than or equal to 0.03 mm.

[0083] Embodiment

[0084] The embodiment provides a resonator quality factor and unevenness rapid testing device, which comprises:

[0085] The resonator performance testing device mainly comprises a vacuum system 1, an excitation system 2, a resonator 3, a clamping and indexing device 4, a laser vibration meter 5, and a solving module 6.

[0086] The resonator 3 to be measured is firmly installed on the clamping and indexing device 4, so as to ensure the consistency of the support stiffness of the resonator 3 in all directions. The clamping and indexing device 4 has rotation and translation functions, the rotation adjustment range is 0-360°, and the translation adjustment range is ±5 cm, so as to realize the vibration of the resonator 3 at the corresponding position excited by the excitation system 2. The vacuum system 1 can provide a vacuum degree of ≤1x10-3 The vacuum environment of Pa avoids the influence of air damping on the test result of the quality factor of the resonator 3. The laser displacement meter 5 has a displacement detection function for the quartz resonator 3 with high light transmittance, and can convert the vibration displacement of the resonator 3 into a digital signal.

[0087] Figure 2 The flow chart of the resonator quality factor and its non-uniformity calculation method of the application. The method mainly includes: resonator vibration attenuation data, time domain, frequency domain analysis, resonator frequency, frequency difference and quality factor comprehensive value, segmented spectrum analysis, resonator quality factor and its non-uniformity.

[0088] Among them: the resonator vibration attenuation data tested by the laser displacement meter 5 is analyzed in the frequency domain, and the resonator frequency and frequency difference are calculated; then the time domain analysis is carried out, and the quality factor comprehensive value of the resonator in this test is calculated. Then the vibration attenuation data is analyzed by segmented spectrum analysis, and the quality factor ratio at two frequencies is obtained, and then the quality factor and its non-uniformity are calculated by the calculation module 6 according to the quality factor comprehensive value.

[0089] As shown in Figure 3 The resonator quality factor and its non-uniformity test process of the application includes the following steps:

[0090] Step 1, after installing the resonator 3 on the clamping device 4, check whether it is installed firmly;

[0091] Step 2, adjust the clamping device 4, test the knocking position of the excitation device 2 on the resonator 3, and the resonator 3 can produce vibration;

[0092] Step 3, the vacuum system 1 starts to work, and ensures that the working environment of the resonator 3 reaches the required vacuum degree, for example, the vacuum degree is ≤1×10 -3 Pa;

[0093] Step 4, adjust the laser displacement meter 5 to ensure that it can detect the resonator vibration signal;

[0094] Step 5, knock the resonator 3 through the excitation system 2, so that the resonator reaches the corresponding amplitude, for example, ≥1μm;

[0095] Step 6, test the displacement signal of the resonator 3 in the vibration attenuation process by the laser displacement meter 5, and convert it into a digital signal;

[0096] Step 7, calculate the performance of the resonator by using the resonator quality factor and its non-uniformity calculation method.

[0097] Figure 4It is a schematic diagram of the resonator quality factor and its non-uniformity calculation method of the present application. The method mainly includes: resonator frequency, frequency difference and quality factor comprehensive value calculation, resonator quality factor and its non-uniformity calculation 14 two parts.

[0098] Wherein: the displacement detection data obtained by testing the laser vibration tester 5 is subjected to frequency spectrum analysis to obtain the amplitude spectrum density of the displacement signal, wherein the two frequency points with the maximum amplitude spectrum density are the two natural frequencies f1 and f2 of the resonator 2, the difference is the frequency difference Δf = |f1-f2|, and the two frequency amplitude spectrum densities are A1 and A2; the comprehensive value of the quality factor of the resonator Q 综合 The amplitude attenuation time τ can be calculated according to the initial amplitude . .

[0099] The resonator displacement detection data is divided into x and y two groups according to time average, each group is subjected to frequency spectrum analysis to obtain the amplitude spectrum density of the displacement signal, and the two groups of data amplitude spectrum densities corresponding to the two natural frequencies f1 and f2 are A 1x , A 1y , A 2x and A 2y , then the maximum and minimum value ratio of the quality factor of the resonator can be calculated by the following formula:

[0100]

[0101] According to the maximum and minimum value ratio of the quality factor ΔK Q and the comprehensive value of the quality factor Q 综合 of this test, the maximum and minimum value of the quality factor of the resonator can be calculated by the following formula:

[0102]

[0103] Q2 = ΔK Q *Q1

[0104] According to the maximum and minimum value of the quality factor, the non-uniformity J of the quality factor of the resonator can be calculated by the following formula:

[0105]

[0106] At this point, the quality factor and its non-uniformity of the resonator are quickly tested, and the key parameters such as resonator frequency, frequency difference, quality factor and its non-uniformity can be obtained by once testing after the resonator is excited to vibrate by the resonator quality factor and its non-uniformity testing device, and the testing efficiency is significantly improved.

[0107] The laser vibration tester 5 has displacement detection function for quartz resonator with high transmittance. The clamping and indexing device 4 has precise rotation function in vacuum environment.

[0108] While the application has been described in detail by reference to preferred embodiments thereof, it is to be understood that the description is not to be construed as limiting the scope of the application. Various modifications and changes can occur to those skilled in the art, once they learn of the basic concept of the application. Therefore, the scope of the application is to be defined by the appended claims, rather than by the description of the preferred embodiments.

[0109] The description of the application herein is not intended to be complete description of all features of the application. It is contemplated that those skilled in the art will be able to practice the application without departing from its scope.

Claims

1. A rapid testing device for the quality factor and non-uniformity of a harmonic oscillator, characterized in that, It includes a vacuum system (1), an excitation system (2), a resonator (3), a clamping and rotation device (4), a laser vibrometer (5), and a solution module (6), wherein: The harmonic oscillator (3) is installed inside the vacuum system (1); A vacuum system (1) includes a vacuum cavity that provides a vacuum environment for the harmonic oscillator (3); The excitation system (2), the resonator (3), and the clamping and transposition device (4) are all located inside the vacuum cavity; The excitation system (2) includes a striking device, a striking control system and a distance adjustment fixture; the distance adjustment fixture is used to adjust the position of the striking device so that the striking device is at a suitable distance from the resonator (3); the striking control system controls the striking device to strike the resonator (3) by pulse excitation, thereby exciting the resonator (3) to vibrate freely. The clamping and rotating device (4) is used to fix the resonator (3) and drive the resonator (3) to rotate to adjust the position of the resonator (3) being struck and detected. The laser vibration meter (5) detects the displacement of the harmonic oscillator (3) during the free vibration decay process and sends the displacement signal to the calculation module (6); The calculation module (6) obtains the quality factor of the harmonic oscillator and the non-uniformity of the quality factor based on the displacement signal detected by the laser vibrometer (5).

2. The rapid testing device for the quality factor and non-uniformity of a harmonic oscillator according to claim 1, characterized in that, The method of using time-domain and frequency-domain integrated analysis to process the displacement signal detected by the laser vibrometer (5) and calculate the quality factor and non-uniformity of the harmonic oscillator is as follows: The displacement signal of the harmonic oscillator is subjected to spectral analysis to obtain the amplitude spectral density of the displacement signal; The two frequency points with the largest amplitude spectral density of the displacement signal are obtained as the two natural frequencies f1 and f2 of the harmonic oscillator, and the frequency difference Δf = |f1-f2| is obtained. Obtain the two frequency amplitude spectral densities A1 and A2 corresponding to the two natural frequencies f1 and f2; The combined quality factor value is obtained based on the two natural frequencies of the harmonic oscillator; The displacement signal of the harmonic oscillator is divided into two groups, x and y, according to the time average. Spectral analysis is performed on each group to obtain the amplitude spectral density of the two groups of displacement signals corresponding to the two natural frequencies. Based on the combined values ​​of the amplitude spectral density at two frequencies, the amplitude spectral density of two sets of data, and the quality factor, calculate the maximum and minimum values ​​of the quality factor of the harmonic oscillator, as well as the inhomogeneity corresponding to the quality factor of the harmonic oscillator.

3. The rapid testing device for the quality factor and non-uniformity of a harmonic oscillator according to claim 2, characterized in that, The quality factor is specifically: ω1=2πf1 Where A1 and A2 are the amplitude spectral densities of the two natural frequencies f1 and f2 of the harmonic oscillator in all the data, respectively; Q 综合 This represents the composite quality factor value, where Q1 and Q2 are the maximum and minimum quality factors, respectively; A 1x A 1y A 2x and A 2y Let f1 and f2 be the amplitude spectral densities of the two sets of data at their respective natural frequencies, and let f1 and f2 be the angular frequencies corresponding to the natural frequencies f1 and f2 of the harmonic oscillator.

4. The rapid testing device for the quality factor and non-uniformity of a harmonic oscillator according to claim 2, characterized in that, The comprehensive value of the quality factor is specifically as follows: Among them, Q 综合 The quality factor is the overall value, and τ is the amplitude of the displacement signal decaying to its initial amplitude. Over a time period of times, f1 and f2 are the two frequency points with the largest amplitude spectral density of the displacement signal.

5. The rapid testing device for the quality factor and non-uniformity of a harmonic oscillator according to claim 2, characterized in that, The non-uniformity of the quality factor is specifically addressed by the following method: Where Q1 and Q2 are the maximum and minimum values ​​of the quality factor, respectively; J represents the non-uniformity of the quality factor.

6. The rapid testing device for the quality factor and non-uniformity of a harmonic oscillator according to claim 2, characterized in that: The time taken to resolve the data is greater than or equal to the amplitude decaying to the initial amplitude. The time factor is 1 times, where e is the natural constant.

7. The rapid testing device for the quality factor and non-uniformity of a harmonic oscillator according to claim 2, characterized in that: The displacement signal of the harmonic oscillator is divided into two groups according to time, and the sampling time of each group of data is greater than or equal to Where Δf is the frequency difference of the harmonic oscillator.

8. The rapid testing device for the quality factor and non-uniformity of a harmonic oscillator according to claim 1, characterized in that: The material hardness of the striking device in the excitation system (2) is lower than that of the resonator (3); the vacuum degree in the vacuum chamber of the vacuum system (1) is better than 1×10⁻⁶. -3 Pa; The rotation adjustment angle of the distance adjustment fixture is 0~360°, and the translation adjustment range is ±5cm.

9. The rapid testing device for the quality factor and non-uniformity of a harmonic oscillator according to claim 1, characterized in that, The resonator (3) is an umbrella-shaped structure, including an umbrella surface and an umbrella handle, wherein the umbrella handle is connected to the clamping and rotating device (4); the umbrella surface generates free vibration under the pulse excitation of the striking device.

10. The rapid testing device for the quality factor and non-uniformity of a harmonic oscillator according to claim 1, characterized in that, The clamping and rotation device (4) includes: a vacuum motor, a mounting base, a spring collet, and a nut; wherein, the spring collet is provided with a conical hole matching the size of the umbrella handle of the resonator; the umbrella handle is installed in the conical hole and fixed to the vacuum electrode through the mounting base; the locking stiffness of the umbrella handle of the resonator is adjusted by adjusting the tightness of the connection between the nut and the conical hole; the cylindricity of the spring collet is less than or equal to 0.03 mm.

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