A fully automated measurement and tuning device for multi-cell ellipsoidal resonant cavities

Abstract

The present invention discloses a fully automated measurement and tuning device for a multi-cell ellipsoid resonant cavity, and belongs to the technical field of electric field measurement, coaxiality measurement and tuning. The device of the present invention includes a main support system, a small ball wire pulling device, a coaxiality measuring device, a unit tuning device, a power supply device, a control system and a multi-cell ellipsoid resonant cavity to be measured; the main support system provides support for other structures, and the small ball wire pulling device, the coaxiality measuring device and the unit tuning system are used to realize the high-frequency characteristic measurement, coaxiality measurement and tuning of the multi-cell ellipsoid resonant cavity to be measured; the power supply device is used to provide energy support; the control system provides program control of the entire process of the automated tuning device, including parameter measurement, calculation and tuning. The device of the present invention realizes the testing and tuning of the multi-cell ellipsoid resonant cavity on the same platform, and the entire process is automated without human intervention, which greatly improves the efficiency and accuracy of tuning and ensures the efficient operation of the resonant cavity.

Description

Technical Field

[0001] The invention belongs to the technical field of electric field measurement, coaxiality measurement and tuning, and in particular relates to a fully automatic measurement and tuning device for a multi-cell ellipsoid resonant cavity. Background Art

[0002] Coaxiality is an important parameter to measure whether the various parts of a device are kept near a central axis. It involves the design and manufacturing accuracy of shaft parts. In high-precision systems, coaxiality needs to be measured and corrected.

[0003] The multi-cell ellipsoid resonator is a key device used in the accelerator field. It is a thin-walled structure formed by stamping parts and electron beam welding. It is composed of multiple unit resonators. There are inevitable deformations during the processing, such as unit tilt, eccentricity, and unit length deviation, which affect the frequency and axial electric field flatness of the ellipsoid resonator, thereby reducing the operating electric field gradient of the ellipsoid resonator. After the ellipsoid resonator is processed and formed, it must be tuned. The significance is to ensure that the multi-cell resonator has a flat axial electric field distribution so that it can work under high acceleration gradients. Therefore, measuring and tuning the multi-cell ellipsoid resonator is a key technology in the resonator manufacturing process.

[0004] The tuning methods disclosed in the prior art mainly include manual and semi-automatic tuning. Among them, manual tuning is to first suspend the multi-cell ellipsoid resonant cavity vertically or fix it horizontally, and use parallel clamps to stretch or compress each resonant cavity cell in turn. The advantage of this method is that it is simple to operate, does not require complex devices and fixtures, and can tune multi-cell ellipsoid resonant cavities of different sizes. However, the disadvantages of this method are still obvious, mainly the tuning accuracy is not high, the tuning time is long, the measurement is delayed, and the efficiency is low; the other is semi-automatic tuning, the Chinese patent application with application number 202310872065.4 and invention name "A semi-automatic pre-tuning device suitable for multi-cavity ellipsoidal superconducting cavity" discloses a semi-automatic tuning device. By introducing a software control system and a corresponding device, the efficiency of the adjustment can be improved, but there is still a defect that it is difficult to measure and tune simultaneously, and frequent manual intervention is required, and the accuracy and consistency of the tuning cannot be guaranteed.

[0005] Since the quality factor of the resonant cavity is high, the size and state of the cavity need to be adjusted very finely. How to quickly measure in real time and accurately adjust the measurement results to improve the performance of the resonant cavity is a technical problem that needs to be solved in this field. Summary of the invention

[0006] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and provide a fully automated measurement and tuning device for a polyhedral ellipsoid resonant cavity, which can complete the high-frequency characteristics and coaxiality measurement and tuning operations of the polyhedral ellipsoid resonant cavity in real time without human intervention, thereby ensuring the high efficiency and accuracy of tuning and significantly improving the operating performance of the polyhedral ellipsoid resonant cavity.

[0007] The technical problem proposed by the present invention is solved in this way:

[0008] A fully automated measuring and tuning device for a multi-cell ellipsoid resonant cavity, comprising a main support system 1, a small ball wire pulling device 2, a coaxiality measuring device 3, a unit tuning device 4, a power supply device 5, a control system and a multi-cell ellipsoid resonant cavity to be measured 6;

[0009] The main support system 1 includes a frame structure, a first slide rail 11 and a second slide rail 12; the first slide rail 11 is fixedly installed on the central axis of the upper surface of the frame structure, and two second slide rails 12 are symmetrically fixed on both sides of the first slide rail 11 and are parallel to the first slide rail 11;

[0010] The multi-cell ellipsoid resonant cavity 6 to be measured can slide along the first slide rail 11; the ball wire pulling device 2 passes through the multi-cell ellipsoid resonant cavity 6 to be measured, so as to measure the high-frequency characteristics of the multi-cell ellipsoid resonant cavity 6 to be measured;

[0011] The coaxiality measuring device 3 includes a measuring sensor 31, a fixing fixture 32, a lifting fixture 33, a lifting stepping motor 34, a rotating shaft stepping motor 35, a semicircular slide rail 36, a slide rail bracket 37 and a displacement sensor 38; a plurality of measuring sensors 31 are evenly distributed on the fixing fixture 32, the fixing fixture 32 is parallel to the central axis of the multi-cell ellipsoid resonant cavity 6 to be measured, and the two ends of the fixing fixture 32 are respectively fixedly installed on the connecting rod; the two lifting fixtures 33 are respectively located on the left and right sides of the connecting rod; one end of the left lifting fixture 33 is connected to the input port of the multi-cell ellipsoid resonant cavity 6 to be measured, and the other end is connected to the input port of the multi-cell ellipsoid resonant cavity 6 to be measured. The first lifting stepper motor is connected to the connecting rod; one end of the right lifting fixture 33 is connected to the output port of the multi-cell ellipsoid resonant cavity 6 to be measured, and the other end is connected to the connecting rod through the second lifting stepper motor. The lifting stepper motor 34 is used to control the lifting of the measuring sensor 31; one end of the shaft stepper motor 35 is connected to the left support rod, and the other end is connected to the left end of the connecting rod. The shaft stepper motor 35 is used to adjust the rotating shaft of the measuring sensor 31; the semicircular slide rail 36 is installed on the main support system 1 through the slide rail bracket 37; the two ends of the displacement sensor 38 are respectively connected to the right end of the connecting rod and the semicircular slide rail 36;

[0012] The unit tuning device 4 includes two tuning clamp sub-assemblies with the same structure and arranged in parallel and symmetrically; the tuning clamp sub-assembly includes a clamp 41, a tension and pressure plate 42, a track groove 43 and a tension and pressure plate stepper motor 44; the clamp 41 is hollow, and a slider 46 is provided at the bottom, and the slider 46 can slide along the second slide rail 12; round holes are opened at the top and bottom of the clamp 41, and screws pass through the round holes of the two clamps 41, and a spacing stepper motor 45 is located at the end of the screw for adjusting the relative distance between the two clamps 41; the track groove 43 is respectively located at the upper and lower parts of the left and right sides of the clamp 41; two tension and pressure plates 42 are installed between the upper track groove and the lower track groove on the same side of the clamp, and the two tension and pressure plates 42 are in a circular hollow rectangular shape when closed; the ends of the upper track groove and the lower track groove are respectively provided with a tension and pressure plate stepper motor 44, and the slide rod passes through the tension and pressure plate 42 and the tension and pressure plate stepper motor 44, and the left and right tension and pressure plates 42 are driven to open and close through the tension and pressure plate stepper motor 44 and the slide rod;

[0013] The power supply device 5 is used to provide power support for the unit tuning device 4 and the small ball wire pulling device 2, and to provide power support for the rotation and measurement of the coaxiality measuring device 3 and the movement of the multi-cell ellipsoid resonant cavity 6 to be measured;

[0014] The control system is used to control the movement of the small ball pulling device 2, the movement of the multi-cell ellipsoid resonant cavity 6 to be measured, the lifting and rotation of the measuring sensor 31, receive the collected data of the measuring sensor 31 and the displacement sensor 38, complete the calculation of coaxiality and high-frequency characteristics, and automatically control the movement of the unit tuning device 4 and the opening and closing state of the tension and compression plate 42 according to the coaxiality calculation result.

[0015] Furthermore, in the main support system 1, the frame structure is a frame structure of an aluminum alloy profile.

[0016] Furthermore, the small ball pulling device 2 includes a counterweight 21, a first pulley 22, a second pulley 23, a third pulley 24, a winding wheel 25, a straight thin wire 26, a small ball 27 for perturbation and a support rod 28; the support rod 28 is fixed to the left and right ends of the central axis of the upper surface of the frame structure and extends upward; the first pulley 22, the second pulley 23 and the third pulley 24 are located on the left support rod, and the winding wheel 25 is located on the right support rod; the straight thin wire passes through the first pulley 22, the second pulley 23 and the third pulley 24, one end of which is connected to the counterweight 21, and the other end is connected to the winding wheel 25; the small ball 27 for perturbation is located on the straight thin wire 26, and the straight thin wire 26 is coaxial with the multi-cell ellipsoid resonant cavity 6 to be measured.

[0017] Furthermore, the line between the axis of the rotating shaft stepping motor 35 and the center of the semicircular slide rail 36 is coaxial with the multi-cell ellipsoid resonant cavity 6 to be measured.

[0018] Furthermore, the measuring sensor 31 is a laser ranging sensor.

[0019] Furthermore, the radius of the semicircular slide rail 36 is larger than the outer diameter of the multi-cell ellipsoid resonant cavity 6 to be measured.

[0020] Furthermore, the multi-cell ellipsoid resonant cavity 6 to be tested includes an input port, a plurality of unit cavities 61 and an output port cascaded in sequence, and also includes a support bracket and a sliding base 64; both ends of the unit cavity 61 are provided with reinforcing ribs 601, and adjacent unit cavities 61 are cascaded through the reinforcing ribs 601; the unit cavities 61 and the support brackets correspond one-to-one to ensure the stability of the multi-cell ellipsoid resonant cavity 6 to be tested, and the support brackets include a soft support body 62 and a support bracket 63; the bottom of the support bracket 63 is fixedly connected to the sliding base 64, and the top is fixedly connected to the soft support body 62, which is used to support the unit cavity 61; the sliding base 64 is in contact with the first slide rail 11 of the main support system 1.

[0021] Furthermore, when the tension and compression plate 42 is in an open state, the hollow portion allows the multi-cell ellipsoid resonant cavity 6 to be tested to pass through; when the tension and compression plate 42 is in a closed state, the diameter of the hollow portion is consistent with the reinforcing rib 601 of the multi-cell ellipsoid resonant cavity 6 to be tested.

[0022] The beneficial effects of the present invention are:

[0023] The fully automated measuring and tuning device for the multi-cell ellipsoid resonant cavity of the present invention can quickly obtain various performance indicators of the multi-cell ellipsoid resonant cavity to be measured, including high-frequency characteristics and coaxial characteristics, through a small ball wire pulling device and a coaxiality measuring device; a tuning scheme for the multi-cell ellipsoid resonant cavity can be generated according to the program setting of the control system, and the tuning of the multi-cell ellipsoid resonant cavity can be achieved by controlling the unit tuning system; tuning and measurement can be implemented alternately to improve tuning accuracy; the entire process does not require human control, and the full process automation of measurement and tuning of the multi-cell ellipsoid resonant cavity can be achieved, thereby improving tuning efficiency and tuning accuracy; and rapid and real-time action on the resonant cavity tuning body can be achieved, so that it meets the physical parameter requirements and ensures the performance and effect of the resonant cavity.

[0024] In summary, the device described in the present invention can achieve fast, high-precision, and fully automated tuning of the ellipsoidal resonant cavity; it can complete the high-frequency characteristics and coaxiality measurement and tuning operations of the multi-cell ellipsoidal resonant cavity in real time without human intervention, ensuring the efficiency, consistency, and accuracy of the tuning, and significantly improving the operating performance of the multi-cell ellipsoidal resonant cavity; the entire tuning process can be dynamically adjusted according to real-time measurement data, thereby further improving the performance of the resonant cavity, enabling it to work stably under high acceleration gradients. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the fully automated measurement and tuning device of the multi-cell ellipsoid resonant cavity of the present invention;

[0026] Figure 2 It is a structural schematic diagram of the small ball wire pulling device in the device of the present invention;

[0027] Figure 3 It is a schematic diagram of the structure of the coaxiality measuring device and the multi-cell ellipsoid resonant cavity to be measured in the device of the present invention;

[0028] Figure 4 It is a schematic diagram of the structure of the unit tuning device in the device of the present invention from the right side perspective;

[0029] Figure 5 It is a structural schematic diagram of the unit tuning device in the device of the present invention from the left side perspective;

[0030] Figure 6 It is a schematic diagram of the structure of the unit tuning device in the device of the present invention when the tension and compression plate is opened.

[0031] The reference numerals involved in the drawings are as follows: 1-main support system, 2-small ball pulling device, 3-coaxiality measuring device, 4-unit tuning device, 5-power supply equipment, 6-multi-cell ellipsoid resonant cavity to be measured, 11-first slide rail, 12-second slide rail, 21-counterweight, 22-first pulley, 23-second pulley, 24-third pulley, 25-winding wheel, 26-straight thin wire, 27-small ball, 31-measuring sensor, 32-fixing fixture, 33-lift Lowering fixture, 34-lifting stepper motor, 35-rotating shaft stepper motor, 36-semicircular slide rail, 37-slide rail bracket, 38-displacement sensor, 41-clamp, 42-pull and pressure plate, 43-track groove, 44-pull and pressure plate stepper motor, 45-pitch stepper motor, 46-slider, 61-unit cavity, 62-soft support body, 63-support bracket, 64-sliding base, 421-first pull and pressure plate, 422-second pull and pressure plate, reinforcing rib 601. DETAILED DESCRIPTION

[0032] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0033] This embodiment provides a fully automated measurement and tuning device for a multi-cell ellipsoidal resonant cavity, and its overall structural diagram is shown in FIG. Figure 1 As shown, it includes a main support system 1, a small ball pulling device 2, a coaxiality measuring device 3, a unit tuning device 4, a power supply device 5, a control system and a multi-cell ellipsoid resonant cavity 6 to be measured.

[0034] The main support system 1 includes a frame structure, a first slide rail 11 and a second slide rail 12; the frame structure is an aluminum alloy profile frame structure, which is used to assemble measurement and tuning devices; the first slide rail 11 is fixedly installed on the central axis of the upper surface of the frame structure, and the two second slide rails 12 are symmetrically fixed on both sides of the first slide rail 11 and are parallel to the first slide rail 11.

[0035] The ball-pull-wire device 2 includes a counterweight 21, a first pulley 22, a second pulley 23, a third pulley 24, a winding wheel 25, a straight thin wire 26, a ball for perturbation and a support rod; the support rod is fixed to the left and right ends of the central axis of the upper surface of the frame structure and extends upward; the first pulley 22, the second pulley 23 and the third pulley 24 are located on the left support rod, and the winding wheel 25 is located on the right support rod; the straight thin wire 26 passes through the first pulley 22, the second pulley 23 and the third pulley 24, one end is connected to the counterweight 21, and the other end is connected to the winding wheel 25; the ball for perturbation is located on the straight thin wire 26, and the straight thin wire 26 is coaxial with the multi-cell ellipsoid resonant cavity 6 to be measured. These components can make the thin wire in a taut state and can be moved as needed to provide the perturbation requirements required for high-frequency performance measurement. The ball-pull-wire device 2 is used to provide intracavity perturbation for the multi-cell ellipsoid resonant cavity 6 to be measured, so as to measure its high-frequency characteristics. The winding wheel 25 is equipped with a driving motor, and driven by the driving motor, the ball 27 can slowly move in the multi-cell ellipsoid resonant cavity 6 to be tested. The movement of the ball 27 will cause a slight disturbance to the distribution of the electric field in the resonant cavity. The vector network analyzer is connected to the input and output ports of the multi-cell ellipsoid resonant cavity 6 to be tested for real-time monitoring, thereby achieving the effect of measuring its high-frequency characteristics.

[0036] like Figure 3 As shown, the coaxiality measuring device 3 includes a measuring sensor 31, a fixing fixture 32, a lifting fixture 33, a lifting stepping motor 34, a rotating shaft stepping motor 35, a semicircular slide rail 36, a slide rail bracket 37 and a displacement sensor 38; a number of measuring sensors 31 are evenly distributed on the fixing fixture 32, the fixing fixture 32 is parallel to the central axis of the multi-cell ellipsoid resonant cavity 6 to be measured, and the two ends of the fixing fixture 32 are respectively fixedly installed on the connecting rod; the two lifting fixtures 33 are respectively located on the left and right sides of the connecting rod; one end of the left lifting fixture 33 is connected to the input port of the multi-cell ellipsoid resonant cavity 6 to be measured, and the other end is connected to the connecting rod through the first lifting stepping motor; one end of the right lifting fixture 33 is connected to the output port of the multi-cell ellipsoid resonant cavity 6 to be measured, and the other end is connected to the connecting rod through the second lifting stepping motor. The lifting stepper motor 34 is used to control the lifting and lowering of the measuring sensor 31; one end of the rotating shaft stepper motor 35 is connected to the left support rod, and the other end is connected to the left end of the connecting rod. The rotating shaft stepper motor 35 is used to adjust the rotating shaft of the measuring sensor 31; the semicircular slide rail 36 is installed on the main support system 1 through the slide rail bracket 37; the two ends of the displacement sensor 38 are respectively connected to the right end of the connecting rod and the semicircular slide rail 36; the connecting line between the axis of the rotating shaft stepper motor 35 and the center of the semicircular slide rail 36 is coaxial with the multi-cell ellipsoid resonant cavity 6 to be measured; the rotation angle of the coaxiality measuring device 3 can exceed 180°; the displacement sensor 38 is used to measure the movement amount, and the rotation displacement of the measuring sensor 31 can be fed back to the control system through this sensor to obtain a more accurate coaxial measurement result.

[0037] The measuring sensor 31 is a contact sensor or a non-contact sensor, and the data interface of the measuring sensor 31 is connected to a data acquisition card connected to the control system through a cable to report the measurement data result. Obviously, the complete state of the multi-cell ellipsoid resonant cavity 6 to be measured can be measured at one time through multiple sensors.

[0038] The right side view structure diagram and the left side view structure diagram of the unit tuning device 4 are respectively as shown in FIG. Figure 4 and Figure 5 As shown, it includes two tuning clamp sub-assemblies with the same structure and arranged in parallel and symmetrically; the tuning clamp sub-assembly includes a clamp 41, a tension and pressure plate 42, a track groove 43 and a tension and pressure plate stepper motor 44; the clamp 41 is hollow, and a slider 46 is provided at the bottom, and the slider 46 can slide along the second slide rail 12; round holes are opened at the top and bottom of the clamp 41, and screws pass through the round holes of the two clamps 41, and a spacing stepper motor 45 is located at the end of the screw for adjusting the relative distance between the two clamps 41; the track groove 43 is respectively located at the upper and lower parts of the left and right sides of the clamp 41; between the upper track groove and the lower track groove on the same side of the clamp, two tension and pressure plates 42 are installed, and the two tension and pressure plates 42 are in a circular hollow rectangular shape when closed; the ends of the upper track groove and the lower track groove are respectively provided with tension and pressure plate stepper motors 44, and the slide rod passes through the tension and pressure plate 42 and the tension and pressure plate stepper motor 44, and the left and right tension and pressure plates 42 are driven to open and close through the tension and pressure plate stepper motor 44 and the slide rod. The slider 46 is equipped with a stepping motor, which controls the unit tuning device 4 to move to a set position through a control system to tune the unit cavity of the multi-cell ellipsoid resonant cavity 6 to be tested that needs to be tuned.

[0039] like Figure 3 As shown, the multi-cell ellipsoid resonant cavity 6 to be tested includes an input port, a plurality of unit cavities 61 and an output port cascaded in sequence, and also includes a support bracket and a sliding base 64; both ends of the unit cavity 61 are provided with reinforcing ribs 601, and adjacent unit cavities 61 are cascaded through the reinforcing ribs 601; the unit cavities 61 and the support brackets correspond one to one to ensure the stability of the multi-cell ellipsoid resonant cavity 6 to be tested, and the support brackets include a soft support body 62 and a support bracket 63; the bottom of the support bracket 63 is fixedly connected to the sliding base 64, and the top is fixedly connected to the soft support body 62, which is used to support the unit cavity 61; the sliding base 64 contacts the first slide rail 11 of the main support system 1, so that the multi-cell ellipsoid resonant cavity 6 to be tested can slide along the first slide rail 11. A stepping motor is installed on the sliding base 64 to control the movement of the multi-cell ellipsoid resonant cavity 6 to be tested.

[0040] The middle of the semicircular slide rail 36 is a circular hole, the diameter of which is slightly larger than the outer diameter of the multi-cell ellipsoid resonant cavity 6 to be tested, so that the multi-cell ellipsoid resonant cavity 6 to be tested can be moved to the tuning device area through the circular hole for tuning.

[0041] In this embodiment, there are tension and compression plates 42 on both sides of the clamping plate 41, and the spacing between the tension and compression plates 42 on both sides is consistent with or slightly larger than the thickness of the unit cavity of the multi-cell ellipsoid resonant cavity 6 to be tested, and the spacing between the tension and compression plates 42 on the inner side of the two clamping plates 41 is consistent with or slightly larger than the thickness of the unit cavity 61 of the multi-cell ellipsoid resonant cavity 6 to be tested, so that the posture of the unit cavity of the adjacent multi-cell ellipsoid resonant cavity can be flexibly adjusted. The unit tuning device 4 is provided with a tuning displacement sensor and a pressure sensor, and the alarm limit is set by the control system. When the alarm limit is reached, the rotation of the stepper motor is stopped immediately to avoid damage to the multi-cell ellipsoid resonant cavity.

[0042] Figure 6 The state diagram of the unit tuning device 4 when the first tension and pressure plate 421 and the second tension and pressure plate 422 are opened, when the first tension and pressure plate 421 and the second tension and pressure plate 422 are opened, the space in the middle can ensure the free movement of the multi-cell ellipsoid resonant cavity 6 to be tested, or can ensure the movement of the unit tuning device 4, so as to tune other unit cavities, thereby realizing the tuning of all resonant cavities. The tension and pressure plate 42 between the track grooves on the same side is divided into a first tension and pressure plate 421 and a second tension and pressure plate 422. When the first tension and pressure plate 421 and the second tension and pressure plate 422 are close together, the hollowing in the middle is consistent with or slightly larger than the diameter of the reinforcing rib 601 of the multi-cell ellipsoid resonant cavity 6 to be tested, ensuring that the tension and pressure plate can adjust the state of the multi-cell ellipsoid resonant cavity unit by stretching or compressing. The unit tuning system can also be quickly moved to other ellipsoid unit resonant cavities, and other ellipsoid unit resonant cavities are stretched and compressed. The number of clamps and tension and pressure plates depends on the tuning requirements. The movement of the clamping plate and the tension and pressure plate on the unit tuning system can be controlled by a corresponding stepper motor, and can be accurately moved to the corresponding position through the program setting of the control system.

[0043] The power supply device 5 includes a first device box 51 and a second device box 52, which are installed on the side of the main support system 1. The first device box 51 provides power support for the unit tuning device 4 and the small ball wire pulling device 2, and the second device box 52 provides power support for the rotation and measurement of the coaxiality measuring device 3 and the movement of the multi-cell ellipsoid resonant cavity 6 to be measured.

[0044] The control system is used to control the movement of the small ball pulling device 2, the movement of the multi-cell ellipsoid resonant cavity 6 to be measured, the lifting and rotation of the measuring sensor 31, receive the collected data of the measuring sensor 31 and the displacement sensor 38, complete the calculation of coaxiality and high-frequency characteristics, and automatically control the movement of the unit tuning device 4 and the opening and closing state of the tension and compression plate 42 according to the coaxiality calculation result.

[0045] In this embodiment, the main support system 1 is constructed of aluminum alloy to ensure the stability and pressure resistance of the device. The ball wire pulling device 2 accurately controls the displacement and tension of the ball through a stepper motor, and the counterweight block ensures that the straight thin wire is in a constant tension state. The control system obtains the sensor data of the coaxiality measuring device in real time through a multi-channel data acquisition card, and calculates the optimal tuning parameters through algorithm processing, automatically controls the position and pressure of the tuning splint, and realizes precise tuning.

[0046] As the core of the entire automation process, the control system is responsible for managing all measurement and tuning processes. The system collects sensor data in real time, analyzes the current state of the resonant cavity, generates a tuning plan, and commands the tuning device to accurately adjust the physical parameters of the resonant cavity. The advantage of the control system is that it realizes the function of tuning while measuring, which greatly improves the tuning accuracy and work efficiency, and avoids the delay and error in manual tuning.

[0047] Compared with the prior art, the inventive concept of the device described in this embodiment is to realize the measurement and tuning of the ellipsoidal resonant cavity on the same platform, which can realize measurement and adjustment at the same time, and can know the tuning status in time, and achieve the tuning effect simply and quickly; the whole process can be controlled by the control system software without human intervention, so that the whole process can be automated.

[0048] The above specific examples are used to illustrate the present invention, which is only used to help understand the present invention and is not intended to limit the present invention. For technicians in the technical field to which the present invention belongs, some simple deductions, deformations or substitutions can be made based on the ideas of the present invention. All simple, equivalent changes and modifications made according to the claims and description of the present invention application fall within the scope of protection of the claims of the present invention patent. The contents not described in detail in the present invention are all conventional technical contents.

Claims

1. A fully automated measurement and tuning device for a multi-cell ellipsoidal resonant cavity, characterized in that: It comprises a main support system (1), a small ball pulling device (2), a coaxiality measuring device (3), a unit tuning device (4), a power supply device (5), a control system and a multi-cell ellipsoid resonant cavity to be measured (6); The main support system (1) comprises a frame structure, a first slide rail (11) and a second slide rail (12); the first slide rail (11) is fixedly mounted on the central axis of the upper surface of the frame structure, and the two second slide rails (12) are symmetrically fixed on both sides of the first slide rail (11) and are parallel to the first slide rail (11); The multi-cell ellipsoid resonant cavity (6) to be tested can slide along the first slide rail (11); the small ball wire pulling device (2) passes through the multi-cell ellipsoid resonant cavity (6) to be tested, thereby achieving high-frequency characteristic measurement of the multi-cell ellipsoid resonant cavity (6) to be tested; The ball-pulling device (2) comprises a counterweight (21), a first pulley (22), a second pulley (23), a third pulley (24), a winding wheel (25), a straight thin wire (26), a ball (27) for perturbation and a support rod (28); the support rod (28) is fixed to the left and right ends of the central axis of the upper surface of the frame structure and extends upward; the first pulley (22), the second pulley (23) and the third pulley (24) are located on the left support rod, and the winding wheel (25) is located on the right support rod; the straight thin wire passes through the first pulley (22), the second pulley (23) and the third pulley (24), one end of which is connected to the counterweight (21) and the other end of which is connected to the winding wheel (25); the ball (27) for perturbation is located on the straight thin wire (26), and the straight thin wire (26) is coaxial with the multi-cell ellipsoid resonant cavity (6) to be measured; The coaxiality measuring device (3) comprises a measuring sensor (31), a fixing fixture (32), a lifting fixture (33), a lifting stepping motor (34), a rotating shaft stepping motor (35), a semicircular slide rail (36), a slide rail bracket (37) and a displacement sensor (38); a plurality of measuring sensors (31) are evenly distributed on the fixing fixture (32); the fixing fixture (32) is parallel to the central axis of the multi-cell ellipsoid resonant cavity (6) to be measured; both ends of the fixing fixture (32) are respectively fixedly mounted on a connecting rod; two lifting fixtures (33) are respectively located on the left and right sides of the connecting rod; one end of the left lifting fixture (33) is connected to the input port of the multi-cell ellipsoid resonant cavity (6) to be measured , and the other end is connected to the connecting rod through a first lifting stepper motor; one end of the right lifting fixture (33) is connected to the output port of the multi-cell ellipsoid resonant cavity (6) to be measured, and the other end is connected to the connecting rod through a second lifting stepper motor, and the lifting stepper motor (34) is used to control the lifting of the measuring sensor (31); one end of the shaft stepper motor (35) is connected to the left support rod, and the other end is connected to the left end of the connecting rod, and the shaft stepper motor (35) is used to adjust the rotating shaft of the measuring sensor (31); the semicircular slide rail (36) is installed on the main support system (1) through the slide rail bracket (37); the two ends of the displacement sensor (38) are respectively connected to the right end of the connecting rod and the semicircular slide rail (36); The unit tuning device (4) comprises two tuning clamping plate subassemblies of the same structure and arranged in parallel and symmetrically; the tuning clamping plate subassembly comprises a clamping plate (41), a tension plate (42), a track groove (43) and a tension plate stepping motor (44); the clamping plate (41) is hollow and has a slider (46) at the bottom, and the slider (46) can slide along the second slide rail (12); round holes are opened at the top and bottom of the clamping plate (41), and screws pass through the round holes of the two clamping plates (41); a spacing stepping motor (45) is located at the end of the screw and is used to adjust the spacing between the two clamping plates (41). The relative distance between the two ends of the upper and lower rail grooves (43) is respectively located at the upper and lower parts of the left and right sides of the clamping plate (41); between the upper rail groove and the lower rail groove on the same side of the clamping plate, two tension and pressure plates (42) are installed, and the two tension and pressure plates (42) are in a circular hollow rectangular shape when closed; the ends of the upper rail groove and the lower rail groove are respectively provided with tension and pressure plate stepping motors (44), and the sliding rod passes through the tension and pressure plate (42) and the tension and pressure plate stepping motor (44), and the left and right tension and pressure plates (42) are driven to open and close through the tension and pressure plate stepping motor (44) and the sliding rod; A power supply device (5) is used to provide power support for the unit tuning device (4) and the small ball wire pulling device (2), and to provide power support for the rotation and measurement of the coaxiality measuring device (3) and the movement of the multi-cell ellipsoid resonant cavity (6) to be measured; The control system is used to control the movement of the ball wire pulling device (2), the movement of the multi-cell ellipsoid resonant cavity (6) to be measured, the lifting and rotation of the measuring sensor (31), receive the collected data of the measuring sensor (31) and the displacement sensor (38), complete the calculation of coaxiality and high-frequency characteristics, and automatically control the movement of the unit tuning device (4) and the opening and closing state of the tension and pressure plate (42) according to the coaxiality calculation result.

2. The fully automated measurement and tuning device for a multi-cell ellipsoidal resonator according to claim 1, characterized in that: In the main support system (1), the frame structure is a frame structure of aluminum alloy profiles.

3. The fully automated measurement and tuning device for a multi-cell ellipsoidal resonator according to claim 1, characterized in that: The line connecting the axis center of the rotating shaft stepping motor (35) and the center of the semicircular slide rail (36) is coaxial with the multi-cell ellipsoid resonant cavity (6) to be measured.

4. The fully automated measurement and tuning device for a multi-cell ellipsoidal resonant cavity according to claim 1, characterized in that: The measuring sensor (31) is a laser distance measuring sensor.

5. The fully automated measurement and tuning device for a multi-cell ellipsoidal resonator according to claim 1, characterized in that: The radius of the semicircular slide rail (36) is greater than the outer diameter of the multi-cell ellipsoid resonant cavity (6) to be measured.

6. The fully automated measurement and tuning device for a multi-cell ellipsoidal resonator according to claim 1, characterized in that: The multi-cell ellipsoid resonant cavity (6) to be tested comprises an input port, a plurality of unit cavities (61) and an output port which are cascaded in sequence, and also comprises a support bracket and a sliding base (64); both ends of the unit cavities (61) are provided with reinforcing ribs (601), and adjacent unit cavities (61) are cascaded via the reinforcing ribs (601); the unit cavities (61) and the support bracket correspond one to one to ensure the stability of the multi-cell ellipsoid resonant cavity (6) to be tested, and the support bracket comprises a soft support body (62) and a support bracket (63); the bottom of the support bracket (63) is fixedly connected to the sliding base (64), and the top is fixedly connected to the soft support body (62), and is used to support the unit cavities (61); the sliding base (64) is in contact with a first slide rail (11) of the main support system (1).

7. The fully automated measurement and tuning device for a multi-cell ellipsoidal resonator according to claim 6, characterized in that: When the tension and compression plate (42) is in an open state, the hollow portion enables the multi-cell ellipsoid resonant cavity (6) to be tested to pass through; when the tension and compression plate (42) is in a closed state, the diameter of the hollow portion is consistent with the reinforcing rib (601) of the multi-cell ellipsoid resonant cavity (6) to be tested.

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