CN211685681U - Vibrating table moving coil centering device in centrifugal field - Google Patents
Vibrating table moving coil centering device in centrifugal field Download PDFInfo
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- CN211685681U CN211685681U CN202020129124.0U CN202020129124U CN211685681U CN 211685681 U CN211685681 U CN 211685681U CN 202020129124 U CN202020129124 U CN 202020129124U CN 211685681 U CN211685681 U CN 211685681U
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Abstract
The utility model discloses a centering device for a moving coil of a vibrating table in a centrifugal field, which comprises a vibrating table body structure, an electromagnetic centering device and a guide rod; the test piece is arranged on a table body structure of the vibration table and is subjected to vibration test along the axial direction of the arm of the centrifuge; the electromagnetic centering device comprises a rotor system and a stator system; the stator system is fixedly arranged on a mechanical arm of the centrifuge, the first end of the guide rod is connected with the table body structure of the vibrating table, the rotor system is connected with the second end of the guide rod, electromagnetic force generated between the stator system and the rotor system acts on the rotor system, the electromagnetic force applied to the rotor system and the centrifugal force applied to the test piece are on the same straight line, and the directions are opposite; the utility model discloses a device well cooperation of moving subsystem and deciding the subsystem in the electromagnetism produces the electromagnetic force to act on shaking table stage body structure through the guide arm, make shaking table stage body structure carry out the axial action as required, thereby realize the centering of shaking table movable coil in the centrifugal field and adjust, response speed is very fast.
Description
Technical Field
The utility model belongs to the technical field of the shaking table movable coil is well made among the compound test system of vibration centrifugation, device is well made to the shaking table movable coil among the concretely relates to centrifugal field.
Background
In order to expose failure modes of a flying product, a sufficiently effective ground environment simulation test needs to be conducted. The acceleration and vibration composite test is one of important composite environment tests required by an aircraft, the existing ground test mainly uses vibration centrifugal composite test equipment (vibration centrifugal machine) to simulate the simultaneous action of two loads of vibration and acceleration, the vibration centrifugal machine simulates the overload of a flight environment by the inertia force generated by the rotation of the centrifugal machine, and the vibration load of the flight environment is realized by a vibration excitation platform arranged on a machine arm of the centrifugal machine. Among present vibration centrifuge, the shaking table mostly is in the same direction as the arm installation, and the moving coil of shaking table will deviate central equilibrium position and unable normal excitation under the centrifugal force effect at centrifuge during operation. Therefore, under different acceleration environments and different mass loading conditions, a centering technique for keeping the moving coil of the vibration table at a central balance position is important.
The current moving coil centering methods mainly include a counterweight centering method and an air (hydraulic) spring centering method. Different counterweights need to be manufactured for test pieces with different masses by the counterweight centering method, and the counterweights become extra loads of the vibration table, so that the effective load of the vibration table is greatly influenced, and the counterweight centering method is suitable for centering of the small-load moving coil. The air (hydraulic) spring centering method adopts a position sensor to detect the displacement signal of the table top relative to the table body and send the signal to a servo valve, controls the air pressure of two air chambers and pushes a piston to move left and right, so that a moving coil of the vibration table returns to a balance position, and the centering speed of the method is limited by the capacity of the pneumatic servo valve.
In order to solve the problems, the inventor provides a vibrating table moving coil centering device in a centrifugal field.
Disclosure of Invention
The object of the present invention is to provide a centering device for a moving coil of a vibrating table in a centrifugal field.
The utility model discloses a following technical scheme realizes above-mentioned purpose:
shaking table moving coil centering device in centrifugal field includes:
a table body structure of the vibration table; the test piece is arranged on a table body structure of the vibration table and is subjected to vibration test along the axial direction of the arm of the centrifuge;
an electromagnetic centering device;
a guide bar; the electromagnetic centering device comprises a rotor system and a stator system; the stator system is fixedly arranged on a mechanical arm of the centrifuge, the first end of the guide rod is connected with the table body structure of the vibrating table, the rotor system is connected with the second end of the guide rod, electromagnetic force is generated between the stator system and the rotor system, and the electromagnetic force received by the rotor system and the centrifugal force received by the test piece are on the same straight line and opposite in direction.
The beneficial effects of the utility model reside in that:
the utility model discloses a device well cooperation of moving subsystem and deciding the subsystem in the electromagnetism produces the electromagnetic force to act on shaking table stage body structure through the guide arm, make shaking table stage body structure carry out the axial action as required, thereby realize the centering of shaking table movable coil in the centrifugal field and adjust, response speed is very fast.
Drawings
FIG. 1 is a schematic illustration of the electromagnetic centering method of the present application;
FIG. 2 is a schematic diagram of the structure of the electromagnetic centering device of the present application;
FIG. 3 is a perspective cross-sectional view of an electromagnetic centering device of the present application;
fig. 4 is a schematic diagram of centering control in the present application.
In the figure: 1. a test piece; 2. a work table; 3. an upper guide rail; 4. a first drive coil; 5. a first magnetic flux circuit; 6. a first excitation coil; 7. a base; 8. a guide bar; 10. a mover system; 11. a stator system; 12. a second excitation coil; 13. a second flux circuit; 14. a second drive coil; 15. a lower guide rail; 21. a rear end flange; 22. an axial magnet; 23. a radial magnet; 24. a stator core; 25. a winding coil; 26. a housing; 27. a front end flange; 28. a front end shaft sleeve; 29. a front end spring; 30. a mover core; 31. a rear end spring; 32. the rear end shaft sleeve.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
as shown in fig. 1, the device for centering the moving coil of the vibration table in the centrifugal field comprises:
a table body structure of the vibration table; the test piece 1 is arranged on a table body structure of the vibration table and is subjected to vibration test along the axial direction of a machine arm of the centrifugal machine;
an electromagnetic centering device;
a guide rod 8; the electromagnetic centering device comprises a rotor system 10 and a stator system 11; the stator system 11 is fixedly installed on a centrifuge arm, a first end of the guide rod 8 is connected with a table body structure of the vibrating table, the rotor system 10 is connected with a second end of the guide rod 8, and electromagnetic force generated between the stator system 11 and the rotor system 10 and centrifugal force applied to the test piece 1 are on the same straight line and opposite in direction.
In this embodiment, the electromagnetic force is generated by the cooperation of the rotor system 10 and the stator system 11, and acts on the table body structure of the vibration table through the guide rod 8, so that the table body structure of the vibration table axially acts as required, and the centering adjustment of the moving coil of the vibration table is realized.
As shown in fig. 1, the table body structure of the vibration table comprises:
a working table surface 2; the test piece 1 is arranged on the first end of the working table surface 2, and the first end of the guide rod 8 is connected with the second end of the working table surface 2;
a first driving coil 4;
a second drive coil 14; the second end of the worktable surface 2 is respectively connected with a first driving coil 4 and a second driving coil 14;
a first excitation coil 6; the first excitation coil 6 is disposed below the first driving coil 4; the first excitation coil 6 generates a first magnetic flux loop 5, and the first driving coil 4 is placed in the first magnetic flux loop 5;
a second excitation coil 12; the second excitation coil 12 is disposed below the second driving coil 14, the second excitation coil 12 generates a second magnetic flux circuit 13, and the second driving coil 14 is placed in the second magnetic flux circuit 13.
In the embodiment, the worktable 2, the first driving coil 4 and the second driving coil 14 form a vibrating table moving coil, and the special structural arrangement enables the vibrating table moving coil to generate vibration in the vertical direction of the worktable 2; the centrifugal force generated by the centrifuge is perpendicular to the working table surface 2 and faces outwards, and the direction of the electromagnetic force generated by the electromagnetic centering device is opposite to the centrifugal force, so that the centering of the vibrating table moving coil in the centrifugal field can be realized by controlling the magnitude of the electromagnetic force of the electromagnetic centering device. The test piece 1 vibrates under the cooperation of the vibrating table moving coil, the first exciting coil 6 and the second exciting coil 12.
As shown in fig. 1, the table body structure of the vibration table further includes:
a base 7; the base 7 is fixed on the arm of the centrifuge, a through hole is arranged on the base 7, and the second end of the guide rod 8 penetrates through the through hole on the base 7.
As shown in fig. 1, the table body structure of the vibration table further includes:
an upper rail 3, a lower rail 15; the second end of the working table top 2 is connected with a first driving coil 4 through a first connecting rod; the second end of the work table 2 is connected with a second driving coil 14 through a second connecting rod; an upper guide rail 3 is arranged on one side of the first connecting rod; on one side of the second connecting rod a lower guide rail 15 is arranged, the upper guide rail 3 and the lower guide rail 15 being intended to support the work top 2.
As shown in fig. 2 and 3, the stator system 11 includes:
a stator core 24 formed in a hollow cylindrical structure;
a winding coil 25; the winding coils 25 are uniformly wound among the gaps of the stator core 24 and are distributed along the axial direction;
the mover system 10 includes:
a plurality of annular axial magnets 22;
a plurality of annular radial magnets 23; a plurality of axial magnets 22 and a plurality of radial magnets 23 are arranged in a crossed manner to form a Halbach magnetic pole array structure;
the mover core 30; the Halbach magnetic pole array structure is arranged between the stator core 24 and the rotor core 30 and is fixedly connected with the outer wall of the rotor core 30; the mover core 30 is connected to the second end of the guide rod 8; the magnetic field generated by the electrified winding coil 25 acts on the Halbach magnetic pole array structure, the generated electromagnetic force acts on the Halbach magnetic pole array structure and the rotor iron core 30, and the electromagnetic force and the centrifugal force applied to the test piece 1 are on the same straight line and opposite in direction.
As shown in fig. 4, in the present embodiment, the magnitude of the electromagnetic force provided by the electromagnetic centering device depends on the magnitude of the current in the winding coil 25, so the centering control based on the electromagnetic force is to realize the moving coil centering of the vibrating table body structure by controlling the input current of the winding coil 25. The input current of the winding coil 25 consists of two components, on one hand, the input current is in direct proportion to the product of the mass of the movable part of the table body structure of the vibration table and the overload borne; on the other hand, when the movable coil of the electromagnetic centering device deviates from the balance position due to the action of centrifugal force on the table body structure of the vibration table, the position of the movable coil of the vibration table is adjusted in real time by taking the deviation displacement as input and adopting PID feedback control. Under the condition of a constant input current, the mover system 10 can move freely within the designed stroke range, and the moving coil centering of the vibration table is realized without blocking the vibration output of the vibration table.
The electromagnetic centering device is designed to be cylindrical, the design structure is compact, the winding utilization rate is high, radial forces between the rotor system 10 and the stator system 11 are mutually offset, and the influence of friction force during movement can be reduced.
As shown in fig. 2 and 3, the stator system 11 further includes a front end flange 27, a rear end flange 21, a housing 26;
mover system 10 further includes a spring;
the rear end flange 21 is fixedly arranged on a centrifuge arm, the shell 26 is formed into a hollow cylinder structure, the first end of the shell 26 is connected with the rear end flange 21, the second end of the shell 26 is connected with the front end flange 27, and the shell 26 is wrapped outside the stator core 24;
a through hole is formed inside the mover core 30;
a rear end shaft sleeve 32 is installed inside the first end of the mover core 30; the rear end shaft sleeve 32 is slidably sleeved on the side wall of the rod-shaped part protruding inwards of the rear end flange 21;
a front end shaft sleeve 28 is installed inside the second end of the rotor core 30; the front end shaft sleeve 28 is slidably sleeved on the side wall of the rod-shaped part protruding inwards of the front end flange 27;
the spring is arranged in the rotor iron core 30, and two ends of the spring are respectively connected with the rod-shaped part protruding inwards of the rear end flange 21 and the rod-shaped part protruding inwards of the front end flange 27;
an opening is provided on the rear end flange 21, and a second end of the guide rod 8 passes through the opening to be connected with the mover core 30.
In this embodiment, four arc-shaped openings are preferably arranged in a circular shape, the four arc-shaped openings are uniformly distributed, and the second end of the guide rod 8 is matched with the four arc-shaped openings in shape to form four arc-shaped cylinders which respectively penetrate the four arc-shaped openings and are then connected with four positions of the rotor core 30.
In this embodiment, the rear end flange 21 and the front end flange 27 are both fixedly connected to the housing 26 through screws, and the housing 26 is fixedly connected to the stator core 24 through screws;
in this embodiment, the energized winding coil 25 generates N, S magnetic poles on the stator teeth of the stator core 24, and the magnetic poles and the mover system 10 generate an interactive magnetic force to form an axial output force, so that the moving coil centering of the vibrating table with different acceleration values can be completed by adjusting the magnitude of the input current of the winding coil 25. The front end shaft sleeve 28 and the rear end shaft sleeve 32 are respectively used for radial limiting and supporting of two ends of the rotor core 30, and the spring is used for axial limiting stroke and restoring the initial position of the rotor core, so that the output force of the electromagnetic centering device is kept constant in the stroke range as much as possible. The mover system 10 has a small mass to reduce an additional load of the vibration table. The cylindrical magnetic circuit has a compact design structure and a high winding utilization rate, so that the mass of the whole electromagnetic centering device is reduced, the requirement of axial output force is met, and the extra load of the centrifugal machine is reduced.
As shown in fig. 2 and 3, it is further preferable that the springs include a front end spring 29 and a rear end spring 31, and both the front end spring 29 and the rear end spring 31 are disposed in the through hole inside the mover core 30; the inner middle end of the mover core 30 is formed as a protrusion, and both ends of the rear end spring 31 are connected to the end of the rod-shaped portion of the rear end flange 21 and a first end of the protrusion, respectively; both ends of the front end spring 29 are connected to the end of the rod-shaped portion of the front end flange 27 and the second end of the projection, respectively.
In this embodiment, a protrusion formed at the inner middle end of the mover core 30 is formed in a ring shape;
in this embodiment, the front end spring 29 and the rear end spring 31 can be used together for axially limiting the stroke and restoring the initial position of the rotor core.
In this embodiment, both ends of the rear end spring 31 are fixedly connected to the end of the rod-shaped portion of the rear end flange 21 and the first end of the protrusion, respectively; both ends of the front end spring 29 are fixedly connected with the end part of the rod-shaped part of the front end flange 27 and the second end of the protrusion respectively;
when the embodiment works, the rotor core 30 and the halbach magnetic pole array structure move left and right, one spring is compressed, the other spring is stretched, and the two springs finally enable the rotor system 10 to restore to the initial position under the action of the force for restoring the original shape.
In operation, the moving limit of the mover core 30 is limited by the locking of the rear flange 21 and the front flange 27.
According to the method for centering the moving coil of the vibrating table in the centrifugal field, a test piece 1 is arranged on a table body structure of the vibrating table and is subjected to a vibration test along the axial direction of a machine arm of a centrifugal machine; the method comprises the step of arranging an electromagnetic centering device, wherein the output electromagnetic force of the electromagnetic centering device acts on the table body structure of the vibrating table and is used for balancing the centrifugal force borne by the table body structure of the vibrating table.
The balancing force required by the structure of the vibration table body in the centrifugal field is related to the mass of the movable part of the vibration table body and the overload borne by the vibration table body, and the balancing force is as follows:
mass of test piece 1 was MaThe distance between the mass center of the test piece 1 and the rotating shaft of the centrifugal machine is Ra(ii) a The total mass of the moving coil of the vibration table is MbThe distance between the mass center of the moving coil of the vibration table and the rotating shaft of the centrifugal machine is Rb(ii) a The guide rod 8 has a mass McThe distance between the center of mass of the guide rod 8 and the rotating shaft of the centrifugal machine is Rc(ii) a Mover system 10 has a mass MdThe distance between the center of mass of the rotor system 10 and the rotating shaft of the centrifuge is RdThe rotating speed of the centrifugal machine is omega (t); the centrifugal force to which the mass of all the moving parts is subjected can be expressed as:
Fcentrifugal force＝ω2(t)·(Ma·Ra+Mb·Rb+Mc·Rc+Md·Rd) (1)
The magnitude of the electromagnetic force output by the electromagnetic centering means depends on the magnitude of the input current to its winding coil 25, component I thereof1(t) for counteracting the centrifugal force of the movable part, component I2(t) for adjusting the equilibrium position of the moving coil of the oscillating table, respectively expressed as:
Felectromagnetic force＝C·(I1(t)+I2(t)) (4)
In the above formula, e (t) is the displacement deviation of the moving coil of the vibration table, Kp，KiAnd KdRespectively proportional, integral and differential gain coefficients, C being the input-output coefficient of the electromagnetic device, component I1(t) is for counteracting the centrifugal force of the movable part; component I2And (t) is used for adjusting the balance position of the moving coil of the vibration table.
As shown in fig. 4, the centering control process of the oscillating table moving coil in the centrifugal field includes:
obtaining a centering force control signal according to the stress analysis of the movable part in the centrifugal field in the formula (1) and the input-output relationship of the electromagnetic centering device in the formula (4);
taking the difference value of the control signal of the centering force and the position signal of the moving coil measured by the displacement sensor of the moving coil of the vibrating table as the input signal of the PID controller;
and (3) calculating the control quantity required for adjusting the balance position of the moving coil of the vibrating table in real time by the PID controller according to a formula (3), and obtaining the required current through an amplifier and a driver, wherein the current is the input current of the stator coil of the electromagnetic centering device for adjusting the balance position of the moving coil of the vibrating table.
The electromagnetism is installed in the electromagnetism and is designed for cylindric moving-magnet formula electromagnetic means in this application, cylindric magnetic circuit design compact structure, and the winding utilization ratio is higher to alleviate the quality of whole electromagnetism centering device, reduce centrifuge's extra load when satisfying the axial output power requirement, radial force between active cell and the stator offsets mutually, the influence of frictional force when can reduce the motion.
The front end shaft sleeve and the rear end shaft sleeve of the electromagnetic centering device are used for radial limiting and supporting of the rotor core, the front end spring and the rear end spring are used for axial limiting stroke and restoring initial position of the rotor core, so that the rotor of the electromagnetic centering device can freely move within a designed stroke range, the output force of the electromagnetic centering device is kept constant as far as possible within the stroke range, vibration output of a vibration table is not hindered, and the electromagnetic centering device has the characteristic of small dynamic stiffness.
In the application, the centering control technology based on the electromagnetic force can realize the centering of the moving coil of the vibrating table by controlling the input current of the stator coil of the electromagnetic centering device, the output force is controllable, and the response speed is high. In a particular embodiment, we design the electromagnetic centering device:
1. the mass of the rotor is as small as possible so as to reduce the extra load of the vibrating table;
2. the output force density is as high as possible, the smaller the mass of the whole electromagnetic device is, the better the mass is when the output force requirement is met, and the extra load of the centrifugal machine is reduced;
3. the output force is kept constant as much as possible in the stroke range, so that the output force is only dependent on the input current, and the vibration table can be centered under different acceleration conditions only by adjusting the input current.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. Shaking table moving coil centering device in centrifugal field includes:
a table body structure of the vibration table; the test piece (1) is arranged on a table body structure of the vibration table and is subjected to vibration test along the axial direction of a machine arm of the centrifugal machine;
it is characterized in that the vibrating table moving coil centering device further comprises:
an electromagnetic centering device;
a guide rod (8); the electromagnetic centering device comprises a rotor system (10) and a stator system (11); the stator system (11) is fixedly installed on a centrifuge arm, the first end of the guide rod (8) is connected with the table body structure of the vibrating table, the rotor system (10) is connected with the second end of the guide rod (8), and electromagnetic force generated between the stator system (11) and the rotor system (10) and centrifugal force borne by the test piece (1) are on the same straight line and opposite in direction.
2. The oscillating table moving coil centering device in centrifugal field of claim 1, wherein the oscillating table body structure comprises:
a work table top (2); the test piece (1) is arranged on the first end of the working table top (2), and the first end of the guide rod (8) is connected with the second end of the working table top (2);
a first drive coil (4);
a second drive coil (14); the second end of the working table top (2) is respectively connected with a first driving coil (4) and a second driving coil (14);
a first excitation coil (6); the first excitation coil (6) is arranged below the first driving coil (4); the first excitation coil (6) generates a first magnetic flux loop (5), and the first driving coil (4) is arranged in the first magnetic flux loop (5);
a second excitation coil (12); the second excitation coil (12) is arranged below the second driving coil (14), the second excitation coil (12) generates a second magnetic flux loop (13), and the second driving coil (14) is placed in the second magnetic flux loop (13).
3. The oscillating table moving coil centering device in centrifugal field of claim 2, wherein the oscillating table body structure further comprises:
a base (7); the base (7) is fixed on the arm of the centrifuge, a through hole is arranged on the base (7), and the second end of the guide rod (8) penetrates through the through hole on the base (7).
4. The centrifugal field vibrating table moving coil centering device according to any one of claims 2 or 3, wherein the vibrating table body structure further comprises:
an upper guide rail (3) and a lower guide rail (15); the second end of the working table top (2) is connected with a first driving coil (4) through a first connecting rod; the second end of the working table top (2) is connected with a second driving coil (14) through a second connecting rod; an upper guide rail (3) is arranged on one side of the first connecting rod; one side of the second connecting rod is provided with a lower guide rail (15), and the upper guide rail (3) and the lower guide rail (15) are used for supporting the working table top (2).
5. The oscillating table moving coil centering device in centrifugal field according to claim 1, wherein:
the stator system (11) comprises:
a stator core (24) formed in a hollow cylindrical structure;
a winding coil (25); winding coils (25) are uniformly wound among gaps of the stator core (24) and are distributed along the axial direction;
the mover system (10) includes:
a plurality of annular axial magnets (22);
a plurality of annular radial magnets (23); a plurality of axial magnets (22) and a plurality of radial magnets (23) are arranged in a crossed mode to form a Halbach magnetic pole array structure;
a mover core (30); the Halbach magnetic pole array structure is arranged between the stator core (24) and the rotor core (30) and is fixedly connected with the outer wall of the rotor core (30); the rotor iron core (30) is connected with the second end of the guide rod (8); the magnetic field generated by electrifying the winding coil (25) acts on the Halbach magnetic pole array structure, the generated electromagnetic force acts on the Halbach magnetic pole array structure and the rotor iron core (30), and the electromagnetic force and the centrifugal force applied to the test piece (1) are on the same straight line and opposite in direction.
6. The oscillating table moving coil centering device in centrifugal field according to claim 5, wherein:
the stator system (11) further comprises a front end flange (27), a rear end flange (21) and a shell (26);
the rotor system (10) also comprises a spring;
the rear end flange (21) is fixedly arranged on a centrifuge arm, the shell (26) is formed into a hollow cylinder structure, the first end of the shell (26) is connected with the rear end flange (21), the second end of the shell (26) is connected with the front end flange (27), and the shell (26) is wrapped outside the stator core (24);
a through hole is formed in the rotor core (30);
a rear end shaft sleeve (32) is arranged inside the first end of the rotor core (30); the rear end shaft sleeve (32) is sleeved on the side wall of the rod-shaped part which protrudes inwards of the rear end flange (21) in a sliding manner;
a front end shaft sleeve (28) is arranged inside the second end of the rotor iron core (30); the front end shaft sleeve (28) is sleeved on the side wall of the rod-shaped part which is protruded inwards from the front end flange (27) in a sliding way;
the spring is arranged in the rotor iron core (30), and two ends of the spring are respectively connected with the rod-shaped part protruding inwards of the rear end flange (21) and the rod-shaped part protruding inwards of the front end flange (27);
an opening is formed in the rear end flange (21), and the second end of the guide rod (8) penetrates through the opening to be connected with the rotor iron core (30).
7. The oscillating table moving coil centering device in centrifugal field according to claim 6, wherein the spring comprises a front end spring (29) and a rear end spring (31), the front end spring (29) and the rear end spring (31) are both arranged in the through hole inside the rotor core (30); the middle end in the rotor iron core (30) is formed into a bulge, and two ends of the rear end spring (31) are respectively connected with the end part of the rod-shaped part of the rear end flange (21) and the first end of the bulge; both ends of the front end spring (29) are connected to the end of the rod-shaped portion of the front end flange (27) and the second end of the protrusion, respectively.
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| CN202020129124.0U CN211685681U (en) | 2020-01-20 | 2020-01-20 | Vibrating table moving coil centering device in centrifugal field |
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| CN202020129124.0U CN211685681U (en) | 2020-01-20 | 2020-01-20 | Vibrating table moving coil centering device in centrifugal field |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111152937A (en) * | 2020-01-20 | 2020-05-15 | 中国工程物理研究院总体工程研究所 | Centering device and centering method for vibrating table moving coil in centrifugal field |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111152937A (en) * | 2020-01-20 | 2020-05-15 | 中国工程物理研究院总体工程研究所 | Centering device and centering method for vibrating table moving coil in centrifugal field |
| CN111152937B (en) * | 2020-01-20 | 2024-04-19 | 中国工程物理研究院总体工程研究所 | Centering device and centering method for vibrating table moving coil in centrifugal field |
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