CN113465962A - Motor vibration and noise performance experiment table, control method and application - Google Patents
Motor vibration and noise performance experiment table, control method and application Download PDFInfo
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- CN113465962A CN113465962A CN202110636083.3A CN202110636083A CN113465962A CN 113465962 A CN113465962 A CN 113465962A CN 202110636083 A CN202110636083 A CN 202110636083A CN 113465962 A CN113465962 A CN 113465962A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
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Abstract
The invention belongs to the technical field of rotating motors, and discloses a motor vibration and noise performance experiment table, a control method and application, wherein the experiment table comprises a voltage regulator, a frequency converter, a display, a tension controller, a torque and rotating speed tester, a power supply, a magnetic powder clutch and the like; the voltage regulator is connected with the frequency converter through a line; the frequency converter is connected with the motor through a circuit; the motor is connected with a torque and rotation speed tester through a coupler, and the torque and rotation speed tester is connected to the display through a line; the torque and rotation speed tester is connected with the magnetic powder clutch through a coupler, and the magnetic powder clutch is connected to the tension controller through a line; the temperature sensor, the noise sensor, the vibration sensor and the display are respectively connected to a testing computer. The invention integrates the measurement of the torque, the rotating speed, the power, the temperature, the noise and the vibration of the motor in different running states and carrying different loads, thereby judging the stability of the motor in the running process, and having the advantages of compact structure, strong universality and the like.
Description
Technical Field
The invention belongs to the technical field of rotating motors, and particularly relates to a motor vibration and noise performance experiment table, a control method and application.
Background
At present: with the development of economy, environmental problems are increasingly highlighted, coal and oil are increasingly used as power energy sources, and cleaner power facilities are more concerned. The permanent magnet synchronous motor is more and more favored by virtue of the advantages of high efficiency, small loss, small volume, light weight and the like. With the continuous research of people, the permanent magnet synchronous motor is continuously applied to the aviation and navigation industries and even reaches the automobile industry, and the application is more and more extensive. The motor has higher requirements for stable operation and reduction of vibration and noise.
The motor which runs normally and breaks down can make the equipment vibrate, the strength of the vibration signal and the contained frequency components have close relation to the type, degree, position and reason of the fault of the motor, and the monitoring and diagnosis of the running state of the motor can be realized by analyzing the type of the signal, so that the structure of the motor is further optimized. The existing motor performance test bed mainly measures torque, rotating speed and power, and data such as vibration, noise and the like can be obtained only through a single measurement mode.
Through the above analysis, the problems and defects of the prior art are as follows:
the existing motor performance experiment table only can measure the obtained data once and cannot obtain the data at the same time. This results in that all parameter variables cannot be analyzed in a performance test, and the measured variables are not time-sensitive to each other when the data measured at a single time are not in the same operating state of the motor. Therefore, the existing motor performance experiment table cannot provide complete data support for design optimization and improvement of the motor.
The difficulty in solving the above problems and defects is:
the noise signal and the vibration signal both belong to high sampling rate signals, and the test of motor vibration and noise needs to be added for the traditional test bed project.
The significance of solving the problems and the defects is as follows: through simultaneous measurement, the corresponding relation between all variables is obtained, the interaction between all parameters is analyzed, and the designed motor can realize stable operation and reduce higher requirements of vibration and noise
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a motor vibration and noise performance experiment table, a control method and application.
To achieve the purpose, the invention provides a motor vibration and noise performance experiment table, which comprises:
and the workbench provides a mounting position and a reference plane for the following equipment.
The frequency converter is connected with the motor through a circuit, directly controls the start/stop of the motor, and can realize the control of the rotating speed and the torque of the motor in a mode of changing the working power supply frequency of the motor;
the load motor comprises a magnetic powder clutch, a motor, a fan impeller or a water pump unit and the like, wherein the magnetic powder clutch transmits torque by using magnetic powder according to an electromagnetic principle, and gradually loads the load torque to an expected test by changing excitation current; the motor can gradually load the load torque to a desired test through the current control of the load motor frequency converter; the fan impeller or the water pump unit can be directly connected with the rotating shaft, and the transmitted torque is directly consumed through the rotation of the impeller;
the torque and rotating speed detection module is a torque and rotating speed tester connected with the motor through a coupler and is used for measuring the torque and rotating speed of the motor;
the temperature detection module comprises a temperature sensor, a signal output circuit and an acquisition instrument which are carried by the motor, and the temperature detection module can be used for knowing the running condition of the motor and carrying out necessary protection by measuring the temperature of a motor winding, a bearing, a cooling medium and other parts;
the noise detection module comprises a noise sensor, a signal output circuit and an acquisition instrument and is used for measuring and acquiring the noise sound pressure and frequency of the motor;
the vibration detection module comprises a vibration sensor, a signal output circuit and a collecting instrument and is used for detecting the vibration state of the motor.
Further, the frequency converter is connected with a voltage regulator through a line, and the voltage regulator is externally connected with a 380V power supply.
Further, the torque and rotation speed tester is connected with the magnetic powder clutch through the coupler, the magnetic powder clutch is connected into the tension controller through a circuit, and the tension controller is connected with the power supply through a connecting circuit.
Further, the torque and rotation speed tester is connected with the display through a circuit, the display is connected with the power supply through a connecting circuit, and the temperature sensor, the noise sensor, the vibration sensor and the display are respectively connected with the testing computer.
Further, the noise sensor is placed on a tripod, and the distance between the tripod and the motor is 1 meter.
Furthermore, the temperature sensor is arranged at the positions of a bearing, a winding and the like in the motor, and output signals are integrated to a junction box above the motor.
Furthermore, the vibration sensors are positioned on two sides of the motor, a base of the magnetic powder clutch, a base of the motor and a fan impeller.
The invention also aims to provide a permanent magnet synchronous motor testing method which uses the motor vibration and noise performance test table.
By combining all the technical schemes, the invention has the advantages and positive effects that: the invention is an experimental device for measuring the torque, the rotating speed, the power, the temperature, the vibration and the noise of a motor in the running process, and can simultaneously output signals of the torque, the rotating speed, the power, the temperature, the vibration and the noise under one running condition; various signals under different operating conditions may be measured. Therefore, the experimental device provides experimental support for motor transformation by measuring torque, rotating speed, power, temperature, vibration and noise of the motor under various operating conditions.
The invention integrates the measurement of the torque, the rotating speed, the power, the temperature, the noise and the vibration of the motor in different running states and carrying different loads, thereby judging the stability of the motor in the running process, and having the advantages of compact structure, strong universality and the like.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained from the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a motor vibration and noise performance test bench provided by an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a connection mode of a motor, a torque and rotation speed tester and a magnetic powder clutch according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of sensor distribution on a motor according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of sensor distribution on a magnetic particle clutch according to an embodiment of the present invention.
Fig. 5 is a time-frequency diagram of the noise of the fan impeller according to the embodiment of the present invention.
In the figure: 1. a voltage regulator; 2. a frequency converter; 3. a display; 4. a tension controller; 5. a torque and rotation speed tester; 6. a power source; 7. a magnetic powder clutch; 8. testing the computer; 9. a water pump unit; 10. a tripod; 11. a noise sensor; 12. a motor; 13. a coupling; 1201. a temperature sensor; 1202 vibrating the sensor.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention.
Aiming at the problems in the prior art, the invention provides a motor vibration and noise performance experiment table, a control method and application thereof, and the invention is described in detail below with reference to the accompanying drawings.
The motor vibration and noise performance experiment table provided by the embodiment comprises a voltage regulator 1, a frequency converter 2, a display 3, a tension controller 4, a torque and rotation speed tester 5, a power supply 6, a magnetic powder clutch 7, a testing computer 8, a water pump unit 9, a tripod 10, a noise sensor 11, a motor 12 and a coupler 13, as shown in fig. 1 to 4.
In this embodiment, the voltage regulator 1 is connected with the frequency converter 2 through a line; the frequency converter 2 is connected with the motor 12 through a line; the motor 12 is connected with the torque and rotation speed tester 5 through the coupler 13, and the torque and rotation speed tester 5 is connected to the display 3 through a line; the torque and rotation speed tester 5 is connected with the magnetic powder clutch 7 through a coupler 13, and the magnetic powder clutch 7 is connected to the tension controller 4 through a line; the temperature sensor 1201, the noise sensor 11, the vibration sensor 1202 and the display 3 are respectively connected to the testing computer 8.
In the embodiment, in order to regulate the operation of the motor 12 in a non-rated state, a voltage regulator 1 is arranged; the external 380V power supply of the voltage regulator 1 is connected with the frequency converter 2. The frequency converter 2 realizes starting of the motor 12 by adjusting the rotating speed, and can measure the running condition of the motor 12 in a non-rated rotating speed state.
In this embodiment, in order to test the operation conditions of the motor under different loads, the magnetic powder clutch 7 and the tension controller 4 are selected, and the magnetic powder clutch 7 can be regulated and controlled by the tension controller 4, so that the magnetic powder clutch 7 can work in three different working states of constant current, constant voltage or constant power.
In addition, the magnetic powder clutch 7 can also be replaced by a fan impeller, a water pump unit and other loads, the fan impeller and the water pump unit are constant loads, the tension controller 4 is not required to control, and the running condition of the fan impeller or the water pump unit can also be measured by using the motor vibration and noise performance test table provided by the invention; in addition, the magnetic powder clutch 7 can be replaced by an electric motor, and load torque can be gradually loaded to an expected test through the current control of a load motor frequency converter; similarly, the magnetic powder clutch 7 can be replaced by a generator, and the recovery of the electric energy consumed by the motor is realized by connecting an asynchronous generator to generate electricity and connecting an energy conversion device.
In this embodiment, in order to obtain the change of the torque, the rotation speed and the power of the motor in the operation process, the torque and rotation speed tester 5 is connected to the display 3, and the numerical values of the torque, the rotation speed and the power are obtained on the display 3 roughly.
In this embodiment, since the working voltage required by the display 3 and the tension controller 4 is small, the power supply 6 needs to be separately connected to supply the display 2 and the tension controller 3 for operation, and the power supply 6 is a DC24V power supply in this experimental apparatus.
Preferably, the motor 12, the torque and rotation speed tester 5 and the load are fixed on the workbench through bolts, so that the safety of the experiment can be ensured.
In the present embodiment, in order to measure the noise generated during the operation of the motor, the tripod 10 is placed at a position one meter away from the motor 12, and the noise sensor 11 is placed and fixed on the tripod 10.
In this embodiment, as shown in fig. 3 and 4, in order to more accurately obtain vibration data of the motor during operation, vibration sensors 1202 are respectively disposed on the motor and the load, so that 3 vibration sensors 1202 are disposed, and are respectively located on two sides of the motor 12 and on the base of the magnetic particle clutch 7; if the magnetic particle clutch 7 is replaced by the water pump set 9, the vibration sensor 1202 should be placed on the base of the water pump set 9; if the magnetic particle clutch 7 is replaced with a fan wheel, a vibration sensor 1202 should be mounted on the fan wheel. This arrangement avoids vibration errors due to load movement.
In this embodiment, in order to obtain the temperature variation of the motor during operation, a temperature sensor 1201 of an internal winding and a bearing is disposed in the junction box at the top of the motor 12, so that the temperature variation of the motor 12 during operation can be accurately obtained.
In this embodiment, in order to accurately collect the measured signals, the display 3, the vibration sensor 1202, the temperature sensor 1201 and the noise sensor 11 are connected to the testing computer 8, so that different signal fluctuations of the rotation speed, the torque, the power, the temperature, the vibration and the sound of the motor in the same operation state can be displayed on the testing computer, and accurate data is provided for later experimental analysis.
In this embodiment, a time-frequency diagram of the noise signal of the motor measured by the noise sensor is shown in fig. 5. By further extracting the characteristics of the signal by Matlab, the running characteristics of the motor in the state can be observed, so that data support is provided for the structural improvement and performance optimization of the motor.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The foregoing is merely an example for clearly illustrating the present invention and is not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be covered within the protection scope of the present invention.
Claims (8)
1. The utility model provides a motor vibration, noise performance laboratory bench, includes the workstation, its characterized in that, the workstation upper end is provided with:
the frequency converter is connected with the motor through a circuit and used for adjusting the rotating speed to start the motor to run;
the motor load comprises a magnetic powder clutch, a water pump unit or a fan impeller;
the torque and rotating speed detection module comprises a torque and rotating speed tester connected with the motor through a coupler and is used for measuring the torque and rotating speed of the motor through the torque and rotating speed tester;
the noise detection module is used for measuring the noise of the motor through the noise sensor;
the temperature detection module is used for detecting the temperatures of a plurality of positions of the motor through a plurality of temperature sensors;
and the vibration detection module is used for detecting the vibration state of the motor through the vibration sensor.
2. The motor vibration and noise performance test bench of claim 1, wherein the frequency converter is connected with a voltage regulator through a line, and the voltage regulator is externally connected with a 380V power supply.
3. The motor vibration and noise performance test table according to claim 1, wherein the torque and rotation speed tester is connected with a magnetic particle clutch through a coupler, the magnetic particle clutch is connected into a tension controller through a circuit, and the tension controller is connected with a power supply through a connecting circuit.
4. The motor vibration and noise performance test bench of claim 1, wherein the torque and rotation speed tester is connected to the display through a circuit, the display is connected to the power supply through a connecting circuit, and the temperature sensor, the noise sensor, the vibration sensor and the display are respectively connected to the test computer.
5. The motor vibration and noise performance test bench of claim 4, wherein said noise sensor is placed on a tripod, and the distance between said tripod and the motor is 1 m.
6. The motor vibration and noise performance test bench of claim 1 wherein said temperature sensor is located near the motor shaft and at the top of the motor.
7. The motor vibration and noise performance test table of claim 1, wherein the vibration sensors are located on two sides of the motor, a base of the magnetic powder clutch, two sides of the water pump unit, and the fan impeller.
8. A permanent magnet synchronous motor testing method is characterized in that the motor vibration and noise performance test bench of any one of claims 1-7 is used in the permanent magnet synchronous motor testing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110636083.3A CN113465962A (en) | 2021-06-08 | 2021-06-08 | Motor vibration and noise performance experiment table, control method and application |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110636083.3A CN113465962A (en) | 2021-06-08 | 2021-06-08 | Motor vibration and noise performance experiment table, control method and application |
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| CN113465962A true CN113465962A (en) | 2021-10-01 |
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| CN202110636083.3A Pending CN113465962A (en) | 2021-06-08 | 2021-06-08 | Motor vibration and noise performance experiment table, control method and application |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114646769A (en) * | 2022-03-18 | 2022-06-21 | 广东凯金新能源科技股份有限公司 | Automatic detection system for graphite tap detection and use method thereof |
| CN117192365A (en) * | 2023-09-13 | 2023-12-08 | 江苏理工学院 | Comprehensive performance test platform and test method for servo motor |
-
2021
- 2021-06-08 CN CN202110636083.3A patent/CN113465962A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114646769A (en) * | 2022-03-18 | 2022-06-21 | 广东凯金新能源科技股份有限公司 | Automatic detection system for graphite tap detection and use method thereof |
| CN117192365A (en) * | 2023-09-13 | 2023-12-08 | 江苏理工学院 | Comprehensive performance test platform and test method for servo motor |
| CN117192365B (en) * | 2023-09-13 | 2024-05-14 | 江苏理工学院 | Comprehensive performance test platform and test method for servo motor |
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