CN115144749A - Motor test system based on big data - Google Patents
Motor test system based on big data Download PDFInfo
- Publication number
- CN115144749A CN115144749A CN202210982247.2A CN202210982247A CN115144749A CN 115144749 A CN115144749 A CN 115144749A CN 202210982247 A CN202210982247 A CN 202210982247A CN 115144749 A CN115144749 A CN 115144749A
- Authority
- CN
- China
- Prior art keywords
- torque
- motor
- signal
- tested
- rotating speed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
- G01R31/343—Testing dynamo-electric machines in operation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
Abstract
The invention provides a motor test system based on big data, which comprises a direct current stabilized voltage power supply, a tested motor, a control module, a test module, a host and a terminal service module. The speed, torque, voltage, current and temperature of the motor to be tested are monitored on the terminal server, and the test data is received by the data acquisition device according to the central processing unit and processed to obtain the detection value and the judgment value, so that the test data can be fed back on a test site in time and is transmitted to the terminal service module for further improvement of the motor to be tested according to the test data by research and development departments. The invention effectively improves the accuracy and reliability of the motor test in the field.
Description
Technical Field
The invention relates to the field of motor testing, in particular to a motor testing system based on big data.
Background
After the motor is assembled, an online test is required. The detection of the motor is usually under the no-load condition, meanwhile, along with the rapid development of the motor industry, motor test projects are more and more, the functions of the dynamometer are also enriched, and the motor industry needs to carry out complete test and performance analysis, motor performance analysis, driver analysis and analysis on control characteristic transient waveforms and control response at present.
The experimental team browses and researches a large amount of related recorded data for a long time aiming at a motor test system and a related technology of big data analysis, meanwhile, a large amount of related experiments are carried out by depending on related resources, and a large amount of searching finds that the existing prior art such as US08061893B2, KR101177830B1, JP2002372573A and CN108717163A exist, such as a motor test device CN110954258B in the prior art, the experimental team comprises a fixed shaft sleeve, fixed fan blades and adjusting fan blades, a motor shaft inserting hole is formed in the center of the fixed shaft sleeve, at least two fixed fan blades and at least two adjusting fan blades are arranged on the fixed shaft sleeve and are uniformly distributed along the circumferential direction of a motor shaft inserting hole shaft, each adjusting fan blade is arranged on the fixed shaft sleeve or the fixed fan blades and is respectively arranged in a superposition mode corresponding to each fixed fan blade, and each adjusting fan blade can move relative to the fixed fan blade.
The invention aims to effectively solve the problems that the rotational inertia cannot be calculated according to the measured motor torque to judge whether the motor is in a proper torque error or not, and the measured motor cannot be adjusted in real time according to the measured torque in the prior art.
Disclosure of Invention
The invention aims to provide a motor test system based on big data aiming at the defects in the prior art.
In order to overcome the defects of the prior art, the invention adopts the following technical scheme:
a motor test system based on big data comprises a direct current stabilized voltage power supply, a tested motor connected with the direct current stabilized voltage power supply to be electrified, and a control module arranged between the stabilized voltage power supply and the tested motor; the test module is connected with the output shaft of the tested motor through a cable; the host computer is connected with the control module and the test module, and the terminal service module is connected with the host computer through a wide area network;
the control module comprises a starting switch for controlling the starting of the direct-current stabilized power supply and an inverter for providing alternating current with different frequencies to the input end of the tested motor so as to control the input torque;
the host comprises an input device for inputting a preset control program, a data acquisition device connected with the test module for acquiring signals, and a central processing unit connected with the input device and the data acquisition module; the terminal service module is connected with the control module and the control module, and comprises an output device for transmitting a control instruction to the control module, a data interaction device connected with the central processing unit and transmitting data to the terminal service module, and a display device for displaying data in the central processing unit and a processing process;
the central processing unit generates a first instruction for controlling the starting and the torque of the tested motor according to a preset control program of the input device, and sends the first instruction to the control module to control the torque; and sending the obtained detection value to the data interaction device and the display device.
The test module comprises a speed detector for monitoring the tested motor to obtain a monitored rotating speed signal, a torque detector for monitoring the shaft torque of the tested motor to obtain a monitored torque signal, a dynamometer which is connected with the speed detector and the torque detector and is used for measuring torque deviation, an oscilloscope for measuring the voltage and the current of the tested motor, and a temperature sensor for monitoring the real-time temperature of the tested motor;
the speed detector comprises an incremental encoder, the incremental encoder generates a rotation displacement amount when the output shaft of the tested motor rotates and a frequency pulse signal corresponding to the rotation displacement amount, and the pulse signal is used for analyzing to obtain a monitoring rotating speed signal of the tested motor;
the torque detector includes a deformation sensor that detects a shaft torque from a deformation amount in a torsion direction of the output shaft of the motor to be detected, and generates a monitoring torque signal.
The dynamometer comprises a first signal processing device for processing a monitoring rotating speed signal to obtain a filtering rotating speed signal and a rotating speed adjusting value and a second signal processing device for processing a monitoring torque signal to obtain a filtering torque signal and a torque adjusting value.
The first signal processing device comprises a first low-pass filter circuit, an assignment multiplication circuit and a first deviation calculation circuit;
the first low-pass filter circuit screens out high-frequency components from the monitoring rotating speed signal to obtain a filtering rotating speed signal;
the assignment circuit compares the filtering rotating speed signal with a first threshold value and a second threshold value and assigns: when the filtering rotating speed signal is smaller than a first threshold value, the filtering rotating speed signal is assigned to be 0; when the filtering rotating speed signal is greater than a second threshold value, the filtering rotating speed signal is assigned to be 1; when the filtering rotating speed signal is larger than a first threshold value and smaller than a second threshold value, the filtering rotating speed signal is assigned to be between 0 and 1, and the assignment is in direct proportion to the filtering rotating speed signal;
the assignment multiplication circuit generates a filtering rotary inertia by multiplying the assignment of the filtering rotating speed signal by an inertia coefficient;
and the first deviation calculation circuit subtracts the theoretical moment of inertia from the filtering moment of inertia of the measured motor to obtain an inertia deviation.
The second signal processing apparatus includes: the second low-pass filter circuit, the second deviation calculating circuit and the integral calculating circuit;
the second low-pass filter circuit screens out high-frequency components from the monitoring torque signal to obtain a filter torque signal;
the second deviation calculation circuit subtracts the input torque from the filtered torque signal of the tested motor to obtain a torque deviation;
the integral calculation circuit obtains a torque adjustment value by performing integral operation on the torque deviation.
The control process of the central processing unit is as follows:
step S1, the central processing unit gradually generates a first instruction for controlling the starting and the torque of the tested motor according to the steps according to a pre-control program of the input device;
s2, the central processing unit sends a first instruction to the control module through an output device, the starting switch starts the motor to be tested according to the first instruction, and the inverter adjusts the torque of the motor to be tested;
s3, the central processing unit receives monitoring rotating speed signals and monitoring torque signals on the speed detector and the torque detector through the data acquisition device, and receives inertia deviation and torque deviation on the dynamometer;
and S4, comparing the torque deviation obtained by the central processing unit according to the second deviation calculation circuit with a standard torque deviation:
if the difference value is larger than or equal to a third threshold value, judging that the torque of the tested motor is not in a normal range, and executing a step S5; if the difference value is smaller than a third threshold value, the torque of the tested motor is judged to be in a normal range, and the step is executed
S6；
S5, the central processing unit receives a torque adjustment value in the integral calculation circuit, generates a torque adjustment instruction and sends the torque adjustment instruction to the control module through the output device to perform deviation adjustment on the torque of the tested motor; returning to execute the step S3;
step S6: and the central processing unit sends the obtained detection value to the data interaction device and the display device.
The beneficial effects obtained by the invention are as follows:
1. the system enables a user to monitor the speed, the torque, the voltage, the current and the temperature of the motor of the tested motor on the terminal server, greatly saves human resources and improves the experimental efficiency.
2. And calculating the rotational inertia according to the measured motor torque to judge whether the motor is in a proper torque error, and adjusting the input torque in real time according to the measured torque, so that the accuracy of the output torque of the measured motor is improved.
3. When the value of the monitored rotation speed signal in the low rotation speed region is rapidly increased by the first signal processing device, the oscillation of the monitored torque signal can be suppressed.
4. The testing data is received by the central processing unit through the data acquisition device and processed to obtain a detection value and a judgment value, and the detection value and the judgment value are sent to the data interaction device and the display device, so that the testing data can be fed back on a testing site in time and transmitted to the terminal service module to be further improved by a research and development department according to the testing data.
5. The input torque of the tested motor is controlled through the control module, and the power and the temperature of the tested motor in the actual application process are comprehensively tested through the test module, so that the accuracy and the reliability of the test are improved.
Drawings
The invention will be further understood from the following description in conjunction with the accompanying drawings. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the embodiments. Like reference numerals designate corresponding parts throughout the different views.
FIG. 1 is a modular schematic of a big data based motor test system of the present invention.
FIG. 2 is a schematic block diagram of a host according to the present invention.
FIG. 3 is a flow chart of the CPU of the present invention.
Fig. 4 is a flowchart of a cpu according to a second embodiment of the present invention.
Fig. 5 is an experimental schematic diagram of a big data based motor testing system according to the present invention.
Detailed Description
In order to make the objects and advantages of the present invention more apparent, the present invention will be 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 intended to limit the invention. Other systems, methods, and/or features of the present embodiments will become apparent to those skilled in the art upon review of the following detailed description. It is intended that all such additional systems, methods, features and advantages be included within this description, be within the scope of the invention, and be protected by the accompanying claims. Additional features of the disclosed embodiments are described in, and will be apparent from, the detailed description below.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but not to indicate or imply that the device or component referred to must have a specific orientation.
The first embodiment is as follows:
the embodiment constructs a motor test system based on big data, which improves the test efficiency;
a motor test system based on big data comprises a direct current stabilized power supply, a motor to be tested and a control module, wherein the motor to be tested is connected with the direct current stabilized power supply to be electrified; the test module is connected with the output shaft of the tested motor through a cable; the host computer is connected with the control module and the test module, and the terminal service module is connected with the host computer through a wide area network;
the control module comprises a starting switch for controlling the starting of the direct-current stabilized power supply and an inverter for providing alternating current with different frequencies to the input end of the tested motor so as to control the input torque;
the host comprises an input device for inputting a preset control program, a data acquisition device connected with the test module for acquiring signals, and a central processing unit connected with the input device and the data acquisition module; the terminal service module is connected with the control module, the output device transmits a control instruction to the control module, the data interaction device is connected with the central processing unit and transmits data to the terminal service module, and the display device displays data and a processing process in the central processing unit;
the central processing unit generates a first instruction for controlling the starting and the torque of the tested motor according to a preset control program of the input device, and sends the first instruction to the control module to control the torque; and sending the obtained detection value to the data interaction device and the display device.
The test module comprises a speed detector for monitoring the tested motor to obtain a monitored rotating speed signal, a torque detector for monitoring the shaft torque of the tested motor to obtain a monitored torque signal, a dynamometer which is connected with the speed detector and the torque detector and is used for measuring torque deviation, an oscilloscope for measuring the voltage and the current of the tested motor, and a temperature sensor for monitoring the real-time temperature of the tested motor;
the speed detector comprises an incremental encoder, the incremental encoder generates a rotation displacement amount when the output shaft of the tested motor rotates and a frequency pulse signal corresponding to the rotation displacement amount, and the pulse signal is used for analyzing to obtain a monitoring rotating speed signal of the tested motor;
the torque detector includes a deformation sensor that detects a shaft torque from a deformation amount in a torsion direction of the output shaft of the motor to be detected, and generates a monitoring torque signal.
The dynamometer comprises a first signal processing device for processing a monitoring rotating speed signal to obtain a filtering rotating speed signal and a rotating speed adjusting value and a second signal processing device for processing a monitoring torque signal to obtain a filtering torque signal and a torque adjusting value.
The first signal processing device comprises a first low-pass filter circuit, an assignment multiplication circuit and a first deviation calculation circuit;
the first low-pass filter circuit screens out high-frequency components from the monitoring rotating speed signal to obtain a filtering rotating speed signal;
the assignment circuit compares the filtering rotating speed signal with a first threshold value and a second threshold value and assigns: when the filtering rotating speed signal is smaller than a first threshold value, the filtering rotating speed signal is assigned to be 0; when the filtering rotating speed signal is greater than a second threshold value, the filtering rotating speed signal is assigned to be 1; when the filtering rotating speed signal is larger than a first threshold value and smaller than a second threshold value, the filtering rotating speed signal is assigned to be between 0 and 1, and the assignment is in direct proportion to the filtering rotating speed signal;
the assignment multiplication circuit generates a filtering rotary inertia by multiplying the assignment of the filtering rotating speed signal by an inertia coefficient;
and the first deviation calculation circuit subtracts the theoretical moment of inertia from the filtering moment of inertia of the measured motor to obtain an inertia deviation.
The second signal processing apparatus includes: the second low-pass filter circuit, the second deviation calculating circuit and the integral calculating circuit;
the second low-pass filter circuit screens out high-frequency components from the monitoring torque signal to obtain a filter torque signal;
the second deviation calculation circuit subtracts the input torque from the filtered torque signal of the tested motor to obtain a torque deviation;
the integral calculation circuit obtains a torque adjustment value by performing integral operation on the torque deviation.
The control process of the central processing unit is as follows:
step S1, the central processing unit gradually generates a first instruction for controlling the starting and the torque of the tested motor according to the steps according to a pre-control program of the input device;
s2, the central processing unit sends a first instruction to the control module through an output device, the starting switch starts the motor to be tested according to the first instruction, and the inverter adjusts the torque of the motor to be tested;
s3, the central processing unit receives monitoring rotating speed signals and monitoring torque signals on the speed detector and the torque detector through the data acquisition device, and receives inertia deviation and torque deviation on the dynamometer;
and S4, comparing the torque deviation obtained by the central processing unit according to the second deviation calculation circuit with a standard torque deviation:
if the difference is larger than or equal to the third threshold, judging that the torque of the tested motor is not in a normal range, and executing a step S5; if the difference value is smaller than a third threshold value, judging that the torque of the tested motor is in a normal range, and executing a step S6;
s5, the central processing unit receives a torque adjustment value in the integral calculation circuit, generates a torque adjustment instruction and sends the torque adjustment instruction to the control module through the output device to perform deviation adjustment on the torque of the tested motor; returning to execute the step S3;
step S6: and the central processing unit sends the obtained detection value to the data interaction device and the display device.
The second embodiment:
in addition to the contents of the above embodiments, with reference to fig. 1-5, the following are also included:
the test module comprises a speed detector for monitoring the tested motor to obtain a monitored rotating speed signal, a torque detector for monitoring shaft torque to obtain a monitored torque signal, a dynamometer which is connected with the speed detector and the torque detector and used for measuring torque deviation, an oscilloscope for measuring the voltage and the current of the tested motor, and a temperature sensor for monitoring the real-time temperature of the tested motor;
the speed detector comprises an incremental encoder, the incremental encoder generates a rotation displacement amount when the output shaft of the tested motor rotates and a frequency pulse signal corresponding to the rotation displacement amount, and the pulse signal is used for analyzing to obtain a monitoring rotating speed signal of the tested motor;
the torque detector includes a deformation sensor that detects a shaft torque from a deformation amount in a torsion direction of the output shaft of the motor to be detected, and generates a monitoring torque signal.
The control process of the central processing unit is as follows:
step S21, the central processing unit gradually generates a first instruction for controlling the starting and the torque of the tested motor according to the steps according to the preset control program of the input device;
s22, the central processing unit sends a first instruction to the control module through an output device, the starting switch starts the motor to be tested according to the first instruction, and the inverter adjusts the torque of the motor to be tested;
s23, the central processing unit receives monitoring rotating speed signals and torque detection signals on the speed detector and the torque detector through the data acquisition device, and receives inertia deviation, torque deviation and a torque adjustment value on the dynamometer, voltage and current of a measured motor on the oscilloscope, and real-time temperature of the measured motor of the temperature sensor;
and S24, comparing the torque deviation obtained by the central processor according to the second deviation calculation circuit with a standard torque deviation:
if the difference is larger than or equal to the third threshold, judging that the torque of the tested motor is not in a normal range, and executing a step S25; if the difference value is smaller than a third threshold value, judging that the torque of the tested motor is in a normal range, and executing a step S26;
step S25, the central processing unit receives the torque adjustment value in the integral calculation circuit, generates a torque adjustment instruction, sends the torque adjustment instruction to the control module through the output device to perform deviation adjustment on the torque, and returns to execute the step S24;
s26, the central processing unit generates the power of the tested motor according to the voltage and the current of the tested motor on the oscilloscope, compares the power with the marked power marked on the tested motor, and judges that the power of the motor does not reach the standard if the difference value exceeds a fourth threshold value;
step S27: the central processing unit compares the real-time temperature T of the tested motor 1 With the current ambient temperature T 2 Setting a comparison value D = T 1 -T 2 ：
If D is larger than or equal to the fifth threshold value, judging that the temperature of the motor in the working state is abnormal;
if D is smaller than a fifth threshold value, judging that the temperature of the motor in the working state is normal;
step S28: and the central processing unit sends the obtained detection value and the judgment value to the data interaction device and the display device.
Example three:
in addition to the contents of the above embodiments, with reference to fig. 1-5, the following are also included:
the speed detector comprises an incremental encoder, the incremental encoder generates a rotation displacement amount when the output shaft of the tested motor rotates and a frequency pulse signal corresponding to the rotation displacement amount, and the pulse signal is used for analyzing to obtain a monitoring rotating speed signal of the tested motor;
the first signal processing device comprises a first low-pass filter circuit, an assignment multiplication circuit and a first deviation calculation circuit;
the first low-pass filter circuit screens out high-frequency components from the monitoring rotating speed signal to obtain a filtering rotating speed signal;
the assignment circuit compares the filtering rotating speed signal with a first threshold value and a second threshold value and assigns: when the monitoring rotating speed signal is smaller than a first threshold value, the filtering rotating speed signal is assigned to be 0; when the filtering rotating speed signal is greater than a second threshold value, the filtering rotating speed signal is assigned to be 1; when the filtering rotating speed signal is larger than a first threshold value and smaller than a second threshold value, the filtering rotating speed signal is assigned to be a value which is between 0 and 1 and is proportional to the filtering rotating speed signal;
the assignment multiplication circuit generates a filtering rotary inertia by multiplying the assignment of the filtering rotating speed signal by an inertia coefficient;
and the first deviation calculation circuit subtracts the theoretical moment of inertia from the filtering moment of inertia of the measured motor to obtain an inertia deviation.
The first signal processing device obtains a monitoring rotating speed signal from the incremental encoder, obtains a filtering rotating speed signal according to the first low-pass filter circuit, assigns the filtering rotating speed signal in the assignment circuit, assigns the filtering rotating speed signal by the assignment multiplication circuit and multiplies the inertia coefficient to generate a filtering rotating inertia, and obtains an inertia deviation in the first deviation calculation circuit. The first signal processing device enables suppression of oscillation of the torque command signal and the shaft torque detection signal even when the value of the monitored rotational speed signal in the low rotational speed region sharply increases.
The assignment multiplication circuit generates a filtering rotary inertia by multiplying the assignment of the filtering rotating speed signal by an inertia coefficient;
the first deviation calculation circuit subtracts a theoretical moment of inertia from the filtering moment of inertia of the measured motor to obtain an inertia deviation;
theoretical moment of inertia here
Where m is the mass of the motor under test, r is the radius of rotation, and h is the height.
The second signal processing apparatus includes: the second low-pass filter circuit, the second deviation calculating circuit and the integral calculating circuit;
the second low-pass filter circuit screens out high-frequency components from the monitoring torque signal to obtain a filter torque signal;
the second deviation calculation circuit subtracts the input torque from the filtered torque signal of the tested motor to obtain a torque deviation; the integral calculation circuit obtains a torque adjustment value by performing integral operation on the torque deviation.
The invention monitors the speed, the torque, the voltage, the current and the temperature of the motor of the tested motor on the terminal server, thereby greatly saving human resources and improving the experimental efficiency. And the rotational inertia is calculated according to the measured motor torque to judge whether the motor is in a proper torque error, and the input torque is adjusted in real time according to the measured torque, so that the accuracy of the output torque of the measured motor is improved. In addition, when the value of the monitored rotational speed signal in the low rotational speed region is rapidly increased by the first signal processing device, the oscillation of the torque command signal and the shaft torque detection signal can be suppressed. The testing data is received by the central processing unit through the data acquisition device and processed to obtain a detection value and a judgment value, and the detection value and the judgment value are sent to the data interaction device and the display device, so that the testing data can be fed back on a testing site in time and transmitted to the terminal service module to be further improved by a research and development department according to the testing data. The input torque of the tested motor is controlled through the control module, the power and the temperature of the tested motor in the actual application process are comprehensively tested, and the accuracy and the reliability of the test are improved. The invention effectively improves the accuracy and reliability of the motor test in the field.
Although the invention has been described above with reference to various embodiments, it should be understood that many changes and modifications may be made without departing from the scope of the invention. That is, the methods, systems, and devices discussed above are examples. Various configurations may omit, substitute, or add various procedures or components as appropriate. For example, in alternative configurations, the methods may be performed in an order different than described, and/or various components may be added, omitted, and/or combined. Moreover, features described with respect to certain configurations may be combined in various other configurations, as different aspects and elements of the configurations may be combined in a similar manner. Further, elements therein may be updated as technology evolves, i.e., many elements are examples and do not limit the scope of the disclosure or claims.
Specific details are given in the description to provide a thorough understanding of example configurations, including implementations. However, configurations may be practiced without these specific details, for example, well-known circuits, processes, algorithms, structures, and techniques have been shown without unnecessary detail in order to avoid obscuring the configurations. This description provides example configurations only, and does not limit the scope, applicability, or configuration of the claims. Rather, the foregoing description of the configurations will provide those skilled in the art with an enabling description for implementing the described techniques. Various changes may be made in the function and arrangement of elements without departing from the spirit or scope of the disclosure.
In conclusion, it is intended that the foregoing detailed description be regarded as illustrative rather than limiting, and that it be understood that these examples are illustrative only and are not intended to limit the scope of the invention. After reading the description of the present invention, the skilled person can make various changes or modifications to the invention, and these equivalent changes and modifications also fall into the scope of the invention defined by the claims.
Claims (6)
1. The motor test system based on the big data is characterized by comprising a direct current stabilized voltage power supply, a tested motor and a control module, wherein the tested motor is connected with the direct current stabilized voltage power supply to be electrified; the test module is connected with the output shaft of the tested motor through a cable; the host computer is connected with the control module and the test module, and the terminal service module is connected with the host computer through a wide area network;
the control module comprises a starting switch for controlling the starting of the direct-current stabilized power supply and an inverter for providing alternating current with different frequencies to the input end of the tested motor so as to control the input torque;
the host comprises an input device for inputting a preset control program, a data acquisition device connected with the test module for acquiring signals, and a central processing unit connected with the input device and the data acquisition module; the terminal service module is connected with the control module, the output device transmits a control instruction to the control module, the data interaction device is connected with the central processing unit and transmits data to the terminal service module, and the display device displays data and a processing process in the central processing unit;
the central processing unit generates a first instruction for controlling the starting and the torque of the tested motor according to a preset control program of the input device, and sends the first instruction to the control module to control the torque; and sending the obtained detection value to the data interaction device and the display device.
2. The big data based motor test system as claimed in claim 1, wherein the test module comprises a speed detector for monitoring the motor to be tested to obtain a monitored rotating speed signal, a torque detector for monitoring the shaft torque of the motor to be tested to obtain a monitored torque signal, a dynamometer connected with the speed detector and the torque detector for measuring torque deviation, an oscilloscope for measuring the voltage and the current of the motor to be tested, and a temperature sensor for monitoring the real-time temperature of the motor to be tested;
the speed detector comprises an incremental encoder, the incremental encoder generates a rotation displacement amount when the output shaft of the motor to be detected rotates and a frequency pulse signal corresponding to the rotation displacement amount, and the pulse signal is used for analyzing to obtain a monitoring rotating speed signal of the motor to be detected;
the torque detector includes a deformation sensor that detects a shaft torque from a deformation amount in a torsion direction of the output shaft of the motor to be detected, and generates a monitoring torque signal.
3. The big data based motor test system of claim 2, wherein the dynamometer comprises a first signal processing device that processes the monitored speed signal to obtain a filtered speed signal and a speed adjustment value, and a second signal processing device that processes the monitored torque signal to obtain a filtered torque signal and a torque adjustment value.
4. The big-data-based motor test system according to claim 3, wherein the first signal processing means comprises a first low-pass filter circuit, an assignment multiplication circuit, a first deviation calculation circuit;
the first low-pass filter circuit screens out high-frequency components from the monitoring rotating speed signal to obtain a filtering rotating speed signal;
the assignment circuit compares the filtering rotating speed signal with a first threshold value and a second threshold value and assigns: when the filtering rotating speed signal is smaller than a first threshold value, the filtering rotating speed signal is assigned to be 0; when the filtering rotating speed signal is greater than a second threshold value, the filtering rotating speed signal is assigned to be 1; when the filtering rotating speed signal is larger than a first threshold value and smaller than a second threshold value, the filtering rotating speed signal is assigned to be between 0 and 1, and the assignment is in direct proportion to the filtering rotating speed signal;
the assignment multiplication circuit generates a filtering rotary inertia by multiplying the assignment of the filtering rotating speed signal by an inertia coefficient;
and the first deviation calculation circuit subtracts the theoretical moment of inertia from the filtering moment of inertia of the measured motor to obtain an inertia deviation.
5. The big-data based motor test system of claim 4, wherein the second signal processing means comprises: the second low-pass filter circuit, the second deviation calculating circuit and the integral calculating circuit;
the second low-pass filter circuit screens out high-frequency components from the monitoring torque signal to obtain a filter torque signal;
the second deviation calculation circuit subtracts the input torque from the filtered torque signal of the tested motor to obtain a torque deviation;
the integral calculation circuit obtains a torque adjustment value by performing integral operation on the torque deviation.
6. The big-data-based motor test system according to claim 5, wherein the control process of the central processor is as follows:
step S1, the central processing unit gradually generates a first instruction for controlling the starting and the torque of the tested motor according to the steps according to a pre-control program of the input device;
s2, the central processing unit sends a first instruction to the control module through an output device, the starting switch starts the motor to be tested according to the first instruction, and the inverter adjusts the torque of the motor to be tested;
s3, the central processing unit receives monitoring rotating speed signals and monitoring torque signals on the speed detector and the torque detector through the data acquisition device, and receives inertia deviation and torque deviation on the dynamometer;
and S4, comparing the torque deviation obtained by the central processing unit according to the second deviation calculation circuit with a standard torque deviation:
if the difference is larger than or equal to the third threshold, judging that the torque of the tested motor is not in a normal range, and executing a step S5; if the difference value is smaller than a third threshold value, judging that the torque of the tested motor is in a normal range, and executing a step S6;
s5, the central processing unit receives a torque adjustment value in the integral calculation circuit, generates a torque adjustment instruction and sends the torque adjustment instruction to the control module through the output device to perform deviation adjustment on the torque of the tested motor; returning to execute the step S3;
step S6: and the central processing unit sends the obtained detection value to the data interaction device and the display device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210982247.2A CN115144749A (en) | 2022-08-16 | 2022-08-16 | Motor test system based on big data |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210982247.2A CN115144749A (en) | 2022-08-16 | 2022-08-16 | Motor test system based on big data |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115144749A true CN115144749A (en) | 2022-10-04 |
Family
ID=83415278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210982247.2A Pending CN115144749A (en) | 2022-08-16 | 2022-08-16 | Motor test system based on big data |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115144749A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117110871A (en) * | 2023-10-13 | 2023-11-24 | 北京中航科电测控技术股份有限公司 | Test bench for high-power density permanent magnet motor |
| CN117110871B (en) * | 2023-10-13 | 2024-05-14 | 北京中航科电测控技术股份有限公司 | Test bench for high-power density permanent magnet motor |
-
2022
- 2022-08-16 CN CN202210982247.2A patent/CN115144749A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117110871A (en) * | 2023-10-13 | 2023-11-24 | 北京中航科电测控技术股份有限公司 | Test bench for high-power density permanent magnet motor |
| CN117110871B (en) * | 2023-10-13 | 2024-05-14 | 北京中航科电测控技术股份有限公司 | Test bench for high-power density permanent magnet motor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10310016B2 (en) | Method for the diagnostics of electromechanical system based on impedance analysis | |
| US9759774B2 (en) | Anomaly diagnosis system, method, and apparatus | |
| EP3367198B1 (en) | Method for monitoring and diagnosing rotating machines based on signature analysis of electrical signals | |
| JP3272144B2 (en) | Monitoring and diagnostic equipment for rotating equipment | |
| CN102939463A (en) | System and method of detecting cavitation in pumps | |
| EP2156204B1 (en) | Method and device for off-line testing of electric motors | |
| CN110614539B (en) | Online real-time monitoring and analyzing method for state of spindle of numerical control machine tool | |
| WO2018010679A1 (en) | Motor temperature detection method and device, and aerial vehicle | |
| US11370131B2 (en) | Abnormality detecting device and abnormality detecting method | |
| CN114151373A (en) | Server fan rotating speed regulating method, system, terminal and storage medium | |
| WO2020189014A1 (en) | Abnormality diagnosis device and abnormality diagnosis method | |
| JP2007523414A (en) | Method for detecting wear in a machine | |
| Tunggal et al. | The design of tachometer contact and non-contact using microcontroller | |
| CN115144749A (en) | Motor test system based on big data | |
| US8078422B2 (en) | System and method for testing frequency range | |
| JP2006083928A (en) | Method and device for diagnosing irregularity and deterioration of electric valve device | |
| JP2020153965A (en) | Abnormality diagnosis device and abnormality diagnosis method | |
| CN114460464A (en) | Motor calibration method and device | |
| EP3422025B1 (en) | Method and apparatus for frequency adjustment | |
| CN115389931A (en) | Motor running state monitoring system, method and device | |
| Tunggal et al. | Design of contact and non-contact tachometer using microcontroller | |
| CN112152531B (en) | Three-phase motor current symmetry detection method and device, controller and vehicle | |
| JP2001054237A (en) | System stabilizing control parameter determining device and method thereof | |
| CN112378422A (en) | Diagnosis reasoning system and online diagnosis method of laser gyro inertial navigation system | |
| CN109798970B (en) | Abnormality detection device, abnormality detection method, abnormality detection system, and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |