CN111765962A - System and method for testing vibration noise performance of direct current motor driving system - Google Patents
System and method for testing vibration noise performance of direct current motor driving system Download PDFInfo
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- CN111765962A CN111765962A CN201910184100.7A CN201910184100A CN111765962A CN 111765962 A CN111765962 A CN 111765962A CN 201910184100 A CN201910184100 A CN 201910184100A CN 111765962 A CN111765962 A CN 111765962A
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- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
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Abstract
The invention relates to the field of vibration noise test and analysis, in particular to a vibration noise performance test system and method for a direct current motor driving system, computer equipment for realizing the method and a computer readable storage medium. A system for testing a vibration noise performance of a dc motor driving system according to an aspect of the present invention includes: the monitoring acquisition module is used for monitoring and processing the test state and the test environment data to obtain test working condition data; the screening module is used for judging the validity of the test working condition data and screening based on the validity; the processing module is used for processing the screened effective test working condition data and automatically generating a test report; and the recording module is used for creating a test log, so that subsequent test management and data tracing are facilitated.
Description
Technical Field
The invention relates to the field of vibration noise test and analysis, in particular to a vibration noise performance test system and method for a direct current motor driving system, computer equipment for realizing the method and a computer readable storage medium.
Background
In vehicle driving, many accessories and systems thereof are driven by direct current motors (a power assembly cooling fan, an air conditioning system blower, a fuel pump, a power seat, a power door window and the like), and vibration noise problems caused by the systems in the working process are increasingly not ignored. Therefore, the NVH (vibration, noise and sound vibration roughness) test of the vehicle system is an essential link in the development process of the NVH performance of the whole vehicle.
At present, NVH performance tests of a power assembly cooling fan, an air conditioner system blower, a fuel pump, an electric seat, an electric door and window and the like driven by a direct current motor to work on a vehicle are all operations of manually configuring a data acquisition software system, manually configuring a direct current motor power supply mode and a motor working mode, manually monitoring test environment data, manually judging and screening test data, manually processing the test data by testers, writing test reports and the like according to working conditions defined by standard documents such as test specifications and the like. At present, the whole process needs manual participation, and the requirements on various qualities such as professional skills of testers are high.
The test method and the process for testing and analyzing the vibration noise performance of the vehicle direct current motor driving system at the present stage have the following problems:
the test field test equipment is dispersed, multiple test equipment is required to be simultaneously matched with each other to perform the test, and due to the fact that multiple test equipment is simultaneously operated by multiple users, time difference exists in the aspect of signal acquisition, and the precision and the accuracy of test data can be influenced;
because the monitoring indexes are more, test data acquisition personnel need to highly centralize all indexes in the acquisition process, negligence or omission can occur, and quality accidents are caused to the performance development of vehicle parts;
the test condition data is judged and screened to have the possibility of subjectivity, omission and even wrong judgment;
test data and reports are manually processed, so that the efficiency is low, and the accuracy is difficult to ensure;
the test process has no log reservation, which is not beneficial to test quality tracing and test management improvement.
Therefore, it is desirable to provide a method and a test system capable of performing a vibration noise performance test without being affected by the subjective experience of the tester.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
Therefore, a technical scheme that an intelligent test process of the vibration noise performance of the direct current motor driving system is realized, intelligent screening, judgment and analysis of test working condition data are realized, and test data and reports can be automatically generated after a test is finished according to the test is needed.
To achieve one or more of the above objects, the present invention provides the following technical solutions.
According to a first aspect of the present invention, there is provided a system for testing vibration noise performance of a dc motor driving system, comprising: the monitoring acquisition module is used for monitoring and processing the test state and the test environment data to obtain test working condition data; the screening module is used for judging the validity of the test working condition data and screening based on the validity; the processing module is used for processing the screened effective test working condition data and automatically generating a test report; and the recording module is used for creating a test log, so that subsequent test management and data tracing are facilitated.
According to the vibration noise performance test system of the direct current motor driving system, the modules are integrated together through the software control center according to different test working conditions, test software, motor working energy and motor control signals.
According to the vibration noise performance test system of the direct current motor driving system in one embodiment or any one of the embodiments, the test working conditions include steady-state working condition data acquisition and frequency sweep working condition data acquisition.
According to an embodiment of the invention or any embodiment of the invention, the vibration noise performance test system comprises a motor driving system, a motor driving system and a motor control signal generator, wherein the motor driving system is connected with the motor driving system through a PWM signal generator, and the motor driving system is connected with the motor driving system through a PWM signal generator.
According to an embodiment of the invention or any one of the above embodiments, the dc motor driving system vibration noise performance test system, wherein the monitoring and collecting module includes: the counter is used for acquiring a rotating speed signal of the engine or the fan motor; the voltage sensor and the current sensor are used for collecting the current and the voltage of the fan motor; the thermocouple temperature acquisition board card is used for acquiring the surface temperature of the engine compartment; the temperature and humidity sensor and the atmospheric pressure sensor are used for monitoring environmental state data; and the CAN signal acquisition module is used for acquiring vehicle ECU signals and monitoring the state of the test vehicle.
According to one embodiment of the invention or any embodiment of the invention, the screening module is further configured to automatically perform quality judgment on the test working condition data according to the requirement of the test specification, and screen the optimal data through an intelligent algorithm, wherein the intelligent algorithm comprises abnormal value data elimination, data repeatability screening and optimal data screening.
According to an embodiment of the invention or any of the above embodiments, the processing module is further configured to read the valid test condition data, perform post-processing programming on the valid test condition data with reference to a test specification requirement, and write and store the processed test result to automatically generate a test report.
According to a second aspect of the present invention, there is provided a method for testing vibration noise performance of a dc motor driving system, comprising the steps of: monitoring and processing test state and test environment data to obtain test working condition data; judging the validity of the test working condition data and screening based on the validity; processing the screened test condition data and automatically generating a test report; and creating a test log for subsequent trial management and data tracing.
According to a third aspect of the present invention, there is provided a computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor, when executing the program, implements the steps of the method for vibration noise performance testing of a dc motor drive system according to the second aspect of the present invention.
According to a fourth aspect of the present invention, there is provided a computer readable storage medium having a computer program stored thereon, characterized in that the program is executable by a computer to implement the steps of the method for vibration noise performance testing of a dc motor drive system according to the second aspect of the present invention.
According to one aspect of the invention, the intelligent test process of the vibration noise performance of the direct current motor driving system is realized, the intelligent screening, judgment and analysis of the test working condition data are also realized, the human resource input is reduced, and the test data and the test environment monitoring are more objective and accurate. In addition, the technical scheme of automatically generating test data and reports after the test is finished can be realized according to the test, so that the test period is obviously shortened.
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The above and/or other aspects and advantages of the present invention will become more apparent and more readily appreciated from the following description of the various aspects taken in conjunction with the accompanying drawings, in which like or similar elements are designated with like reference numerals. The drawings comprise:
fig. 1 is a block diagram of a dc motor drive system vibration noise performance test system according to an embodiment of the present invention.
Fig. 2 is a flowchart of a method for testing vibration noise performance of a dc motor driving system according to an embodiment of the present invention.
FIG. 3 is a flowchart of a main program frame of a system for testing vibration noise performance of a DC motor drive system, in accordance with one embodiment of the present invention.
FIG. 4 is a schematic block diagram of a computer device according to yet another embodiment of the present invention.
Detailed Description
In this specification, the invention is described more fully with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. This invention may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. The embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
Words such as "comprising" and "comprises" mean that, in addition to having elements or steps which are directly and unequivocally stated in the description and the claims, the solution of the invention does not exclude other elements or steps which are not directly or unequivocally stated. Terms such as "first" and "second" do not denote an order of the elements in time, space, size, etc., but rather are used to distinguish one element from another.
The present invention is described below with reference to flowchart illustrations, block diagrams, and/or flow diagrams of methods and systems according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions/acts specified in the flowchart and/or block and/or flow diagram block or blocks.
The computer program instructions may be loaded onto a computer or other programmable data processor to cause a series of operational steps to be performed on the computer or other programmable processor to produce a computer implemented process such that the instructions which execute on the computer or other programmable processor provide steps for implementing the functions or acts specified in the flowchart and/or block diagram block or blocks. It should also be noted that, in some alternative implementations, the functions/acts noted in the blocks may occur out of the order noted in the flowcharts. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality/acts involved.
Fig. 1 is a block diagram of a dc motor drive system vibration noise performance test system according to an embodiment of the present invention. The system 100 for testing the vibration noise performance of the dc motor driving system includes a monitoring and collecting module 110, a screening module 120, a processing module 130, and a recording module 140.
The monitoring and collecting module 110 is used for monitoring and processing test status and test environment data, and includes: the counter is used for acquiring a rotating speed signal of the engine or the fan motor; the voltage sensor and the current sensor are used for collecting the current and the voltage of the fan motor; the thermocouple temperature acquisition board card is used for acquiring the surface temperature of the engine compartment; the temperature and humidity sensor and the atmospheric pressure sensor are used for monitoring environmental state data; and the CAN signal acquisition module is used for acquiring vehicle ECU signals and monitoring the state of the test vehicle.
In one embodiment, a standard cabinet is used to integrate the programmable regulated voltage, the PWM controller, the USB chassis, the display control unit, the industrial personal computer, and the monitoring acquisition module 110 into a complete test stand. Optionally, the USB chassis is used to connect the monitoring acquisition module 110, and is connected to the industrial personal computer in a USB3.0 communication manner. A BNC interface with the number of 0-7 is reserved in the counter, can be used for counting high and low level pulse signals, can be converted into frequency and rotating speed, and is used for collecting rotating speed signals of an engine or a fan motor; the voltage sensor and the current sensor are used for collecting the current and the voltage of the fan motor; the thermocouple temperature acquisition board card can be used for acquiring the surface temperature of an engine compartment or other objects and monitoring the surface temperature; the CAN signal corresponds to CAN RS232 serial port communication and is used for collecting vehicle ECU signals and monitoring the state of a test vehicle; temperature and humidity sensor and atmospheric pressure sensor are used for monitoring experimental environment state data, and the two sensors all adopt that RS485 communication mode is connected to the industrial computer.
The power input and power output interfaces are respectively used for connecting the output of the programmable stabilized voltage power supply and supplying power to the fan motor, for example, the power input positive and negative interfaces are respectively correspondingly connected with the positive and negative output of the programmable stabilized voltage power supply; the power output positive and negative interfaces are respectively connected with the positive and negative inputs of the tested motor. The programmable stabilized voltage supply adopts a USB3.0 communication mode to be connected to an industrial personal computer.
In one embodiment, a PWM signal generator is used to provide a square wave control signal to the motor under test. And automatically configuring acquisition parameters and commands by the system according to the definitions of the test specifications on different specifications. The collection working conditions are mainly divided into steady-state working condition data collection and sweep frequency (unsteady state) working condition data collection. Lab, where the vibration noise signal acquisition used the SIMENS-LMS SCANDAS series cabinet. Lab calls the third-party software for processing by using ActiveX technology in LabVIEW. LabVIEW may act as an ActiveX client, accessing objects, properties, methods, and events associated with an ActiveX enabled application. Lab software is also object-oriented programming, and by calling the Windows Automation interface (COM interface) of LMS test. Various setting parameters (such as analysis bandwidth, acquisition mode, acquisition duration and the like) in the software can be configured according to different test working conditions through programming.
The screening module 120 is configured to determine validity of the test condition data and perform screening based on the validity. Optionally, the screening module 120 automatically performs quality judgment on each group of test data according to the requirement of the test specification, and screens the optimal data by using an intelligent algorithm, where the algorithm includes:
1. and removing abnormal value data. Establishing a database for all past test data, counting data characteristics such as maximum values, minimum values, average values, fluctuation rates and the like of corresponding test points for historical data according to different working conditions, different test point positions and different test directions so as to eliminate over-large test data and over-small test data and eliminate fluctuation rate abnormal data;
2. and (5) carrying out data repeatability screening. And (4) counting the mean value, the variance and the fluctuation rate of the multiple groups of test data, setting the inter-group tolerance targets of different counting values, and rejecting the data which do not meet the repeatability requirement.
3. And (4) screening optimal data. Sorting the data which pass through the data repeatability screening, wherein the sorting principle is that the fluctuation rate of various types of data (all, 1/3 Octave, AI) in each group of test data and the deviation size of the distance mean value are sorted, and the larger the fluctuation rate is, the lower the score is; the larger the deviation from the mean, the lower the score. The test group with the highest final score was the best data.
The processing module 130 is used for processing the screened valid test condition data and automatically generating a test report. Optionally, the processing module 130 is further configured to read the valid test condition data, and perform post-processing programming on the valid test condition data with reference to a test specification requirement, and write and save the processed test result to automatically generate a test report. In one embodiment, based on a LabVIEW platform, a SIMENS-LMSTest.Lab software COM interface is called by utilizing an ActiveX technology, and test data are automatically read, subjected to quality screening and correspondingly subjected to data post-processing programming according to specific requirements of test specifications, so that the system can automatically process the test data; and then, calling a Microsoft Excel & Word program by utilizing an ActiveX technology, writing the generated and stored processed test result, and automatically generating a test report for archiving.
Preferably, in this embodiment, the monitoring and acquisition module 110 and the PWM controller are integrated based on LabVIEW platform programming, and the operating cycles of the monitoring and acquisition module 110 and the PWM controller are controlled by a program, so that the functions of the two independent systems are integrated. Lab monitoring and collecting module is called by using ActiveX technology in LabVIEW and the work of the module is controlled; communicating through a USB3.0 in LabVIEW, and controlling a voltage-stabilizing direct-current power supply by utilizing a programmable instrument Standard Command (SCPI), wherein the voltage of the power supply is input to two ends of a working motor; the PWM controller is controlled and programmed through USB3.0 communication in LabVIEW by using VISA communication technology, and the control signal input to the working motor is controlled.
The recording module 140 is used for creating a test log, so as to facilitate subsequent experiment management and data tracing. And establishing a corresponding document for each step of user operation in the program, and recording user operation history including test task preparation, test task establishment, test condition execution, qualified condition data recording and the like, so that the test quality tracing and test management improvement in the later period are facilitated.
Fig. 2 is a flowchart of a method for testing vibration noise performance of a dc motor driving system according to an embodiment of the present invention. The method 200 for testing the vibration noise performance of the direct current motor driving system comprises the following steps: acquiring test condition data (step 210); screening effective test condition data (step 220); processing the test condition data and generating a test report (step 230); and a test log is created (step 240).
Before starting the test, the test equipment mounting work needs to be performed first. Optionally, a standard cabinet is used to integrate the programmable regulated voltage, the PWM controller, the USB chassis, the display control unit, the industrial personal computer, and the monitoring acquisition module 110 into a complete test stand. Optionally, the USB chassis is used to connect the monitoring acquisition module 110, and is connected to the industrial personal computer in a USB3.0 communication manner. A BNC interface with the number of 0-7 is reserved in the counter, can be used for counting high and low level pulse signals, can be converted into frequency and rotating speed, and is used for collecting rotating speed signals of an engine or a fan motor; the voltage sensor and the current sensor are used for collecting the current and the voltage of the fan motor; the thermocouple temperature acquisition board card can be used for acquiring the surface temperature of an engine compartment or other objects and monitoring the surface temperature; the CAN signal corresponds to CAN RS232 serial port communication and is used for collecting vehicle ECU signals and monitoring the state of a test vehicle; temperature and humidity sensor and atmospheric pressure sensor are used for monitoring experimental environment state data, and the two sensors all adopt that RS485 communication mode is connected to the industrial computer. And then starting a test program, creating or opening a test task, and inputting test task information or selecting a previous test file.
Then, in step 210, the test condition data and the test environment data are monitored and processed by the monitoring acquisition module 110 to obtain the test condition data. When data testing is carried out, a testing interface is started and configured, various setting parameters (such as analysis bandwidth, acquisition mode, acquisition duration and the like) in software can be configured according to different test working conditions through programming, and then an automatic testing mode or a manual testing mode is selected. In the automatic test mode, the engine is respectively opened and closed to carry out back noise test and working condition test, and then the engine is respectively closed and opened to test the steady-state working condition and the frequency sweeping working condition. In the manual test mode, a steady-state working condition test mode and a sweep working condition test mode are respectively executed.
In step 220, automatically performing quality judgment on each group of test data according to the requirements of the test specification, and screening optimal data by using an intelligent algorithm, wherein the algorithm comprises:
1. and removing abnormal value data. Establishing a database for all past test data, counting data characteristics such as maximum values, minimum values, average values, fluctuation rates and the like of corresponding test points for historical data according to different working conditions, different test point positions and different test directions so as to eliminate over-large test data and over-small test data and eliminate fluctuation rate abnormal data;
2. and (5) carrying out data repeatability screening. And (4) counting the mean value, the variance and the fluctuation rate of the multiple groups of test data, setting the inter-group tolerance targets of different counting values, and rejecting the data which do not meet the repeatability requirement.
3. And (4) screening optimal data. And sorting the data which are subjected to data repeatability screening for the data meeting the repeatability requirement. The sorting principle is that the fluctuation rates of various types of data (Overall, 1/3 Octave, AI) in each group of test data and the deviation size of the distance mean value are sorted, and the larger the fluctuation rate is, the lower the score is; the larger the deviation from the mean, the lower the score. The test group with the highest final score was the best data. It is then determined whether the test task has been completed, and the process proceeds to step 230 when the determination is complete.
In step 230, the valid test condition data is read and post-processing programming is performed on the valid test condition data with reference to the test specification requirements, while the processed test results are written and saved to automatically generate a test report. In one embodiment, a LabVIEW-based platform calls a SIMENS-LMS test.Lab software COM interface by using an ActiveX technology, and test data is automatically read, quality screened and programmed by corresponding data post-processing according to the specific requirements of test specifications, so that the system automatically processes the test data; and then, calling a Microsoft Excel & Word program by utilizing an ActiveX technology, writing the generated and stored processed test result, and automatically generating a test report for archiving.
In step 240, a test log is created to facilitate subsequent trial management and data tracing. And establishing a corresponding document for each step of user operation in the program, and recording user operation history including test task preparation, test task establishment, test condition execution, qualified condition data recording and the like, so that the test quality tracing and test management improvement in the later period are facilitated.
FIG. 3 is a flowchart of a main program frame of a system for testing vibration noise performance of a DC motor drive system, in accordance with one embodiment of the present invention.
In step 310, a test procedure is initiated. In step 320, a test task is created/opened. When a new test task is established, inputting test task information and starting SIMENS-LMS test. Lab, when a test task is opened, selects a previous test file and initiates SIMENS-LMS test to load the previous test task.
In step 330, it is determined whether the test task has been executed, and step 340 is entered when the test task has been executed to complete the acquisition of test data. In step 340, the test data is read, and post-processing programming is performed on the test data with reference to the test specification requirements, while the processed test results are written and saved to automatically generate a test report. In one embodiment, a LabVIEW-based platform calls a SIMENS-LMS test.Lab software COM interface by using an ActiveX technology, and test data is automatically read, quality screened and programmed by corresponding data post-processing according to the specific requirements of test specifications, so that the system automatically processes the test data; and then, calling a Microsoft Excel & Word program by utilizing an ActiveX technology, writing the generated and stored processed test result, and automatically generating a test report for archiving.
In step 330, when it is determined that the test task is not executed, the method proceeds to step 350. In step 350, a test interface is configured for data testing. Alternatively, an automatic test mode or a manual test mode may be initiated. In the automatic test mode, the engine is closed to carry out back noise test and working condition test, and the engine is started to carry out back noise test and working condition test, when the back noise test is finished, the steady-state working condition test and the frequency sweeping working condition test are carried out under the condition that the engine is closed, and the steady-state working condition test and the frequency sweeping working condition test are carried out under the condition that the engine is started; in the manual test mode, a steady-state condition test mode and a sweep-frequency condition test mode may be turned on.
In the manual test mode of one embodiment, when the steady-state working condition test mode is started, power supply voltage and PMW signal output (preset duty ratio) are configured, LMS Section configuration acquisition software is switched and is switched to a Range interface to finish automatic Range setting, steady-state working condition test is executed after setting is finished, and the power supply voltage is configured to 0V after the test is finished; when a frequency sweep working condition test mode is started, power supply voltage and PMW signal output (preset maximum duty ratio) are configured, LMS Section configuration acquisition software setting is switched, the LMS Section configuration acquisition software setting is switched to a Range interface to complete automatic Range setting, frequency sweep working condition test (PMW duty ratio adjustment) is executed after setting is completed, and the power supply voltage is configured to 0V after the test is finished.
In the automatic test mode of one embodiment, when the environmental condition monitoring is abnormal in the steady-state condition test, whether overload occurs or not is judged. When overload is judged, deleting overload operation, interrupting LMS test.Lab, switching LMS Section configuration acquisition software setting and switching to a Range interface to finish automatic Range setting, and executing steady state working condition test after setting is finished; and when non-overload is judged, deleting the operation of the last measurement, and collecting and processing the abnormal state so as to carry out the next steady-state working condition test.
In the automatic test mode of an embodiment, when the environmental condition monitoring in the sweep frequency working condition test is abnormal, whether overload exists is judged. When overload is judged, the overload operation is deleted, LMS test.Lab is interrupted, NVH test is carried out, and the frequency sweeping working condition test is executed after the test is finished; and when judging that the frequency sweep is not overloaded, deleting the operation of the last measurement, and acquiring the abnormal state for processing so as to carry out the next frequency sweep working condition test. And when the environmental state monitoring is abnormal again, judging whether overload occurs again. When overload is judged, the overload operation is deleted and the power supply voltage is reset to zero; and when judging that the overload is not generated, deleting the operation of the last measurement, returning the power supply voltage to zero, and collecting and processing the abnormal state.
FIG. 4 is a schematic block diagram of a computer device according to yet another embodiment of the present invention. The computer device 40 comprises a memory 410, a processor 420 and a computer program 430 stored on said memory 410 and executable on said processor 420. The processor 420 runs the program to implement the method for testing the vibration noise performance of the dc motor driving system.
In addition, as described above, the present invention can also be embodied as a recording medium in which a program for causing a computer to execute the method of the above-described vibration noise performance test of the direct current motor drive system according to the present invention is stored.
As the recording medium, various types of recording media such as a disk (e.g., a magnetic disk, an optical disk, etc.), a card (e.g., a memory card, an optical card, etc.), a semiconductor memory (e.g., a ROM, a nonvolatile memory, etc.), a tape (e.g., a magnetic tape, a cassette tape, etc.), and the like can be used.
By recording a computer program that causes a computer to execute the method of the vibration noise performance test of the direct current motor drive system in the above-described embodiment in these recording media. The method for testing the vibration noise performance of the dc motor drive system according to the above-described embodiment can be executed by loading the recording medium on a computer, reading a computer program recorded on the recording medium by the computer, storing the computer program in a memory, and reading and executing the computer program from the memory by a processor (CPU: Central Processing Unit (CPU)), which is provided in the computer.
As described above, according to one aspect of the present invention, an intelligent test process of vibration noise of a dc motor driving system and intelligent screening, judgment and analysis of test condition data can be achieved, and the experience and skill requirements of such tests on engineers and related testers are reduced, so that not only can the manpower training cost for enterprises be reduced, but also the number of personnel parameters in the original test process can be reduced, the human resource investment is reduced, and the personnel utilization rate and the unit production efficiency are improved; the management of the test process can reduce the original personnel participation degree, so that the test data and the test environment are more objective and accurate to monitor; and meanwhile, after the test is finished, a SIMENS-LMS test Lab software COM interface is called by using an ActiveX technology based on a LabVIEW platform, and the test data is automatically read and programmed with corresponding data post-processing according to the specific requirements of the test specification, so that the system automatically processes the test data to generate a test report, and the test period is greatly shortened.
The embodiments and examples set forth herein are presented to best explain the embodiments in accordance with the present technology and its particular application and to thereby enable those skilled in the art to make and utilize the invention. However, those skilled in the art will recognize that the foregoing description and examples have been presented for the purpose of illustration and example only. The description as set forth is not intended to cover all aspects of the invention or to limit the invention to the precise form disclosed.
Claims (10)
1. A direct current motor drive system vibration noise capability test system which characterized in that includes:
the monitoring acquisition module is used for monitoring and processing the test state and the test environment data to obtain test working condition data;
the screening module is used for judging the validity of the test working condition data and screening based on the validity;
the processing module is used for processing the screened effective test working condition data and automatically generating a test report; and
and the recording module is used for creating a test log, so that subsequent test management and data tracing are facilitated.
2. The system of claim 1, wherein the modules are integrated by a software control center according to different test conditions to configure test software, motor operating energy and motor control signals.
3. The system of claim 2, wherein the test conditions include steady state condition data acquisition and swept condition data acquisition.
4. The system of claim 2, wherein the motor operating energy source is provided by a programmable regulated power supply and the motor control signal is provided by a PWM signal generator.
5. The system of claim 1 or 2, wherein the monitoring acquisition module comprises:
the counter is used for acquiring a rotating speed signal of the engine or the fan motor;
the voltage sensor and the current sensor are used for collecting the current and the voltage of the fan motor;
the thermocouple temperature acquisition board card is used for acquiring the surface temperature of the engine compartment;
the temperature and humidity sensor and the atmospheric pressure sensor are used for monitoring environmental state data; and
and the CAN signal acquisition module is used for acquiring vehicle ECU signals and monitoring the state of the test vehicle.
6. The system of claim 1 or 2, wherein the screening module is further configured to automatically perform quality judgment on the test condition data according to the requirements of the test specification, and screen the optimal data through an intelligent algorithm, wherein the intelligent algorithm comprises abnormal value data elimination, data repeatability screening and optimal data screening.
7. The system of claim 1 or 2, wherein the processing module is further configured to read the valid test condition data and to post-process program the valid test condition data with reference to a test specification requirement while writing and saving processed test results to automatically generate a test report.
8. A method for testing the vibration noise performance of a direct current motor driving system is characterized by comprising the following steps:
monitoring and processing test state and test environment data to obtain test working condition data;
judging the validity of the test working condition data and screening based on the validity;
processing the screened test condition data and automatically generating a test report; and
and creating a test log for subsequent test management and data tracing.
9. A computer device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the program is executed to implement the steps of:
monitoring and processing test state and test environment data to obtain test working condition data;
judging the validity of the test working condition data and screening based on the validity;
processing the screened test condition data and automatically generating a test report; and
and creating a test log for subsequent test management and data tracing.
10. A computer-readable storage medium on which a computer program is stored, the program, when executed by a processor, performing the steps of:
monitoring and processing test state and test environment data to obtain test working condition data;
judging the validity of the test working condition data and screening based on the validity;
processing the screened test condition data and automatically generating a test report; and
and creating a test log for subsequent test management and data tracing.
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| CN201910184100.7A CN111765962A (en) | 2019-03-12 | 2019-03-12 | System and method for testing vibration noise performance of direct current motor driving system |
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| CN201910184100.7A CN111765962A (en) | 2019-03-12 | 2019-03-12 | System and method for testing vibration noise performance of direct current motor driving system |
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