CN115932457A - Inspection method and system - Google Patents
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- CN115932457A CN115932457A CN202310106910.7A CN202310106910A CN115932457A CN 115932457 A CN115932457 A CN 115932457A CN 202310106910 A CN202310106910 A CN 202310106910A CN 115932457 A CN115932457 A CN 115932457A
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Abstract
The application discloses a detection method and a system, which are applied to driving equipment to be detected, wherein the driving equipment to be detected is respectively connected with a motor and power supply equipment, and the detection method comprises the following steps: burning a preset test program into the driving equipment to be tested; when the power supply equipment supplies power to the driving equipment to be tested, running a test program through the driving equipment to be tested to enable the driving equipment to be tested to output a plurality of fixed currents to the motor; when the driving equipment to be tested outputs fixed current to the motor, acquiring temperature information of the driving equipment to be tested according to preset interval time to obtain at least two pieces of temperature information corresponding to the fixed current; calculating at least two pieces of temperature information to obtain a slope corresponding to the fixed current; and determining that the driving equipment to be tested passes the test in response to the slope being smaller than the slope threshold. The quality of the driving equipment to be tested is tested by a method of controlling output fixed current through a test program, so that the problems of low testing efficiency and inaccurate testing result caused by manual testing of the driving equipment in the prior art are solved.
Description
Technical Field
The present disclosure relates to the field of manufacturing technology of driving devices, and more particularly, to a method and a system for testing a driving device.
Background
Servo driver and converter product all belong to the drive device, and servo driver and converter product all contain the core power device generally inside, and this core power device generally is integrated power module, and integrated power module includes: IPM Module (Intelligent Power Module), PIM Module (Power Integrated Module), and the like. When the integrated power module is mounted, a thermal silicone grease needs to be applied between the integrated power module and the heat sink to ensure reliable heat dissipation of the driving device.
However, in the actual production process, due to unskilled manual operation or careless operation, the heat-dissipating silicone grease is unevenly applied, or due to loose screws or screw locks which are not installed between the integrated power module and the heat sink, or due to poor quality of supplied materials of the heat-conducting material, the thermal resistance between the integrated power module and the heat sink is large, and finally the integrated power module cannot conduct heat to the heat sink, and the accumulated heat causes the integrated power module to be over-warm and irreversibly damaged, so that the whole product cannot reliably run. The prior art is generally inspected through a manual production inspection mode, the inspection efficiency of the inspection mode is low, the inspection result is not accurate enough, the reject ratio of products is high, and the requirements of customers cannot be met.
Disclosure of Invention
In view of this, the present application provides a method and a system for checking, so as to solve the problems of low checking efficiency and inaccurate checking result caused by manual checking of a driving device in the prior art.
The application provides a detection method, which is applied to driving equipment to be detected, wherein the driving equipment to be detected is respectively connected with a motor and power supply equipment, and the detection method comprises the following steps:
burning a preset test program into the to-be-tested driving equipment;
when the power supply equipment supplies power to the driving equipment to be tested, the testing program is operated through the driving equipment to be tested, so that the driving equipment to be tested outputs a plurality of fixed currents to the motor;
when the driving equipment to be tested outputs the fixed current to the motor, acquiring temperature information of the driving equipment to be tested according to preset interval time to obtain at least two pieces of temperature information corresponding to the fixed current;
calculating at least two pieces of temperature information to obtain a slope corresponding to the fixed current;
and in response to the slope being smaller than a slope threshold, determining that the driving equipment to be tested passes the inspection.
Optionally, the step of outputting the fixed current to the motor by the driving device to be tested includes:
injecting voltage pulses into the motor through the test program so as to identify the line inductance of the motor, and then performing coordinate transformation and parameter calculation on the line inductance of the motor to obtain the initial position of the motor rotor;
optionally, if the motor includes a position detection device, the initial position of the rotor of the motor may also be obtained by the position detection device;
converting the fixed current to a first axis and a second axis perpendicular to each other by the test program;
and outputting the fixed current to the motor based on the control reference of the first shaft and the control reference of the second shaft so that the motor rotates at the set fixed effective current under the condition of no load.
Optionally, the step of outputting the fixed current to the motor based on the control reference of the first shaft and the control reference of the second shaft includes:
setting the control reference of the first shaft to a first fixed value and the control reference of the second shaft to a second fixed value, wherein the first fixed value is larger than the second fixed value;
and acquiring an accumulated angle value of the motor through the test program.
Optionally, the ratio of the fixed current to the rated current of the driving device to be tested ranges from 0.5 to 8.
Optionally, the step of calculating at least two pieces of temperature information to obtain a slope corresponding to the fixed current includes:
dividing at least two pieces of temperature information into a plurality of stages through the test program;
calculating all temperature information in each stage to obtain a slope corresponding to the stage;
and comparing the slope corresponding to each stage with the slope threshold value to judge whether the driving equipment to be tested passes the inspection.
Optionally, after the step of obtaining at least two pieces of temperature information corresponding to the fixed current, the inspection method further includes:
detecting all temperature information through the test program;
and in response to all the temperature information having abnormal temperature information, controlling the drive equipment to be tested to rerun the test program.
Optionally, the step of detecting all temperature information by the test program includes:
comparing all the temperature information according to the acquisition time;
responding to the longer acquisition time, the larger the temperature value of the temperature information is, and all the temperature information does not have the abnormal temperature information.
Optionally, the test program is a preset independent program, a partial program in the driver device to be tested, or a test item program in the driver device to be tested.
Optionally, the inspection method further comprises:
and in response to the slope being greater than or equal to the slope threshold, determining that the driving device to be tested does not pass the test.
The application also provides an inspection system, which comprises a driving device to be inspected, a motor and a power supply device, wherein the driving device to be inspected is respectively connected with the motor and the power supply device, and the driving device to be inspected is used for executing the inspection method.
The beneficial effect of this application is: different from the prior art, the quality of the driving equipment to be tested is tested by a method of controlling output fixed current through a test program, and when the slope is smaller than a slope threshold value, the driving equipment to be tested passes the test, so that the thermal resistance between the driving equipment to be tested and a radiator is qualified, and the reliability of a product is high; when the slope is larger than or equal to the slope threshold, the driving equipment to be tested does not pass the test, which shows that the thermal resistance between the driving equipment to be tested and the radiator is too large, the reliable operation can not be realized, and the product is unqualified; the inspection method avoids the inaccuracy of an inspection result through manual inspection in the prior art, can quickly and efficiently judge whether the driving equipment to be inspected is qualified or not, and ensures the production yield and the reliability of the driving equipment to be inspected.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a flow chart of one embodiment of a driver verification method of the present application;
FIG. 2 is a connection diagram of a driving device under test according to the present application;
FIG. 3 is a control flow diagram of an embodiment of the verification method of the present application.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present application, the following describes the inspection method and system provided in the present application in further detail with reference to the accompanying drawings and specific embodiments. It is to be understood that the embodiments described are only a few embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
The terms "first", "second", etc. in this application are used to distinguish different objects, and are not used to describe a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
The application provides a checking method and a checking system, which are used for solving the problems of low checking efficiency and inaccurate checking result caused by manual checking of driving equipment in the prior art.
Referring to fig. 1, fig. 2 and fig. 3, fig. 1 is a flow chart of an embodiment of a method for inspecting a driving device according to the present application; FIG. 2 is a connection diagram of a driving device under test according to the present application; FIG. 3 is a control flow diagram of an embodiment of the verification method of the present application.
In one embodiment, the inspection method of the present application is applied to the driving device under test 10, as shown in fig. 2, the driving device under test 10 is connected to the motor 30 and the power supply device 20 respectively.
The driving device can be a servo driver product or a frequency converter product, the driving device 10 to be tested is connected with the motor 30, the motor 30 can be in an idle state without any load, the device for testing can be conveniently built, then the driving device 10 to be tested is connected into the power supply voltage of the power supply device 20, and the power supply voltage can be single-phase or three-phase mains supply alternating voltage and can also be direct current voltage.
As shown in fig. 1, the inspection method of the present application specifically includes the following steps:
step S100: a preset test program is burned into the drive device 10 to be tested.
Specifically, a test program debugged in advance is burned in the driving device 10 to be tested, or a complete machine program including a test program segment is burned in the driving device 10 to be tested.
The test program is a preset independent program, a partial program in the driver device 10 to be tested, or an inspection item program in the driver device 10 to be tested.
Specifically, the test program may be an independent test program, or may be a part of a program in the driver, as an independent function of the driver, or may be one of the items detected by the driver, and may be appropriately selected according to the needs.
Step S200: when the power supply device 20 supplies power to the drive device under test 10, a test program is run by the drive device under test 10 so that the drive device under test 10 outputs a plurality of fixed currents to the motor 30.
Specifically, after a test program is burned into the driving device 10 to be tested, or a complete machine program including a test program segment is burned into the driving device 10 to be tested, the driving device to be tested is connected with the motor 30, a power supply voltage is connected, the driving device is controlled to operate by the test program, and the driving device is ensured to output a plurality of fixed currents, wherein the fixed currents generally refer to fixed effective current values, and one of the plurality of fixed currents can be selected for use, so that the temperature information under the state of the fixed currents can be recorded subsequently.
Optionally, the test program controls the driving device to operate, so that the driving device outputs a plurality of other fixed currents, and each fixed current can respectively record temperature information in the states of the other fixed currents by using the method of the embodiment of the present application, thereby improving the detection accuracy.
The test program controls the driving equipment to operate so that the power line of the driving equipment outputs fixed current. It can be understood that the test program controls the driving device to operate continuously, and ensures that the power line of the driving device outputs a fixed current, i.e., the driving device supplies three-phase ac power to the motor 30, and generally has three or four lines.
Step S300: when the driving device 10 to be tested outputs a fixed current to the motor 30, the temperature information of the driving device 10 to be tested is acquired according to a preset interval time, and at least two pieces of temperature information corresponding to the fixed current are obtained.
Specifically, the test program controls the drive equipment to be tested to continuously output a fixed current to the motor, the test program collects and records temperature information of the drive equipment to be tested according to a preset interval time to obtain temperature information corresponding to the fixed current, and at least two pieces of temperature information are collected for calculating a subsequent temperature rising slope. It can be understood that once the module temperature is sampled at intervals, the preset interval time value T can be set s At intervals of T s The module temperature is sampled once, the time T is counted, and when the T is more than or equal to a preset value T s Then, acquiring the temperature of the driving equipment, and resetting the count of the time T; when T is less than preset value T s When the temperature is not acquired, the time T is counted continuously until the T is more than or equal to the preset value T s And then, carrying out temperature acquisition on the driving equipment again until at least two pieces of temperature information are acquired.
Optionally, a test program is run, and initial temperature information of the driving device is monitored and recorded. Specifically, after the driving device 10 to be tested is connected to the power supply voltage, a test program is run, and the test program monitors and records initial temperature information of the driving device for subsequent calculation of the temperature rising slope.
In step S300, the step of the driving device under test 10 outputting a fixed current to the motor 30 includes:
step S310: voltage pulse injection is carried out on the motor 30 through a test program, so that line inductance of the motor 30 is identified, and then coordinate transformation and parameter calculation are carried out on the line inductance of the motor 30, so that the initial position of a motor rotor is obtained.
Alternatively, if the motor 30 includes a position detection device, the initial position of the rotor of the motor may also be obtained by the position detection device.
Step S320: the fixed current is converted to a first axis and a second axis perpendicular to each other by a test procedure.
Step S330: based on the control reference of the first shaft and the control reference of the second shaft, a fixed current is output to the motor 30 so that the motor 30 rotates at a set fixed effective current under no load.
In the prior art, the driving device generally adopts a space vector control method, and a program performs Clark conversion (equivalent coordinate conversion) and Park conversion (equivalent power coordinate) on the sampled phase current to convert current information into orthogonal q-axis and d-axis, wherein the d-axis represents exciting current, the control reference of the d-axis is set to be 0, and the control reference of the q-axis needs to be adjusted through a loop according to the actual load condition.
In the embodiment of the present application, contrary to the prior art, a test program first performs voltage pulse injection on the motor to identify a line inductance of the motor, and then performs Clark transformation, park transformation, and parameter calculation on the line inductance of the motor to obtain an initial position of a rotor of the motor, if the motor includes a position detection device, the initial position of the rotor of the motor may also be obtained by the position detection device, and then a fixed current is converted into a first axis and a second axis perpendicular to each other by the test program, so that it can be understood that the first axis is a d axis, the second axis is a q axis, and the d axis is orthogonal to the q axis, and based on a control reference of the first axis and a control reference of the second axis, the fixed current may be output to the motor 30, so that the motor 30 rotates at a set fixed effective current under a no-load condition.
In step S330, the step of outputting the fixed current to the motor 30 based on the control reference of the first shaft and the control reference of the second shaft specifically includes:
step S331: setting the control reference of the first shaft as a first fixed value, and setting the control reference of the second shaft as a second fixed value, wherein the first fixed value is larger than the second fixed value;
step S332: the accumulated angle value of the motor 30 is obtained through the test procedure.
It is to be understood that the first axis is a d-axis, the control reference of the first axis is set to a first fixed value, the first fixed value can be set to any value, the first fixed value is generally set to be larger, the second axis is a q-axis, the control reference of the second axis is set to a second fixed value, the second fixed value can be set to be smaller, and the first fixed value is generally larger than the second fixed value. Based on the first fixed value and the second fixed value, the accumulated angle value of the motor 30 is obtained through the test program, so that the driving device can output a fixed effective current value to the motor 30, and the motor 30 can rotate under the condition of no load.
The ratio range of the fixed current to the rated current of the driving device 10 to be detected can be selected to be 0.5-8, and the detection time can be shortened well.
After the step of obtaining at least two pieces of temperature information corresponding to the fixed current in step S300, the inspection method further includes:
step S340: detecting all temperature information through a test program;
step S350: and controlling the driving device to be tested 10 to rerun the test program in response to all the temperature information having abnormal temperature information.
In the embodiment of the present application, before calculating the rising slope of the temperature, the detected temperature information may be compared, all the temperature information is detected through the test program, and in response to all the temperature information having abnormal temperature information, the driving device to be tested 10 is controlled to re-run the test program. The abnormal temperature information is determined as abnormal temperature information when the temperature information value is not increased, and the driving device 10 to be tested is controlled to operate the test program again, that is, whether the detected driving device needs to operate the test program again is determined in advance by determining whether the temperature information value is gradually increased.
In step S340, the step of detecting all temperature information through the test program includes:
step S341: comparing all the temperature information according to the acquisition time;
step S342: the temperature value of the temperature information is larger in response to the longer acquisition time, and all the temperature information does not have abnormal temperature information.
It can be understood that all the temperature information can be compared according to the acquisition time, the longer the acquisition time is, the larger the temperature value of the temperature information is, the temperature information of the driving equipment acquired for many times is compared, and if the temperature information value is gradually increased (T) 1 <T 2 <…<T n ) If the temperature information is judged to be normal temperature information, all the temperature information does not have abnormal temperature information, and the slope calculation of the next step can be continued.
Step S400: and calculating at least two pieces of temperature information to obtain the slope corresponding to the fixed current.
It can be understood that the test program calculates at least two temperature information to obtain the temperature rising slope corresponding to the fixed current, so that whether the driving equipment is qualified or not can be conveniently judged according to the temperature rising slope subsequently. The calculation method of the slope specifically comprises the following steps: k = (T) n -T 1 ) /(T × (n-1)), where the slope is represented by k values, n represents the number of samples, and n ≧ 2 n Representing the temperature value of the nth sample.
Step S400 of calculating at least two pieces of temperature information to obtain a slope corresponding to the fixed current includes:
step S410: dividing at least two pieces of temperature information into a plurality of stages through a test program;
step S420: calculating all temperature information in each stage to obtain a slope corresponding to the stage;
step S430: and comparing the slope corresponding to each stage with a slope threshold value to judge whether the driving device 10 to be tested passes the inspection.
It can be understood that at least two pieces of temperature information are divided into a plurality of stages through a test program, a slope threshold value in each stage can be preset, all pieces of temperature information in each stage are calculated to obtain a slope corresponding to each stage, and then the slope corresponding to each stage is compared with the slope threshold value, so that whether the driving device 10 to be tested passes the test or not is judged more accurately. The slope calculation method of each stage specifically comprises the following steps: k n ＝(T n -T n-1 ) V (T), or K n ＝(T n -T n-s ) V (s × T), where s<n，K n Represents the slope, T n Indicating the value of the temperature information and T indicating the interval time for collecting the temperature information.
Step S500: in response to the slope being less than the slope threshold, it is determined that the drive device under test 10 passes the test.
Specifically, whether the slope is smaller than the slope threshold is judged according to the preset slope threshold and the calculated slope, if the slope is smaller than the slope threshold, the driver device 10 to be tested is judged to pass the inspection, which indicates that the temperature rise value of the driver device 10 to be tested is small, the heat dissipation effect of the installation is good, the driver device 10 to be tested is qualified, and the next project test can be performed.
The inspection method of the present application further includes step S600:
step S600: in response to the slope being greater than or equal to the slope threshold, it is determined that the drive device under test 10 has failed the verification.
It can be understood that, according to the preset slope threshold and the calculated slope, it is determined whether the slope is greater than or equal to the slope threshold, and if the slope is greater than or equal to the slope threshold, it is determined that the driving device 10 to be tested does not pass the inspection, which indicates that the temperature of the driving device 10 to be tested rises too fast, the heat dissipation is poor, the driving device 10 to be tested is not qualified, and there may be an installation problem, and then a problem needs to be checked or repaired.
Optionally, after the test program collects the temperature information at least twice, the test program controls the driving device to stop outputting the current. Specifically, after the test program collects temperature information for 2 times or more than 2 times, namely after the required temperature data is collected, the power line of the driving device is controlled to stop outputting current, and electric energy can be saved.
Optionally, the test result of the driving device is read by setting different colors of the nixie tubes in the test program.
It can be understood that by setting different colors of the nixie tube in the test program, if green is set to be qualified for the detection of the driving device, and red is set to be unqualified for the detection of the driving device, the operator can directly read the test result of the driving device according to the different colors of the nixie tube. Optionally, the test result can also be distinguished through the display lamp of the product to be tested, perhaps directly informs the host computer through the mode of control program communication to show on the screen, the simple and direct demonstration testing result of ability avoids operation personnel secondary to judge the error.
As shown in fig. 3, fig. 3 is a control flow chart of an embodiment of the inspection method of the present application, and the specific implementation of the test procedure in the embodiment of the present application is as follows:
s11: starting, namely starting a test program;
s12: acquiring the initial temperature of the driving equipment 10 to be tested;
s13: the driving device to be tested 10 outputs a fixed current;
s14: counting T;
s15: judging whether T is greater than or equal to a preset value, if so, continuing to step S16, and if not, returning to step S14;
s16: collecting temperature information of the driving equipment 10 to be tested, accumulating the collection times n, and resetting the count T;
s17: judging whether the acquisition times n are greater than or equal to a preset value m, if so, continuing to step S18, otherwise, returning to step S14;
s18: calculating a rising slope k value of the temperature information;
s19: judging whether the slope k value is larger than or equal to a preset value, if so, displaying S20, and if not, displaying S21;
s20: the test fails;
s21: the test is passed;
s22: the test procedure is ended.
It can be understood that, firstly, the test program is started, and the test program firstly collects the initial temperature of the driving device 10 to be tested; the testing program controls the to-be-tested driving device 10 to output a fixed current, meanwhile, the time T is counted, whether the T value is larger than or equal to a preset value or not is judged, if yes, the next step is continued, if not, the time T is counted continuously until the T value is larger than or equal to the preset value, when the T value is larger than or equal to the preset value, the temperature information of the to-be-tested driving device 10 is collected, and the collection times n are accumulated; and judging whether the acquisition times n are greater than or equal to a preset value m, if so, continuing the next step, otherwise, returning to the step of counting the time T in a circulating manner until the acquisition times n are greater than or equal to the preset value m, then calculating a rising slope k value of the temperature information, obtaining the slope k value, judging whether the slope k value is greater than or equal to the preset value, if so, displaying that the test is failed, otherwise, passing the test, and finally ending the test program.
The inspection method provided by the application can screen the products with untight installation of the driving equipment and the radiator caused by factors such as man-made factors, materials and methods, and can also inspect the driving equipment with bad incoming materials.
The application also provides an inspection system, which comprises a to-be-inspected driving device 10, a motor 30 and a power supply device 20, wherein the to-be-inspected driving device 10 is respectively connected with the motor 30 and the power supply device 20, and the to-be-inspected driving device 10 is used for executing the above inspection method.
The quality of the driving equipment 10 to be tested is tested by a method of controlling the output of the fixed current through the test program, and when the slope is smaller than the slope threshold value, the driving equipment 10 to be tested passes the test, which shows that the thermal resistance between the driving equipment 10 to be tested and the radiator is qualified, and the reliability of the product is high; when the slope is greater than or equal to the slope threshold, the driving device 10 to be tested does not pass the test, which shows that the thermal resistance between the driving device 10 to be tested and the radiator is too large, the reliable operation cannot be realized, and the product is unqualified; the inspection method avoids inaccurate inspection results through manual inspection in the prior art, can quickly and efficiently judge whether the driving equipment 10 to be inspected is qualified or not, and ensures the production yield and reliability of the driving equipment 10 to be inspected. Secondly, converting the fixed current into a first shaft and a second shaft which are vertical to each other through a test program; based on the fact that the control reference of the first shaft is larger than that of the second shaft, fixed current is output to the motor 30, and an accumulated angle value of the motor 30 is obtained, so that the motor 30 rotates under the condition of no load, the fact that the driving device outputs a fixed effective current value is guaranteed, detection time is shortened, and detection efficiency is improved. In addition, the slope of the temperature rise of the driving device is calculated in multiple stages and is compared with the preset value of each stage, so that whether the temperature rise of the driving device is too fast or not can be judged more accurately, and whether the quality problem exists or not can be determined.
It should be noted that, various optional implementations described in the embodiments of the present application may be implemented in combination with each other or implemented separately, and the embodiments of the present application are not limited thereto.
In the description of the present application, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, and a specific orientation configuration and operation. Therefore, no limitation to the present application is to be understood. Furthermore, "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate a number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through two or more elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The embodiments described above are described with reference to the drawings, and various other forms and embodiments are possible without departing from the principles of the present application, which is therefore not to be construed as limiting the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. In the drawings, the size and relative sizes of components may be exaggerated for clarity. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. The terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, components, and/or components, but do not preclude the presence or addition of one or more other features, integers, components, and/or groups thereof. Unless otherwise indicated, numerical ranges include the upper and lower limits of the ranges and any subranges therebetween.
The above description is only a part of the embodiments of the present application, and not intended to limit the scope of the present application, and all equivalent devices or equivalent processes performed by the content of the present application and the attached drawings, or directly or indirectly applied to other related technical fields, are also included in the scope of the present application.
Claims (10)
1. An inspection method, applied to a driving device to be inspected, the driving device to be inspected being respectively connected to a motor and a power supply device, the inspection method comprising:
burning a preset test program into the driving equipment to be tested;
when the power supply equipment supplies power to the driving equipment to be tested, the testing program is operated through the driving equipment to be tested, so that the driving equipment to be tested outputs a plurality of fixed currents to the motor;
when the driving equipment to be tested outputs the fixed current to the motor, acquiring temperature information of the driving equipment to be tested according to preset interval time to obtain at least two pieces of temperature information corresponding to the fixed current;
calculating at least two pieces of temperature information to obtain a slope corresponding to the fixed current;
and in response to the slope being smaller than a slope threshold, determining that the driving equipment to be tested passes the inspection.
2. The inspection method according to claim 1, wherein the step of the driving device under test outputting the fixed current to the motor includes:
converting the fixed current to a first axis and a second axis perpendicular to each other by the test program;
and outputting the fixed current to the motor based on the control reference of the first shaft and the control reference of the second shaft so that the motor rotates at the set fixed effective current under the condition of no load.
3. The inspection method according to claim 2, wherein the step of outputting the fixed current to the motor based on the control reference of the first shaft and the control reference of the second shaft includes:
setting the control reference of the first shaft to a first fixed value and the control reference of the second shaft to a second fixed value, wherein the first fixed value is larger than the second fixed value;
and acquiring an accumulated angle value of the motor through the test program.
4. The inspection method according to claim 3, wherein a ratio of the fixed current to a rated current of the driving device under test is in a range of 0.5 to 8.
5. The method of any one of claims 1 to 4, wherein the step of calculating at least two of the temperature information to obtain a slope corresponding to the fixed current comprises:
dividing at least two pieces of temperature information into a plurality of stages through the test program;
calculating all temperature information in each stage to obtain a slope corresponding to the stage;
and comparing the slope corresponding to each stage with the slope threshold value to judge whether the driving equipment to be tested passes the inspection.
6. The method of claim 5, wherein after the step of obtaining at least two temperature information corresponding to the fixed current, the method of testing further comprises:
detecting all temperature information through the test program;
and in response to all the temperature information having abnormal temperature information, controlling the drive equipment to be tested to rerun the test program.
7. The method of claim 6, wherein the step of detecting all temperature information by the test program comprises:
comparing all the temperature information according to the acquisition time;
responding to the longer acquisition time, the larger the temperature value of the temperature information is, and all the temperature information does not have the abnormal temperature information.
8. The inspection method according to any one of claims 1 to 4, wherein the test program is a preset independent program, a partial program in the driver device under test, or an inspection item program in the driver device under test.
9. The inspection method according to any one of claims 1 to 4, further comprising:
and in response to the slope being greater than or equal to the slope threshold, determining that the driving device to be tested does not pass the test.
10. An inspection system comprising a drive device under test, a motor and a power supply device, the drive device under test being connected to the motor and the power supply device, respectively, the drive device under test being configured to perform the inspection method of any one of claims 1 to 9.
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| CN202310106910.7A CN115932457A (en) | 2023-02-10 | 2023-02-10 | Inspection method and system |
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