A method for measuring power of an automobile AGS motor

Abstract

This invention relates to a dynamometer testing method for automotive AGS motors, comprising the following steps: S1, connecting the equipment hardware; S2, turning on the equipment; S3, setting process parameters on the host computer's testing software; S4, defining a temporary data storage area and loading torque in the host computer's testing software system; S5, manually defining sample numbers in the host computer's testing software system; S6, starting the test: the AGS motor starts its continuous self-test function; S7, collecting torque, speed, voltage, and current data for one self-test process of the AGS motor; S8, determining whether the speed data is within the set speed range φ. If so, the data is stored, and then the torque loaded by the hysteresis dynamometer is changed to T=T+ΔT, and then returning to step S7; otherwise, the continuous self-test function of the AGS motor is stopped, and step S9 is executed; S9, exporting the data. This invention enables fully automatic one-click testing and can obtain data efficiently and accurately.

Description

Technical Field

[0001] This invention relates to the field of motor dynamometer systems, and more specifically, to a dynamometer method for automotive AGS motors. Background Technology

[0002] With the strict enforcement of national environmental protection requirements, major automakers must strictly control the carbon emissions of their vehicles. Common practices include: A. weight reduction; B. reducing rolling resistance; C. improving aerodynamic performance; D. developing electric vehicles, etc. Active grille shutters (AGS) are an important component for improving aerodynamic performance and participate in the thermal management of electric vehicle battery packs, increasing the cruising range of electric vehicles. Currently, they are increasingly widely used in various models, especially electric vehicles. As the power component of the active grille shutter (AGS), the magnitude of the output torque, the speed, and the stability of the output power of the AGS motor directly affect whether the active grille shutter (AGS) can open and close stably during vehicle operation. Therefore, researching how to accurately measure the maximum torque and current that the AGS motor can output at rated speed, and other important motor performance data, is crucial for the development of active grille shutters.

[0003] Because AGS motors operate differently from traditional motors—traditional motors can rotate continuously in one direction according to a set program—AGS motors rotate clockwise for 5-7 seconds, pause for 1-2 seconds, then rotate counterclockwise for 5-7 seconds, repeating this cycle. Due to this difference in operating method, existing motor dynamometers cannot be used for AGS motor dynamometer testing. Current industry methods for AGS motor dynamometer testing involve manually adjusting the hysteresis load and reading the torque sensor reading. This method is inefficient and prone to human error, failing to efficiently and accurately obtain crucial motor performance data such as the maximum torque and current output at rated speed, which hinders AGS motor development. Summary of the Invention

[0004] To address the aforementioned technical problems, the present invention aims to provide a dynamometer method for automotive AGS motors, which can efficiently and accurately collect data automatically.

[0005] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: A dynamometer testing method for automotive AGS motors, employing a dynamometer testing system, includes a dynamometer device, a host computer, a dynamometer controller, a data acquisition instrument, and an adjustable DC regulated power supply. The dynamometer device includes a hysteresis dynamometer, and the method comprises the following steps: S1. Fix the AGS motor on the dynamometer and connect it to the hysteresis dynamometer. S2. Then turn on the dynamometer controller, data acquisition instrument, adjustable DC regulated power supply and host computer respectively; S3. Open the test software on the host computer and set the process parameters in the test software. The process parameters include the initial loading torque T1 of the hysteresis dynamometer, the incremental torque ΔT, the speed range φ of the AGS motor, and the test voltage V. S4. Define temporary data storage areas data1 and data2 in the test software system on the host computer, apply torque T=T1, and clear the temporary data storage areas data1 and data2 to zero. S5. Manually define the sample number xxx in the host computer's testing software system; S6. Start-up test: The AGS motor starts the continuous self-test function, rotating clockwise and counterclockwise for 6 seconds each; S7. Collect the torque, speed, voltage, and current data of the AGS motor during one self-test process, and store the data in data1; S8. Determine whether the speed data of data1 is within the set speed range φ. If so, store data1 in data2, then change the torque applied by the hysteresis dynamometer to T=T+ΔT, and then return to step S7. Otherwise, stop the continuous self-test function of the AGS motor and proceed to step S9. S9. Generate the data2 data into an Excel file. The system will name the Excel file "sample number xxx" and automatically output the Excel file to the specified folder. S10. The system determines whether to end the test. If not, it returns to step S4; otherwise, it stops running.

[0006] As a preferred embodiment: the hysteresis dynamometer is connected to the AGS motor and provides a rotating mechanical load for the AGS motor; the adjustable DC regulated power supply is electrically connected to the AGS motor and provides regulated DC power to the AGS motor; the dynamometer controller is electrically connected to the hysteresis dynamometer and is used for setting the torque value of the hysteresis dynamometer and acquiring torque / speed signals; the data acquisition instrument is electrically connected to the AGS motor and is used for acquiring the current and voltage signals of the AGS motor; the host computer is electrically connected to the dynamometer controller and the data acquisition instrument, and analyzes and processes the acquired data.

[0007] As a preferred embodiment: the dynamometer device further includes a base and a sample fixing plate. The hysteresis dynamometer is fixed at one end of the base, and the sample fixing plate is slidably mounted at the other end of the base via a guide rail. The sample fixing plate is also provided with a sample clamp for fixing the sample to be tested.

[0008] As a preferred embodiment: two guide rails are fixed at intervals at the other end of the base, the cross-section of the sample fixing plate is L-shaped, and the bottom is slidably connected to the guide rails through two sliders.

[0009] As a preferred embodiment, triangular reinforcing plates are also provided on both sides of the sample fixing plate.

[0010] As a preferred embodiment: the output shaft of the hysteresis dynamometer is connected to a coupling via a splined connection shaft, and the other end of the coupling is also connected to the output shaft of the sample to be tested.

[0011] As a preferred embodiment, the base is also provided with handrails on both sides for easy gripping.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: The method of this invention loads the AGS motor with a hysteresis dynamometer and, in conjunction with a host computer, dynamometer controller, data acquisition instrument, and other devices, can realize a fully automatic one-click testing function. It can efficiently and accurately measure important motor performance data such as the maximum torque and current that the AGS motor can output at rated speed, meeting the dynamometer requirements in the development of automotive AGS motors. Attached Figure Description

[0013] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute a limitation thereof.

[0014] Figure 1 This is a schematic diagram of the overall structure of the dynamometer system of the present invention; Figure 2 This is a top view schematic diagram of the dynamometer device of the present invention; Figure 3 This is a schematic diagram of the method flow of the present invention.

[0015] The attached figures are labeled as follows: 1. Hysteresis dynamometer; 2. Sample fixing plate; 3. Host computer; 4. dynamometer controller; 5. Data acquisition instrument; 6. Adjustable DC regulated power supply; 7. Base; 8. Sample mounting fixture; 9. AGS motor; 10. Guide rail; 11. Coupling; 12. Splined connecting shaft. Detailed Implementation

[0016] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0017] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0018] Furthermore, in the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of 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 this invention, unless otherwise stated, "a plurality of" means two or more, unless explicitly defined otherwise.

[0020] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0021] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments: like Figure 3 The method shown is for dynamometer testing of an automotive AGS motor. The dynamometer testing system includes a dynamometer device, a host computer 3, a dynamometer controller 4, a data acquisition instrument 5, and an adjustable DC regulated power supply 6. The dynamometer device includes a hysteresis dynamometer 1, and the method comprises the following steps: S1. Fix the AGS motor 9 on the dynamometer and connect it to the hysteresis dynamometer 1; S2. Then turn on the dynamometer controller 4, data acquisition instrument 5, adjustable DC regulated power supply 6 and host computer 3 respectively. S3. Open the test software on the host computer 3 and set the process parameters on the test software. The process parameters include the initial loading torque T1 of the hysteresis dynamometer 1, the incremental torque ΔT, the speed range φ of the AGS motor 9, and the test voltage V. S4. Define temporary data storage areas data1 and data2 in the test software system on the host computer 3, apply torque T=T1, and clear the temporary data storage areas data1 and data2 to zero. S5. Manually define the sample number xxx in the testing software system of the host computer 3; S6. Start-up test: The AGS motor starts the continuous self-test function, rotating clockwise and counterclockwise for 6 seconds each; S7. Collect torque, speed, voltage, and current data of AGS motor 9 during a self-test process and store the data in data1; S8. Determine whether the speed data of data1 is within the set speed range φ. If so, store data1 in data2, then change the torque applied by the hysteresis dynamometer 1 to T=T+ΔT, and then return to execute step S7; otherwise, stop the continuous self-test function of AGS motor 9 and execute step S9. S9. Generate the data2 data into an Excel file. The system will name the Excel file "sample number xxx" and automatically output the Excel file to the specified folder. S10. The system determines whether to end the test. If not, it returns to step S4; otherwise, it stops running.

[0023] like Figure 1 and Figure 2As shown, the hysteresis dynamometer 1 is connected to the AGS motor 9 and provides a rotating mechanical load for the AGS motor 9. The adjustable DC regulated power supply 4 is electrically connected to the AGS motor 9 and provides regulated DC power to the AGS motor 9. The dynamometer controller 4 is electrically connected to the hysteresis dynamometer 1 and is used for setting the torque value of the hysteresis dynamometer 1 and acquiring torque / speed signals. The data acquisition instrument 5 is electrically connected to the AGS motor 9 and is used for acquiring current and voltage signals of the AGS motor 9. The host computer 3 is electrically connected to the dynamometer controller 4 and the data acquisition instrument 5, and analyzes and processes the acquired data. The host computer provides a human-machine interface and has AGS motor dynamometer system control software, providing data acquisition / analysis / processing algorithms for the AGS motor dynamometer system.

[0024] The dynamometer device also includes a base 7 and a sample fixing plate 2. The hysteresis dynamometer 1 is fixed at one end of the base 7, and the sample fixing plate 2 is slidably mounted at the other end of the base via a guide rail 10. The sample fixing plate 2 is also provided with a sample clamp 8 for fixing the sample 9 to be tested.

[0025] Two guide rails 10 are fixed at intervals at the other end of the base 7. The sample fixing plate 2 has an L-shaped cross-section, and its bottom is slidably connected to the guide rails 10 via two sliders. Triangular reinforcing plates are also provided on both sides of the sample fixing plate 2. Handrails for easy gripping are also provided on both sides of the base 7.

[0026] The output shaft of the hysteresis dynamometer 1 is connected to a coupling 11 via a splined connecting shaft 12, and the other end of the coupling 11 is also connected to the output shaft of the sample 9 to be tested.

[0027] When testing the dynamometer of an automotive AGS motor using the dynamometer device of this invention, the AGS motor is first fixed to the sample fixing plate using a sample fixture. Then, by moving the sample fixing plate on the guide rail, the output shaft of the AGS motor is axially connected to the output shaft of the hysteresis dynamometer via a coupling and a spline connection. Next, the dynamometer controller, data acquisition instrument, adjustable DC regulated power supply, and host computer are turned on respectively. The test software is then opened on the host computer, and process parameters are set in the test software. These process parameters include the initial loading torque T1, the incremental torque ΔT, the speed range φ, and the test voltage V. After that, the test is started. The method of this invention can test the dynamometer of the AGS motor under its unique operating mode and directly measure the maximum torque data, current, and other important motor performance data that the AGS motor can achieve at its rated speed through a one-button operation.

[0028] This invention utilizes a hysteresis dynamometer to load an AGS motor, saving the need for a torque sensor while accurately acquiring the motor's torque and speed data. This provides accurate measured data for subsequent proprietary dynamometer testing methods for AGS motors. The proprietary dynamometer testing method of this invention is based on torque, speed, current, and voltage data collected by a hysteresis dynamometer and a data acquisition instrument. Through this method, important motor performance data such as the maximum torque and current that the AGS motor can output at its rated speed can be obtained.

[0029] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0030] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A dynamometer method for automotive AGS motors, characterized in that: The dynamometer is tested using a dynamometer system, which includes a dynamometer device, a host computer (3), a dynamometer controller (4), a data acquisition instrument (5), and an adjustable DC regulated power supply (6). The dynamometer device includes a hysteresis dynamometer (1), a base (7), and a sample fixing plate (2). The hysteresis dynamometer (1) is fixed at one end of the base (7), and the sample fixing plate (2) is slidably mounted at the other end of the base via a guide rail (10). The sample fixing plate (2) is also provided with a sample clamp (8) for fixing the sample to be tested (9). The output shaft of the hysteresis dynamometer (1) is connected to a coupling (11) via a spline connecting shaft (12), and the other end of the coupling (11) is also connected to the output shaft of the sample to be tested (9). The test includes the following steps: S1. Fix the AGS motor (9) on the dynamometer and connect it to the hysteresis dynamometer (1); S2. Then turn on the dynamometer controller (4), data acquisition instrument (5), adjustable DC regulated power supply (6) and host computer (3) respectively. S3. Open the test software on the host computer (3) and set the process parameters on the test software. The process parameters include the initial loading torque T1 of the hysteresis dynamometer (1), the incremental torque ΔT, the speed range φ of the AGS motor (9), and the test voltage V. S4. Define temporary data storage areas data1 and data2 in the test software system on the host computer (3), load torque T=T1, and clear temporary data storage areas data1 and data2 to zero. S5. Manually define the sample number xxx in the testing software system of the host computer (3); S6. Start-up test: The AGS motor starts the continuous self-test function, rotating clockwise and counterclockwise for 6 seconds each; S7. Collect the torque, speed, voltage and current data of AGS motor (9) during a self-test process and store the data in data1; S8. Determine whether the speed data of data1 is within the set speed range φ. If so, store data1 in data2, then change the torque of the hysteresis dynamometer (1) to T=T+ΔT, and then return to execute step S7; otherwise, stop the continuous self-test function of the AGS motor (9) and execute step S9. S9. Generate the data2 data into an Excel file. The system will name the Excel file "sample number xxx" and automatically output the Excel file to the specified folder. S10. The system determines whether to end the test. If not, it returns to step S4; otherwise, it stops running. The hysteresis dynamometer (1) is connected to the AGS motor (9) and provides a rotating mechanical load for the AGS motor (9). The adjustable DC regulated power supply (4) is electrically connected to the AGS motor (9) and provides regulated DC power for the AGS motor (9). The dynamometer controller (4) is electrically connected to the hysteresis dynamometer (1) and is used for setting the torque value of the hysteresis dynamometer (1) and acquiring torque / speed signals. The data acquisition instrument (5) is electrically connected to the AGS motor (9) and is used for acquiring current and voltage signals of the AGS motor (9). The host computer (3) is electrically connected to the dynamometer controller (4) and the data acquisition instrument (5) and analyzes and processes the acquired data.

2. The dynamometer method for an automotive AGS motor according to claim 1, characterized in that: Two guide rails (10) are fixed at intervals at the other end of the base (7). The cross section of the sample fixing plate (2) is L-shaped, and the bottom is slidably connected to the guide rails (10) by two sliders.

3. The dynamometer method for an automotive AGS motor according to claim 2, characterized in that: The sample fixing plate (2) is also provided with triangular reinforcing plates on both sides.

4. The dynamometer method for an automotive AGS motor according to claim 1, characterized in that: The base (7) is also provided with handrails on both sides for easy gripping.

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