Limited angle torque motor current-angle characteristic automatic testing device

Abstract

The utility model discloses a limited angle torque motor current-angle characteristic automatic testing device, which belongs to the field of motor testing and comprises a limited angle torque motor, a coupling, a dummy shaft, an encoder, a first mounting plate, a second mounting plate, a programmable power supply and terminal equipment. The limited angle torque motor is mounted on the first mounting plate, the output end of the limited angle torque motor is connected with the coupler, the encoder is mounted on the second mounting plate, the dummy shaft is mounted on the encoder, the encoder is connected with the output end of the coupler through the dummy shaft, the encoder is connected with the terminal equipment, and the programmable power supply is connected with the limited angle torque motor. The utility model can solve the problem of low test efficiency in the prior art.

Description

Technical Field

[0001] The utility model belongs to the field of motor testing, and in particular relates to an automatic testing device for current-angle characteristics of a limited-angle torque motor. Background Art

[0002] As a key power component, limited-angle torque motors are widely used in cutting-edge defense fields such as radar, missile launch systems, aerospace, etc. Their performance is directly related to the stability and combat effectiveness of the entire system.

[0003] Currently, the current-angle characteristics of limited-angle torque motors are tested manually. This method has many drawbacks. First, the testing process is cumbersome and time-consuming. From motor installation and wiring to data recording, every step requires manual intervention, resulting in low test efficiency. Second, errors can occur during installation and recording, leading to large variations and difficulty ensuring the consistency of test data, affecting the accuracy and reliability of test results. Furthermore, manual calculation of large amounts of data can extend the motor testing cycle. Therefore, to meet the defense and military needs for mass production of weapons and equipment and high-performance testing, there is an urgent need to improve the testing efficiency of limited-angle torque motors. Utility Model Content

[0004] The purpose of the utility model is to provide an automatic test device for the current-angle characteristics of a limited-angle torque motor, so as to solve the problem of low test efficiency in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An automatic test device for current-angle characteristics of a limited-angle torque motor, comprising: a limited-angle torque motor, a coupling, a dummy shaft, an encoder, a first mounting plate, a second mounting plate, a programmable power supply, and a terminal device;

[0007] The limited angle torque motor is installed on the first mounting plate, the output end of the limited angle torque motor is connected to the coupling, the encoder is installed on the second mounting plate, the dummy shaft is installed on the encoder, the encoder is connected to the output end of the coupling through the dummy shaft, the encoder is connected to the terminal device, and the programmable power supply is connected to the limited angle torque motor. When in use, the programmable power supply applies different currents to the limited angle torque motor, the limited angle torque motor starts to rotate and drives the encoder to rotate through the coupling. The encoder measures the rotation angle data of the limited angle torque motor corresponding to different currents and inputs it into the terminal device to complete the current corresponding angle characteristic test.

[0008] In some embodiments, a base is further included, and the first mounting plate and the second mounting plate are disposed on the base.

[0009] In some embodiments, the first mounting plate and the second mounting plate are vertically mounted on the base, and the verticality of the first mounting plate and the second mounting plate are equal.

[0010] In some embodiments, the invention further includes: a first bottom plate and a second bottom plate, wherein the first mounting plate is mounted on the base via the first bottom plate, and the second mounting plate is mounted on the base via the second bottom plate.

[0011] In some embodiments, grooves are provided on the first bottom plate, the second bottom plate and the base, the first mounting plate is installed in the groove of the first bottom plate, the second mounting plate is installed in the groove of the second bottom plate, and the first bottom plate and the second bottom plate are installed in the groove of the base.

[0012] In some implementations, a power analyzer and a printer are further included, and the power analyzer and the printer are connected to the terminal device.

[0013] In some embodiments, the programmable power supply is connected to a terminal device, and when in use, the terminal device controls the programmable power supply to provide different currents to the limited angle torque motor.

[0014] In some embodiments, the encoder and the limited angle torque motor are of equal coaxiality.

[0015] In some embodiments, a coupling is disposed between the first mounting plate and the second mounting plate.

[0016] In some embodiments, the limited angle torque motor, the coupling, and the encoder are installed in a direction perpendicular to the installation direction of the first mounting plate and the second mounting plate.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The utility model provides an automatic test device for the current-angle characteristics of a limited-angle torque motor, characterized by comprising: a limited-angle torque motor, a coupling, a dummy shaft, an encoder, a first mounting plate, a second mounting plate, a programmable power supply, and a terminal device; the limited-angle torque motor is mounted on the first mounting plate, the output end of the limited-angle torque motor is connected to the coupling, the encoder is mounted on the second mounting plate, the dummy shaft is mounted on the encoder, the encoder is connected to the output end of the coupling via the dummy shaft, the encoder is connected to the terminal device, and the programmable power supply is connected to the limited-angle torque motor. The utility model, through the cooperation between the terminal device, the programmable power supply, and the encoder, can realize automated testing of the angular characteristics of the limited-angle torque motor under different current inputs, greatly reducing the complexity and error of manual operations and improving testing efficiency and accuracy. In addition, the use of the encoder can accurately measure the rotation angle of the limited-angle torque motor under different currents, accurately reflecting the current-angle characteristics of the limited-angle torque motor.

[0019] Furthermore, the utility model designs a base, a first mounting plate and a second mounting plate, and vertically mounts the first mounting plate and the second mounting plate on the base, thereby ensuring the coaxiality and stability of the limited angle torque motor, coupling and encoder during the test, and reducing measurement errors caused by vibration or offset.

[0020] Furthermore, the present invention provides grooves on the first base plate, the second base plate and the base to avoid the problem of deviation in the shaft tension test data caused by the left and right movement of the test device when replacing the limited angle torque motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of the automatic testing device for current-angle characteristics of a limited-angle torque motor provided in this embodiment;

[0022] Figure 2 A schematic diagram of the connection of the terminal device provided in this embodiment;

[0023] Figure 3 This is a diagram of the human-computer interaction interface of the test software provided in this embodiment.

[0024] In the figure, 1. Limited angle torque motor; 2. Coupling; 3. Dummy shaft; 4. Encoder; 5. First mounting plate; 6. Second mounting plate; 7. Base. DETAILED DESCRIPTION

[0025] Hereinafter, only certain exemplary embodiments are briefly described, and the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are to be regarded as illustrative rather than restrictive in nature.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operate in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0027] 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 technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0028] In this utility model, unless otherwise specified or limited, the terms "install," "connect," "connected," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0029] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0030] like Figure 1 As shown, this embodiment provides an automatic test device for current-angle characteristics of a limited-angle torque motor, characterized by comprising: a limited-angle torque motor 1, a coupling 2, a dummy shaft 3, an encoder 4, a first mounting plate 5, a second mounting plate 6, a base 7, a programmable power supply, and a terminal device;

[0031] The limited angle torque motor 1 is installed on the first mounting plate 5, the output end of the limited angle torque motor 1 is connected to the coupling 2, the encoder 4 is installed on the second mounting plate 6, the dummy shaft 3 is installed on the encoder 4, the encoder 4 is connected to the output end of the coupling 2 through the dummy shaft 3, the encoder 4 is connected to the terminal device, and the programmable power supply is connected to the limited angle torque motor 1. When in use, the programmable power supply applies different currents to the limited angle torque motor 1, the limited angle torque motor 1 starts to rotate and drives the encoder 4 to rotate through the coupling 2. The encoder 4 measures the rotation angle data of the limited angle torque motor 1 corresponding to different currents and inputs it into the terminal device to complete the current corresponding angle characteristic test.

[0032] Specifically, the first mounting plate 5 and the second mounting plate 6 are disposed on the base 7 . The first mounting plate 5 and the second mounting plate 6 are vertically mounted on the base 7 , and the verticality of the first mounting plate 5 and the second mounting plate 6 are equal.

[0033] Specifically, the device further comprises: a first bottom plate and a second bottom plate, wherein the first mounting plate 5 is mounted on the base 7 via the first bottom plate, and the second mounting plate 6 is mounted on the base 7 via the second bottom plate. Grooves are provided on the first bottom plate, the second bottom plate, and the base 7, and the first mounting plate 5 is mounted in the groove of the first bottom plate, the second mounting plate 6 is mounted in the groove of the second bottom plate, and the first and second bottom plates are mounted in the grooves of the base 7.

[0034] Grooves are provided on the first base plate, the second base plate and the base 7 to ensure the horizontal installation of the various components of the device. Locking the first base plate and the second base plate can ensure the coaxiality of the encoder 4 and the limited angle torque motor 1, preventing the limited angle torque motor 1 from stalling due to installation deviation and causing deviation in the test data.

[0035] The device also includes a power analyzer and a printer, which are connected to the terminal device. The programmable power supply is connected to the terminal device. When in use, the terminal device controls the programmable power supply to provide different currents to the limited angle torque motor. The terminal device is a computer.

[0036] The encoder 4 and the limited angle torque motor 1 are coaxially aligned. The coupling 2 is disposed between the first mounting plate 5 and the second mounting plate 6. The limited angle torque motor 1, coupling 2, and encoder 4 are mounted perpendicular to the mounting direction of the first mounting plate 5 and the second mounting plate 6.

[0037] The device testing principle provided in this embodiment involves programming the host computer software using LabVIEW, and writing a test program based on the current-angle characteristics test requirements for a limited-angle torque motor. The host computer software controls a programmable power supply to apply current to the limited-angle torque motor. The motor shaft rotates, driving the encoder shaft through a coupling. The encoder outputs pulses that are fed back to the host computer software, which automatically converts them into deflection angles. After the test program completes, an Excel spreadsheet is automatically generated based on the current-angle test requirements for the limited-angle torque motor. Data is automatically processed and compared to the test requirements, and the test data and results for the limited-angle torque motor current-angle characteristics are output.

[0038] The specific test methods are as follows:

[0039] (1) Use LabVIEW to create a host computer software, the software programming interface is as follows Figure 3 As shown, it is divided into manual mode and automatic mode: the manual mode is convenient for the installation and debugging of the limited angle torque motor 1; the automatic mode designs the test path according to the specific test requirements, completes the automatic test, automatically samples and extracts data, automatically calculates the data, and prints the records.

[0040] (2) If Figure 2As shown, the programmable power supply, power analyzer, encoder 4, and printer are connected to the computer via the RS232 interface to achieve data transmission and data collection.

[0041] (3) Set up the upper computer software. The programmable power supply applies 0mA, 50mA, 100mA, 150mA, 200mA, 250mA, 200mA, 150mA, 100mA, 50mA, and 0mA to the limited angle torque motor 1. The encoder 4 outputs pulses at the corresponding current points and feeds them back to the upper computer software. The industrial computer automatically converts them into angles. Data is collected after each current point stabilizes for 5S. This is defined as one cycle. The second and third cycles are then performed, for a total of three cycles. Save the data after the test is completed.

[0042] (4) Data processing: The average value of the zero position returned by the second and third cycles is used as the reference zero position. The difference between the angle values ​​under different currents in the three cycles minus the reference zero position is calculated, which is the rotation angle of the limited angle torque motor 1. Among them, 0mA, 100mA, and 250mA in the three cycles meet the requirements of Table 1.

[0043] Table 1 The range of the angle value corresponding to the current

[0044]

[0045] The dummy shaft 3 is screwed to the encoder 4. The encoder 4 is provided with mounting holes and screwed to the second mounting plate 6. A flexible coupling 2 is used, and the coupling 2 is mounted on the encoder 4. The solidified test device, consisting of the first mounting plate 5, the second mounting plate 6, the coupling 2, and the encoder 4, reduces the number of items that the operator needs to perform and install, ensuring the stability of the test device's test state and the reproducibility of the test data. Each test only requires replacing the limited-angle torque motor 1 required for the test.

[0046] Specifically, before the test, the limited-angle torque motor 1 is not powered on. The limited-angle torque motor is adjusted to zero according to the zero mark and installed on the first mounting plate 5. The host computer is turned on and the current-angle characteristic test program of the corresponding motor model is retrieved. The automatic test is clicked. The host computer controls the programmable power supply to apply current to the limited-angle torque motor. At 0mA, the encoder is cleared; a current of 50mA is applied to the motor, and after waiting for 5 seconds, the encoder pulse count is taken, which the host computer automatically converts into an angle and records; a current of 100mA is applied to the motor, and after waiting for 5 seconds, the encoder pulse count is taken, which the host computer automatically converts into an angle and records; according to the above steps, the encoder angle values ​​under currents of 150mA, 200mA, 250mA, 200mA, 150mA, 100mA, 50mA, and 0mA are measured in sequence. This is defined as one cycle, and the second and third cycles are then performed in this manner (a total of 3 reciprocating cycles). After the test is completed, the test data is saved.

[0047] The original testing method involved connecting a limited-angle torque motor to an automatic control unit via a rotating shaft. The tester manually applied current, recording the output angle of the automatic control unit at each current point. For 30 test points, a calculator calculated the motor's 30 rotation angles. This method was cumbersome and time-consuming. However, the automatic current-angle characteristic testing device for limited-angle torque motors provided in this embodiment allows for a single-button test, resulting in convenient and efficient operation.

[0048] In addition, a simple bracket support was used during the original test to ensure verticality. However, due to the continuous disassembly of the motor, the bracket easily moved left and right, causing the shaft to be strained, which led to deviations in the test data. In the automatic testing device provided in this embodiment, grooves are provided on the first base plate, the second base plate, and the base 7. The first mounting plate 5 is installed in the groove of the first base plate, and the second mounting plate 6 is installed in the groove of the second base plate. The first base plate and the second base plate are installed in the groove of the base 7, which can ensure that the device will not move left and right when the motor is disassembled. The device provided in this embodiment can be used for mass production of motors, is simple to operate, easy to install, has high test accuracy, short test time, and high efficiency, and can be used for testing the current-angle characteristics of various types of limited-angle torque motors.

[0049] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the embodiments disclosed above are merely illustrative in all respects and are not exclusive. All modifications within the scope of the present invention or equivalent to the scope of the present invention are included in the present invention.

Claims

1. An automatic test device for current-angle characteristics of a limited-angle torque motor, characterized in that: include: A limited angle torque motor (1), a coupling (2), a dummy shaft (3), an encoder (4), a first mounting plate (5), a second mounting plate (6), a programmable power supply, and a terminal device; The limited-angle torque motor (1) is mounted on a first mounting plate (5), the output end of the limited-angle torque motor (1) is connected to a coupling (2), the encoder (4) is mounted on a second mounting plate (6), the dummy shaft (3) is mounted on the encoder (4), the encoder (4) is connected to the output end of the coupling (2) via the dummy shaft (3), the encoder (4) is connected to the terminal device, and the program-controlled power supply is connected to the limited-angle torque motor (1).

2. The automatic testing device for current-angle characteristics of a limited angle torque motor according to claim 1, characterized in that: It also includes a base (7), on which the first mounting plate (5) and the second mounting plate (6) are arranged.

3. The automatic testing device for current-angle characteristics of a limited angle torque motor according to claim 2, characterized in that: The first mounting plate (5) and the second mounting plate (6) are vertically mounted on the base (7), and the verticality of the first mounting plate (5) and the second mounting plate (6) are equal.

4. The automatic testing device for current-angle characteristics of a limited angle torque motor according to claim 2, characterized in that: Also includes: A first bottom plate and a second bottom plate, wherein the first mounting plate (5) is mounted on the base (7) via the first bottom plate, and the second mounting plate (6) is mounted on the base (7) via the second bottom plate.

5. The automatic testing device for current-angle characteristics of a limited angle torque motor according to claim 4, characterized in that: Grooves are provided on the first bottom plate, the second bottom plate and the base (7); the first mounting plate (5) is mounted in the groove of the first bottom plate; the second mounting plate (6) is mounted in the groove of the second bottom plate; and the first bottom plate and the second bottom plate are mounted in the groove of the base (7).

6. The automatic testing device for current-angle characteristics of a limited angle torque motor according to claim 1, characterized in that: It also includes a power analyzer and a printer, which are connected to the terminal device.

7. The automatic testing device for current-angle characteristics of a limited angle torque motor according to claim 1, characterized in that: The programmable power supply is connected to a terminal device.

8. The automatic testing device for current-angle characteristics of a limited angle torque motor according to claim 1, characterized in that: The encoder (4) and the limited angle torque motor (1) have equal coaxiality.

9. The automatic testing device for current-angle characteristics of a limited angle torque motor according to claim 1, characterized in that: The coupling (2) is arranged between the first mounting plate (5) and the second mounting plate (6).

10. The automatic testing device for current-angle characteristics of a limited angle torque motor according to claim 1, characterized in that: The installation direction of the limited-angle torque motor (1), the coupling (2), and the encoder (4) is perpendicular to the installation direction of the first mounting plate (5) and the second mounting plate (6).

Images