Motor tester and system therefor

Abstract

The utility model discloses a motor tester and system thereof relates to motor performance test technical field, wherein, motor tester includes core, controllable load, torsion axle and position detection subassembly, the core includes transmission assembly, and transmission assembly has transmission end and is used for connecting the test calibration end of the motor of measurement, controllable load is used for providing preset load torque, torsion axle is driven connection with controllable load of transmission end, position detection subassembly includes position feedback spare and with position feedback spare connection's position detection spare, and position feedback spare is driven connection with transmission assembly, and position detection spare is used for detecting the rotation position or moving position of position feedback spare, to obtain the rotation angle of motor of measurement, the utility model provides technical scheme can promote motor rotation angle measurement's precision and ability.

Description

Technical Field

[0001] This utility model relates to the field of motor performance testing technology, and in particular to a motor tester and its system. Background Technology

[0002] Existing motor testing methods have technical limitations, as they cannot accurately acquire and record the actual rotation angle during motor rotation, making it difficult to effectively monitor and analyze its rotational characteristics. Utility Model Content

[0003] The main purpose of this invention is to propose a motor tester and system, which aims to improve the accuracy and capability of motor rotation angle measurement.

[0004] To achieve the above objectives, the motor tester proposed in this utility model includes:

[0005] The mechanism includes a transmission assembly having a transmission end and a test calibration end for connecting the motor under test;

[0006] A controllable load component used to provide a preset load torque;

[0007] A torsion shaft connects the transmission end to the controllable load component.

[0008] A position detection component includes a position feedback element and a position detection element connected to the position feedback element. The position feedback element is connected to the transmission component. The position detection element is used to detect the rotational or movement position of the position feedback element in order to obtain the rotation angle of the motor under test.

[0009] In one embodiment, the transmission assembly includes an input shaft, a first gear shaft, a first gear, and a second gear. The input shaft is the test calibration end, the first gear shaft is the transmission end, the first gear is sleeved on the input shaft, and the second gear is sleeved on the first gear shaft and meshes with the first gear. The mechanism also includes a first housing, which has a receiving cavity and a first opening and a second opening communicating with the receiving cavity. The transmission assembly is disposed in the receiving cavity, the first opening and the second opening are opposite to each other, the test calibration end extends out of the first housing through the first opening, and the transmission end extends out of the first housing through the second opening and is connected to the torque shaft.

[0010] In one embodiment, the position detection component further includes a second gear shaft, a third gear, and a fourth gear. The second gear shaft, the third gear, the fourth gear, the position feedback element, and the position detection element are disposed within the accommodating cavity. The third gear is sleeved on the input shaft, the fourth gear is sleeved on the second gear shaft and meshes with the third gear, the position feedback element is sleeved on the second gear shaft, and the position detection element is used to detect the rotational position of the position feedback element to obtain the rotation angle of the motor under test.

[0011] In one embodiment, the position feedback element is a code disk, and at least a portion of the code disk is inserted between the first gear and the third gear; the housing is provided with a mounting groove, the position detection element is inserted into the mounting groove, and abuts against the code disk.

[0012] In one embodiment, the position detection element further includes a rack that meshes with the first gear, and the position feedback element is connected to the rack. The position detection element is used to detect the movement position of the position feedback element to obtain the rotation angle of the motor under test.

[0013] In one embodiment, the position detection device includes at least one of a photoelectric sensor, a grating sensor, a capacitive grating sensor, and a magnetic grating sensor.

[0014] In one embodiment, the motor tester further includes a torque detection element disposed on the torque shaft, which is used to detect the torque value output by the motor under test to balance the preset load torque provided by the controllable load element.

[0015] In one embodiment, the torque detection element is a torque sensor, which is attached to the outer surface of the torque shaft;

[0016] And / or, the motor tester further includes a second housing, which is disposed between the mechanism and the controllable load component. The second housing has a third opening, and the torque shaft and the torque detection component are disposed inside the second housing. One end of the torque shaft away from the controllable load component extends out of the second housing through the third opening and is connected to the transmission end for transmission.

[0017] In one embodiment, the controllable load is configured as a magnetorheological sensor.

[0018] This utility model also proposes a motor testing system, including:

[0019] Motor under test;

[0020] As described above, in the motor tester, the test calibration end is connected to the motor under test via a transmission connection;

[0021] And / or, a torque calibration device, which is connected to the test calibration end for calibrating the movement.

[0022] The technical solution of this utility model, by setting a position feedback component linked to the transmission component and a position detection component for detecting its position in the motor tester, can obtain the rotation angle of the motor under test in real time and accurately during the rotation process. At the same time, by using a controllable load component to apply a preset load torque and connecting the transmission end to the load component through a torque shaft, the actual working conditions are simulated, thereby accurately recording the rotation angle change of the motor under test under real load conditions. This effectively solves the technical problem that traditional testing methods cannot accurately obtain dynamic rotation angle data, making it difficult to reliably monitor and analyze the rotation angle characteristics of the motor. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of an embodiment of the motor tester provided by this utility model;

[0025] Figure 2 for Figure 1 A structural diagram from another angle;

[0026] Figure 3 for Figure 1 A partial schematic diagram;

[0027] Figure 4 for Figure 3 A structural diagram from another angle;

[0028] Figure 5 for Figures 1 to 4 Schematic diagram of the structure of the second shell in the middle;

[0029] Figure 6 This is a schematic diagram of another embodiment of the motor tester provided by this utility model;

[0030] Figure 7 for Figure 6 A structural diagram from another angle;

[0031] Figure 8 A schematic diagram of another embodiment of the motor tester provided by this utility model;

[0032] Figure 9 for Figure 8 A structural diagram from another angle.

[0033] Explanation of icon numbers:

[0034] 100. Motor tester; 1. Mechanism; 101. Receiving cavity; 102. First opening; 103. Second opening; 104. Mounting slot; 11. Transmission assembly; 111. Transmission end; 112. Test and calibration end; 113. First gear; 114. Second gear; 12. First housing; 2. Controllable load component; 3. Torque shaft; 4. Position detection assembly; 41. Position feedback component; 42. Position detection component; 43. Second gear shaft; 44. Third gear; 45. Fourth gear; 5. Torque detection component; 6. Second housing; 601. Third opening; 7. Control assembly; 8. Interface assembly; 81. Terminal communication interface; 82. Torque calibration device communication interface; 83. Memory card interface; 84. Equipment power supply port; 9. Display assembly; 10. Housing; 1001. Mounting cavity; 1002. Mounting port.

[0035] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0037] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0038] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0039] Existing motor testing methods have technical limitations, failing to accurately acquire and record the actual rotation angle during motor rotation, thus making it difficult to effectively monitor and analyze its angular characteristics.

[0040] Therefore, this utility model proposes a motor tester 100, which aims to improve the accuracy and capability of motor rotation angle measurement.

[0041] Please see Figures 1 to 4 In one embodiment of this utility model, the motor tester 100 includes:

[0042] The mechanism 1 includes a transmission assembly 11, which has a transmission end 111 and a test calibration end 112 for connecting the motor under test.

[0043] Controllable load component 2 is used to provide a preset load torque;

[0044] Torque shaft 3 connects transmission end 111 to controllable load component 2.

[0045] The position detection component 4 includes a position feedback component 41 and a position detection component 42 connected to the position feedback component 41. The position feedback component 41 is connected to the transmission component 11. The position detection component 42 is used to detect the rotational or moving position of the position feedback component 41 in order to obtain the rotation angle of the motor under test.

[0046] In this embodiment, the transmission component 11 in the mechanism 1 serves as the core of power transmission. One end of the component is the transmission end 111, and the other end is the test calibration end 112. The test calibration end 112 can be rigidly connected to the output shaft of the motor under test or connected through a coupling to ensure that the motor rotation motion can be transmitted to the motor tester 100 without slippage, thereby truly reflecting the actual rotation state of the motor and ensuring the original accuracy of the test signal.

[0047] The controllable load component 2 can be, but is not limited to, a magnetorheological sensor, a magnetic powder brake, an eddy current brake, or a servo motor. It can apply and precisely adjust a preset load torque to simulate the actual running resistance of the motor under different operating conditions. This allows the test to be conducted not only under no-load conditions but also under real load conditions, thereby improving the engineering practicality and data representativeness of the test.

[0048] As a key component connecting the transmission end 111 of the transmission assembly 11 and the controllable load component 2, the torsion shaft 3 adopts a flexible or semi-rigid structure design, which can reliably transmit torque and allow small alignment deviations, avoiding the impact of mechanical stress on transmission accuracy. At the same time, its torsional deformation can indirectly reflect torque changes, enhancing the sensitivity of the motor tester 100 to dynamic load response.

[0049] The position detection component 4 includes a position feedback element 41 linked to the transmission component 11, such as the rotor, optical encoder disk, or magnetic encoder disk of a rotary encoder, and a position detection element 42 for detecting its position, such as the stator sensor of an encoder, a photoelectric readout head, or a magnetic sensor. When the motor drives the transmission component 11 to rotate, the position feedback element 41 rotates synchronously, and the position detection element 42 captures its angular displacement signal or linear displacement signal in real time and converts it into a digital or analog electrical signal output, thereby achieving high-resolution, continuous, and accurate acquisition and recording of the motor rotation angle.

[0050] In summary, the technical solution of this utility model, by setting a position feedback component 41 linked to the transmission component 11 and a position detection component 42 for detecting its position in the motor tester 100, can obtain the rotation angle of the motor under test in real time and accurately during the rotation process; at the same time, by using the controllable load component 2 to apply a preset load torque, and connecting the transmission end 111 to the load component through the torque shaft 3, the actual working conditions are simulated, thereby accurately recording the rotation angle change of the motor under test under real load conditions, effectively solving the technical problem that traditional testing methods cannot accurately obtain dynamic rotation angle data, making it difficult to reliably monitor and analyze the rotation angle characteristics of the motor.

[0051] Please see Figures 1 to 4In one embodiment of this utility model, the transmission assembly 11 includes an input shaft, a first gear shaft, a first gear 113, and a second gear 114. The input shaft is a test calibration end 112, the first gear shaft is a transmission end 111, the first gear 113 is sleeved on the input shaft, and the second gear 114 is sleeved on the first gear shaft and meshes with the first gear 113. The mechanism 1 also includes a first housing 12, which has a receiving cavity 101 and a first opening 102 and a second opening 103 communicating with the receiving cavity 101. The transmission assembly 11 is disposed in the receiving cavity 101. The first opening 102 and the second opening 103 are arranged opposite to each other. The test calibration end 112 extends out of the first housing 12 through the first opening 102, and the transmission end 111 extends out of the first housing 12 through the second opening 103 and is connected to the torque shaft 3.

[0052] In this embodiment, the input shaft, serving as the test calibration end 112, extends from the first opening 102 of the first housing 12 and can directly connect to the output shaft of the motor under test, thus achieving power input connection. The first gear 113 is fixedly sleeved on the input shaft and rotates synchronously with the motor. The second gear 114 is sleeved on the first gear shaft and meshes with the first gear 113, transmitting the rotational motion of the input shaft to the first gear shaft through the first gear 113 and the second gear 114. The first gear shaft, serving as the transmission end 111, extends from the second opening 103 of the first housing 12 and connects to the external torque shaft 3, thereby transmitting the rotational power of the motor to the controllable load component 2 through the gear transmission system composed of the first gear 113 and the second gear 114, thus achieving load simulation. The entire transmission assembly 11 is stably installed in the accommodating cavity 101 of the first housing 12. The housing not only provides rigid support and centering for the gears and shaft system but also serves to prevent dust, reduce vibration, and provide safety protection, ensuring a smooth and reliable transmission process. Through this structural design, the rotational motion of the motor is transmitted to the subsequent torque shaft 3 and position detection component 4, providing a reliable mechanical transmission basis for accurately obtaining the actual rotation angle of the motor, and further ensuring the accuracy and repeatability of the angle detection.

[0053] Please see Figures 1 to 4 In one embodiment of this utility model, the position detection component 4 further includes a second gear shaft 43, a third gear 44, and a fourth gear 45. The second gear shaft 43, the third gear 44, the fourth gear 45, the position feedback component 41, and the position detection component 42 are disposed in the accommodating cavity 101. The third gear 44 is sleeved on the input shaft, and the fourth gear 45 is sleeved on the second gear shaft 43 and meshes with the third gear 44. The position feedback component 41 is sleeved on the second gear shaft 43, and the position detection component 42 is used to detect the rotational position of the position feedback component 41 to obtain the rotation angle of the motor under test.

[0054] In this embodiment, the third gear 44 is fixedly mounted on the input shaft and rotates synchronously with the output shaft of the motor under test. The fourth gear 45 is sleeved on the second gear shaft 43 and meshes with the third gear 44, thereby transmitting the rotational motion of the input shaft to the second gear shaft 43. The second gear shaft 43 is arranged parallel to the first gear shaft, and the motion is split and transmitted through the meshing of the third gear 44 and the fourth gear 45. The position feedback element 41 is fixedly sleeved on the second gear shaft 43 and rotates synchronously with it, mechanically transmitting the rotation angle of the motor to the position detection element 42. The position detection element 42 is fixedly mounted in the first housing 12 and detects the angular displacement change of the position feedback element 41 in real time, for example, by outputting pulse signals or analog angle signals through photoelectric or magnetoelectric induction, thereby accurately calculating the actual rotation angle of the motor under test. This gear transmission structure forms a stable transmission ratio relationship between the position feedback element 41 and the input shaft, ensuring the linearity and accuracy of angle detection. At the same time, the entire detection path is parallel to the main force transmission path, avoiding direct interference of load changes to the position detection component 4. All components are housed within the accommodating cavity 101 of the first housing 12, thus receiving good protection and enhancing the anti-interference capability and long-term operational stability of the motor tester 100.

[0055] Please see Figures 1 to 4 In one embodiment of the present invention, the position feedback element 41 is a code disk, at least part of which is inserted between the first gear 113 and the third gear 44; the housing is provided with a mounting groove 104, and the position detection element 42 is inserted into the mounting groove 104 and abuts against the code disk.

[0056] In this embodiment, the code disk, as a position feedback element 41, is fixedly sleeved on the second gear shaft 43 and located in the axial space between the first gear 113 and the third gear 44. This means the code disk is embedded in the gear gap, avoiding additional external space occupation and improving the overall rigidity and vibration resistance of the motor tester 100. The outer circumference of the code disk is provided with equally spaced engraved lines or coded patterns. When the second gear shaft 43 rotates with the transmission of the third gear 44 and the fourth gear 45, the code disk rotates synchronously. The mounting groove 104 on the housing is used to fix the position detection element 42, which is a photoelectric sensor or a magnetoelectric induction head. Its detection end is inserted into the mounting groove 104 and maintains alignment or slight contact with the outer edge of the code disk, ensuring continuous and slip-free reading of the code disk's displacement signal during rotation. When the code disk rotates, the position detection element 42 generates corresponding pulse electrical signals based on changes in light flux or magnetic field. These signals are counted and processed to calculate the angular displacement, thereby obtaining the rotation angle of the motor under test in real time. In addition, the position detection component 42 is installed in the mounting slot 104 by plugging in, which facilitates assembly, disassembly and maintenance, while ensuring the stability of detection accuracy.

[0057] Please see Figures 1 to 4In one embodiment of the present invention, the position detection component 42 further includes a rack, which meshes with the first gear 113. The position feedback component 41 is connected to the rack. The position detection component 42 is used to detect the movement position of the position feedback component 41 in order to obtain the rotation angle of the motor under test.

[0058] In this embodiment, the rack meshes with the first gear 113 mounted on the input shaft and is arranged circumferentially. When the motor under test drives the input shaft to rotate, the first gear 113 acts as the driving wheel, driving the rack to perform linear reciprocating motion. The distance it moves is proportional to the rotation angle of the first gear 113. The position feedback element 41 is rigidly connected to the rack and moves linearly synchronously with the rack, converting the rotation angle of the motor into a linear displacement signal. The position detection element 42 uses a linear displacement sensor, such as a grating ruler, magnetostrictive sensor, or potentiometer displacement gauge. Its detection end is connected to or non-contact aligned with the position feedback element 41 to capture its movement position in real time and convert the displacement signal into an electrical signal output. Through a preset transmission ratio relationship, i.e., the standard arc length corresponding to the pitch circle diameter of the gear and the rotation angle, the detected linear displacement can be converted into the actual rotation angle of the motor. This structure uses a gear and rack mechanism to realize the conversion of rotational motion into linear motion, allowing the position detection element 42 to be arranged inside the housing or in a space that is easy to install, improving the flexibility of the motor tester 100.

[0059] Please see Figures 1 to 4 In one embodiment of the present invention, the position detection component 42 includes at least one of a photoelectric sensor, a grating sensor, a capacitive grating sensor, and a magnetic grating sensor.

[0060] In this embodiment, the position detection component 42 employs at least one of a photoelectric sensor, a grating sensor, a capacitive grating sensor, or a magnetic grating sensor to detect position changes in the position feedback component 41 synchronized with the rotational motion of the motor under test, thereby obtaining its rotation angle. When a photoelectric sensor is selected, it works in conjunction with an encoder disk to output pulse signals by detecting the periodic changes in light flux during the rotation of the encoder disk, thus achieving angle measurement. When a grating sensor is used, the moiré fringe effect between the grating disk and the reading head is utilized to achieve high-resolution, high-precision angle or displacement detection. The capacitive grating sensor, based on the principle of capacitance change, determines the position by detecting the capacitance change caused by the relative displacement between the moving grating and the fixed grating, and has the advantage of strong resistance to oil and dust interference. The magnetic grating sensor utilizes the magnetic field change between the magnetic encoder disk and the magnetic induction head for non-contact detection, and features robust structure, resistance to harsh environments, and long service life. The above-mentioned sensors can be flexibly selected or combined according to actual testing needs, which can ensure the accuracy and response speed of angle detection, and improve the adaptability and reliability of the motor tester 100 under different working conditions.

[0061] Please see Figures 1 to 4In one embodiment of the present invention, the motor tester 100 further includes a torque detection element 5, which is disposed on the torque shaft 3 and is used to detect the torque value output by the motor under test for balancing the preset load torque provided by the controllable load element 2.

[0062] In this embodiment, the torque detection element 5 is integrated onto the torque shaft 3. It can be a strain gauge torque sensor or a non-contact magnetoelastic torque sensor, etc., to measure in real time the minute deformation or torque signal generated by the torque shaft 3 due to force during transmission. When the motor under test is running, its output torque is transmitted to the controllable load element 2 through the transmission assembly 11 and the torque shaft 3. To maintain a stable speed, the motor output torque must be balanced with the preset load torque applied by the controllable load element 2. The torque detection element 5 captures the actual output torque value during this dynamic balancing process and converts the mechanical torque into an electrical signal output, realizing the quantitative detection of the motor's output capability. This design allows the tester to not only acquire the motor's rotation angle information, but also simultaneously obtain its torque response characteristics under different load conditions, thereby comprehensively evaluating the motor's dynamic performance, such as start-stop characteristics, load response speed, torque fluctuation, etc.

[0063] Please see Figures 1 to 4 In one embodiment of this utility model, the torque detection component 5 is a torque sensor, which is attached to the outer surface of the torque shaft 3.

[0064] In this embodiment, the torque sensor adopts a strain gauge structure, directly attached to the outer surface of the torque shaft 3, and arranged radially in a crisscross pattern to form a Wheatstone bridge circuit. When the motor under test is running, its output torque is transmitted to the controllable load 2 through the torque shaft 3. Under the action of torque, the torque shaft 3 produces a small elastic torsional deformation, causing the strain gauges to undergo corresponding tensile and compressive deformations. Since the strain gauges are symmetrically attached in a radially crisscrossing direction and arranged at ±45°, they can sensitively capture the shear strain on the surface of the torque shaft 3, thereby accurately reflecting the magnitude of the torque. The resistance value of the strain gauge changes with the deformation. By measuring the voltage signal output by the Wheatstone bridge, the actual torque value borne by the torque shaft 3 can be accurately calculated, thereby obtaining the real-time torque output by the motor to balance the preset load applied to the controllable load 2. At the same time, the torque sensor is directly attached to the surface of the torque shaft 3 without changing the original transmission structure, realizing non-invasive measurement and avoiding the introduction of additional errors.

[0065] Please see Figure 5 In one embodiment of the present invention, the motor tester 100 further includes a second housing 6, which is disposed between the mechanism 1 and the controllable load component 2. The second housing 6 has a third opening 601. The torque shaft 3 and the torque detection component 5 are disposed inside the second housing 6. One end of the torque shaft 3 away from the controllable load component 2 extends out of the second housing 6 through the third opening 601 and is connected to the transmission end 111 for transmission.

[0066] In this embodiment, the second housing 6, serving as an independent support and protection structure, is positioned between the transmission end 111 and the controllable load component 2. It accommodates and fixes the torque shaft 3 and the torque detection component 5, forming a stable and enclosed installation environment. The torque shaft 3 is integrally arranged within the second housing 6, with one end extending outside the housing through the third opening 601, achieving a rigid connection with the transmission end 111 or docking via a coupling to ensure the continuity and coaxiality of power transmission. The other end connects to the controllable load component 2, forming a complete transmission chain. The torque detection component 5 is integrated into the outer surface of the torque shaft 3 and located inside the second housing 6, protected by the second housing 6 to prevent external dust, oil, mechanical impact, or electromagnetic interference from affecting the torque detection component 5, thereby ensuring the stability and accuracy of torque signal acquisition. The second housing 6 also provides support and positioning, offering radial support to the torque shaft 3 through bearings or support structures, reducing deflection caused by excessive cantilever length, and improving transmission stiffness and measurement accuracy.

[0067] Please see Figure 6 and Figure 7 In one embodiment of this utility model, the controllable load 2 is configured as a magnetorheological sensor.

[0068] In this embodiment, the controllable load component 2 uses a magnetorheological sensor as an integrated load execution and feedback device. Its interior is filled with a magnetorheological fluid, which can rapidly change the fluid's viscosity and shear strength when a magnetic field is applied, thereby generating an adjustable damping torque. When the motor under test drives the transmission assembly 11, the magnetorheological sensor adjusts the magnetic field strength according to the control signal, generating a load torque that matches the set value in real time. This simulates the actual working resistance of the motor under different operating conditions, enabling load testing of the motor's output characteristics.

[0069] Please see Figure 6 and Figure 7 In one embodiment of this utility model, the motor tester 100 further includes a control component 7, which is electrically connected to the controllable load component 2, the position detection component 42, and the torque detection component 5, respectively. The control component 7 is used to control the controllable load component 2 to provide a preset load torque to the torque shaft 3, to control the position detection component 42 to detect the rotational or moving position of the position feedback component 41, and to control the torque detection component 5 to detect the torque output by the motor under test to balance the preset load torque provided by the controllable load component 2.

[0070] In this embodiment, the motor tester 100 also includes a control component 7, which is electrically connected to the controllable load component 2, the position detection component 42, and the torque detection component 5. The control component 7 serves multiple functions: firstly, it controls the controllable load component 2 to provide a preset load torque to the torque shaft 3, thereby simulating different working resistance conditions; secondly, the control component 7 is also responsible for controlling the position detection component 42 to detect the rotation or movement position of the position feedback component 41, ensuring real-time monitoring of the position changes of the motor under test; furthermore, the control component 7 is also used to regulate the operation of the torque detection component 5 to accurately measure the actual torque value output by the motor under test to balance the preset load torque provided by the controllable load component 2. This integrated control method not only enables the measurement of performance parameters of the motor under test under different load conditions but also enhances the automation level and testing efficiency of the entire motor tester 100.

[0071] Please see Figure 6 and Figure 7 In one embodiment of the present invention, the motor tester 100 further includes an interface component 8, which is electrically connected to the control component 7. The interface component 8 includes at least one of a terminal communication interface 81, a torque calibration device communication interface 82, a memory card interface 83, and a device power supply port 84.

[0072] In this embodiment, the terminal communication interface 81 adopts a USB communication port or a wireless communication interface, which can be connected to terminal devices such as computers, mobile phones, or tablets to realize real-time transmission of test data. This facilitates the generation of multi-dimensional test curves and data analysis tables in the host computer software, improving the visualization and processing efficiency of test results. The torque calibration device communication interface 82 not only supports communication with external torque calibration devices, but also outputs various voltage signals, pulse signals, and waveform sources for frequency sweep testing of the motor to evaluate its dynamic response characteristics. This interface also serves as the power supply interface for the matching torque calibration device, achieving integrated power supply and communication and simplifying on-site wiring. The memory card interface 83 adopts an SD card slot, etc., for storing test data during long-term operation, supporting bare-metal operation of the motor tester 100 without external devices. This interface can also be used to insert dongle software for software authorization management, effectively preventing the system software from being illegally copied or cracked, ensuring system security. The device power supply port 84 provides power input to the entire motor tester 100, ensuring the normal operation of each functional module. By integrating the above-mentioned multiple interfaces, the motor tester 100 can achieve efficient collaboration with external devices, taking into account multiple needs such as data acquisition, remote control, local storage and system security, thereby improving the portability and applicability of the motor tester 100.

[0073] Please see Figure 6 and Figure 7In one embodiment of the present invention, the motor tester 100 further includes a display component 9, which is electrically connected to the control component 7. The display component 9 is used to display the rotation angle of the motor under test detected by the displacement detection and to display the torque value detected by the torque detection component 5.

[0074] In this embodiment, the display component 9 serves as the human-machine interface, receiving angle and torque data processed by the control component 7 in real time and presenting the test results intuitively. It can continuously display the actual rotation angle of the motor acquired by the position detection component 42, including absolute angle, relative displacement angle, or number of rotations, while simultaneously displaying the output torque value measured by the torque detection component 5, which can be represented as instantaneous value, peak value, or dynamic change curve. The display component 9 can use an LCD screen or a touch screen, supporting multiple display modes such as digital readings, trend graphs, and waveform graphs, allowing operators to quickly grasp the motor's operating status and performance on-site without relying on external equipment. During the test, users can observe the real-time correspondence between rotation angle and torque to determine the motor's start-stop characteristics, response speed, load stability, and whether there are any abnormal phenomena such as jamming or slippage.

[0075] Please see Figure 8 and Figure 9 In one embodiment of the present invention, the motor tester 100 further includes a housing 10, which has a mounting cavity 1001 and a mounting port 1002 communicating with the mounting cavity 1001. The motor core 1, the controllable load component 2, the torque shaft 3 and the position detection component 4 are disposed in the mounting cavity 1001, and the test calibration end 112 extends out of the housing 10 through the mounting port 1002.

[0076] In this embodiment, the housing 10 serves as the supporting and protective shell of the overall structure. Its internal mounting cavity 1001 provides mounting space for components such as the mechanism 1, controllable load component 2, torque shaft 3, and position detection assembly 4. This provides dustproof, oilproof, and foreign object intrusion protection for these components, extending the service life of the motor tester 100 and enhancing its adaptability in complex industrial environments. The mounting port 1002 is located in the housing 10, allowing the test calibration end 112 to extend from the mounting cavity 1001 to the outside of the housing 10. This facilitates quick docking and disassembly with the output shaft of the motor under test, ensuring smooth power input transmission and improving the convenience of testing operations.

[0077] This utility model also proposes a motor testing system; please refer to [link / reference]. Figures 1 to 9The motor tester 100 includes a motor under test, a torque calibration device, and a motor tester 100. The specific structure of the motor tester 100 is as described in the above embodiments. Since this motor test system adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0078] The motor tester 100 has a test calibration end 112 that is connected to the output shaft of the motor under test to achieve stable power input transmission. A torque calibration device is connected to the test calibration end 112 and is used to calibrate the internal mechanism 1 and torque detection element 5 of the motor tester 100 to ensure the accuracy and reliability of the test data. The torque calibration device can be a torque calibrator or a torque calibration handle. When using a torque calibrator, the operator sets the target calibration torque on the instrument and applies torque to the transmission component 11 of the motor tester 100. When the torque displayed by the torque calibrator reaches the set value, the calibration button is pressed, and the display component 9 of the motor tester 100 displays the output value of its internal torque detection element 5. After the user inputs the set torque, the motor testing system automatically calculates the difference between the two and completes the calibration compensation of the torque detection element 5. When using a torque calibration handle, the handle can communicate with the interface component 8 of the motor tester 100 via wired or wireless means. The torque value output by the handle can be remotely set through the control panel of the motor tester 100. When the handle reaches the set torque and triggers the calibration command, the command can be implemented through the button on the motor tester 100 or the button on the handle. The motor tester 100 can directly read the set torque value of the torque calibration handle and, in conjunction with the feedback signal from its own torque detection element 5, automatically complete the calibration process.

[0079] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A motor tester, characterized in that, include: The mechanism includes a transmission assembly having a transmission end and a test calibration end for connecting the motor under test; A controllable load component used to provide a preset load torque; A torsion shaft connects the transmission end to the controllable load component. A position detection component includes a position feedback element and a position detection element connected to the position feedback element. The position feedback element is connected to the transmission component. The position detection element is used to detect the rotational or movement position of the position feedback element in order to obtain the rotation angle of the motor under test.

2. The motor tester as described in claim 1, characterized in that, The transmission assembly includes an input shaft, a first gear shaft, a first gear, and a second gear. The input shaft is the test calibration end, the first gear shaft is the transmission end, the first gear is sleeved on the input shaft, and the second gear is sleeved on the first gear shaft and meshes with the first gear. The mechanism also includes a first housing, which has a receiving cavity and a first opening and a second opening communicating with the receiving cavity. The transmission assembly is disposed in the receiving cavity, with the first opening and the second opening opposite to each other. The test calibration end extends out of the first housing through the first opening, and the transmission end extends out of the first housing through the second opening and is connected to the torque shaft.

3. The motor tester as described in claim 2, characterized in that, The position detection component further includes a second gear shaft, a third gear, and a fourth gear. The second gear shaft, the third gear, the fourth gear, the position feedback element, and the position detection element are disposed within the accommodating cavity. The third gear is sleeved on the input shaft, and the fourth gear is sleeved on the second gear shaft and meshes with the third gear. The position feedback element is sleeved on the second gear shaft, and the position detection element is used to detect the rotational position of the position feedback element to obtain the rotation angle of the motor under test.

4. The motor tester as described in claim 3, characterized in that, The position feedback component is a code disk, and at least a portion of the code disk is inserted between the first gear and the third gear; the housing is provided with a mounting groove, and the position detection component is inserted into the mounting groove and abuts against the code disk.

5. The motor tester as described in claim 2, characterized in that, The position detection device further includes a rack, which meshes with the first gear. The position feedback device is connected to the rack. The position detection device is used to detect the movement position of the position feedback device to obtain the rotation angle of the motor under test.

6. The motor tester as described in claim 3 or 5, characterized in that, The position detection device includes at least one of a photoelectric sensor, a grating sensor, a capacitive grating sensor, and a magnetic grating sensor.

7. The motor tester as described in claim 1, characterized in that, The motor tester also includes a torque detection element, which is located on the torque shaft and is used to detect the torque value output by the motor under test to balance the preset load torque provided by the controllable load element.

8. The motor tester as described in claim 7, characterized in that, The torque detection component is a torque sensor, which is attached to the outer surface of the torque shaft. And / or, the motor tester further includes a second housing, which is disposed between the mechanism and the controllable load component. The second housing has a third opening, and the torque shaft and the torque detection component are disposed inside the second housing. One end of the torque shaft away from the controllable load component extends out of the second housing through the third opening and is connected to the transmission end for transmission.

9. The motor tester as described in claim 1, characterized in that, The controllable load is configured as a magnetorheological sensor.

10. A motor testing system, characterized in that, include: Motor under test; The motor tester as described in any one of claims 1 to 9, wherein the test calibration end is connected to the motor under test via a transmission connection; And / or, a torque calibration device, which is connected to the test calibration end for calibrating the movement.

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