Test device for linear actuators

Abstract

Embodiments of the present disclosure provide a testing device for a linear actuator. The testing device comprises a base, a slide assembly coupled to the base, a pair of clamping components fixedly coupled to the slide assembly and the base respectively and oppositely arranged in a length direction of the base to clamp the linear actuator, a sensor assembly coupled to the slide assembly to acquire at least a motion parameter of the slide assembly, an equivalent mass arranged on a side of the slide assembly away from the pair of clamping components and adapted to provide an equivalent inertia corresponding to a predetermined load of the linear actuator, and a control system coupled to the linear actuator and the sensor assembly and adapted to control the linear actuator to drive the slide assembly to slide in the length direction based on a control parameter, and determine a reliability of the control parameter of the linear actuator based on at least the control parameter and the motion parameter acquired by the sensor assembly. In this way, the reliability of the control parameter of the linear actuator can be determined.

Description

Technical Field

[0001] The exemplary embodiments disclosed herein generally relate to the field of robotics, and particularly to a testing apparatus for linear actuators. Background Technology

[0002] Linear actuators, characterized by high load capacity and high power density, can be used to drive the legs and arms of robots. However, conventional testing equipment cannot meet the testing requirements for linear actuators and cannot accurately evaluate their performance. Summary of the Invention

[0003] In a first aspect of this disclosure, a testing apparatus for a linear actuator is provided. The testing apparatus includes: a base; a slide assembly coupled to the base; a pair of clamping members fixedly coupled to the slide assembly and the base, respectively, and arranged opposite to each other along the length of the base to clamp the linear actuator; a sensor assembly coupled to the slide assembly to acquire at least motion parameters of the slide assembly; an equivalent mass block arranged on the side of the slide assembly away from the pair of clamping members, adapted to provide an equivalent inertia corresponding to a predetermined load of the linear actuator; and a control system coupled to the linear actuator and the sensor assembly, and controlling the linear actuator to drive the slide assembly to slide along the length direction based on control parameters, to determine the reliability of the control parameters of the linear actuator based at least on the control parameters and the motion parameters acquired by the sensor assembly.

[0004] In some embodiments, the equivalent mass block includes a plurality of mass blocks, each having a different equivalent inertia, to simulate the load of the linear actuator under different operating conditions.

[0005] In some embodiments, the slide assembly includes: a pair of slide rails arranged on the base along the length direction of the base and spaced apart by a predetermined distance; a sliding platform movably coupled to the pair of slide rails to be adapted to fix a first clamping member of a pair of clamping members; a lead screw arranged between the pair of slide rails along the length direction of the base; and a nut movably coupled to the lead screw and fixedly coupled to the lower surface of the sliding platform to be adapted to move with the sliding platform and drive the lead screw to rotate.

[0006] In some embodiments, an equivalent mass block is fixedly coupled to the end of the lead screw away from the first clamping member.

[0007] In some embodiments, the testing apparatus further includes: an encoder bracket fixedly coupled to the base and disposed on the side of the sliding platform near the first clamping member, wherein the sensor assembly further includes an encoder fixedly coupled to the encoder bracket and the encoder coupled to the end of the lead screw near the first clamping member.

[0008] In some embodiments, the control system includes: a data acquisition module coupled to a sensor assembly and adapted to acquire data acquired by the sensor assembly; a controller coupled to a linear actuator and adapted to control the movement of the linear actuator; and a power supply module adapted to supply power to the linear actuator and the sensor assembly.

[0009] In some embodiments, the testing apparatus further includes a human-machine interface component coupled to the control system to allow operation to input control parameters, switch detection states, and / or present detection results.

[0010] In some embodiments, the sensor assembly further includes a temperature sensor coupled to the linear actuator and coupled to a data acquisition module, adapted to measure the temperature of the linear actuator.

[0011] In some embodiments, the sensor assembly further includes a force sensor disposed between a second clamping member of a pair of clamping members and a mounting base for securing the second clamping member to a base, and coupled to a data acquisition module, and adapted to measure the load-bearing force of the linear actuator.

[0012] In some embodiments, the testing device further includes: a plurality of support feet and a plurality of casters, respectively fixedly coupled to the bottom of the base, suitable for adjusting the level of the testing device and moving the position of the testing device.

[0013] In some embodiments, a plurality of first positioning holes and a plurality of positioning grooves are arranged on the side of the upper surface of the base away from the slide assembly. The plurality of first positioning holes are arranged along the length direction of the base and are adapted to allow a second clamping member of a pair of clamping members to couple to one of the first positioning holes, thereby adjusting the position of the second clamping member on the base along the length direction. Each of the plurality of first positioning holes includes a plurality of positioning holes, the plurality of positioning holes being spaced apart by a predetermined distance in the width direction of the base, and each positioning groove being arranged between two adjacent positioning holes in the width direction.

[0014] In some embodiments, the mounting base includes: a body portion including a first mounting hole adapted to align with one set of first positioning holes from a plurality of sets of first positioning holes to couple the body portion to a predetermined position on the base; and a mounting portion extending from one end of the body portion near the second clamping member in a direction perpendicular to the base and adapted to mount the second clamping portion.

[0015] In some embodiments, a groove is arranged on the upper surface of the sliding platform near the first clamping member, and a plurality of second positioning holes are arranged in the groove along the length direction of the base to adjust the position of the first clamping member in the length direction of the base.

[0016] In some embodiments, the fixing block is coupled to the first clamping member, and the fixing block is provided with a plurality of second mounting holes corresponding to the second positioning holes, so that the fixing block is coupled to the groove.

[0017] In some embodiments, each of the pair of clamping components includes: a clamping base coupled to a fixing block and a mounting portion, respectively; and a clamping head coupled to the clamping base, suitable for linear actuators of various sizes.

[0018] It should be understood that the content described in this content section is not intended to limit the key or essential features of the embodiments of this disclosure, nor is it intended to restrict the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description

[0019] The above and other features, advantages, and aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description. In the drawings, the same or similar reference numerals denote the same or similar elements, wherein:

[0020] Figure 1 A perspective view of a test apparatus according to an embodiment of the present disclosure is shown; and

[0021] Figure 2 A top view of a test apparatus according to an embodiment of the present disclosure is shown. Detailed Implementation

[0022] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0023] It should be noted that the headings of any section / subsection provided herein are not limiting. Various embodiments are described throughout this document, and embodiments of any type may be included under any section / subsection. Furthermore, embodiments described in any section / subsection may be combined in any way with any other embodiments described in the same section / subsection and / or different sections / subsections.

[0024] In the description of embodiments of this disclosure, the term "comprising" and similar terms should be understood as open-ended inclusion, i.e., "including but not limited to". The term "based on" should be understood as "at least partially based on". The term "one embodiment" or "the embodiment" should be understood as "at least one embodiment". The term "some embodiments" should be understood as "at least some embodiments". Other explicit and implicit definitions may also be included below. The terms "first", "second", etc., may refer to different or the same objects. Other explicit and implicit definitions may also be included below.

[0025] As mentioned earlier, conventional linear actuator testing equipment can only perform simple tests and is difficult to simulate complex actual working conditions. For example, conventional testing equipment cannot simulate control stability problems caused by mass or inertia.

[0026] To address, or at least partially address, the aforementioned problems or other potential issues of conventional linear actuators, embodiments of this disclosure provide a testing apparatus for linear actuators. According to the scheme of this disclosure, under the control of a control system, different loads are applied to the linear actuator using equivalent mass blocks, enabling the testing of the linear actuator's performance under different inertial conditions. This allows for the evaluation of the suitability of the linear actuator's control parameters and the occurrence of oscillations. Furthermore, based on the actual load of the linear actuator, equivalent mass blocks with minimum and maximum inertia are derived, thereby simulating the suitability of the control parameters under light and heavy loads. In this way, the actual load of the linear actuator can be accurately simulated, and the load-bearing capacity and stability of the linear actuator under different loads can be tested.

[0027] The following will combine Figures 1 to 2 This describes an example structure of a test apparatus for a linear actuator. The test apparatus for a linear actuator according to embodiments of this disclosure generally includes at least a base 1, a slide assembly 2, a pair of clamping components, a sensor assembly, an equivalent mass block 5, and a control system 10. For example, the linear actuator may include a planetary roller screw. A planetary roller screw includes rollers, a screw, and a nut. When the nut rotates, the rollers roll within the nut while simultaneously moving axially and rotating within the threaded grooves of the screw, thereby driving the screw to produce linear motion in the axial direction. Because the rollers, screw, and nut use rolling contact rather than sliding friction, this design improves transmission efficiency, load capacity, and durability, achieving efficient and precise linear motion output.

[0028] The base 1 includes a horizontally placed cuboid platform, providing stable support for the entire detection device. The slide assembly 2, a pair of clamping components, some sensor assemblies (force sensors), and the equivalent mass block 5 are all arranged on the base 1, and the control system 10 is arranged close to the base 1. The base 1 can be made of high-strength metal materials, such as aluminum alloy or alloy steel.

[0029] The slide assembly 2 is coupled to the upper surface of the base 1, which can fix the linear actuator. Under the drive of the linear actuator, the sliding platform 23 of the slide assembly 2 can move along the length direction of the base (that is, the axial direction of the linear actuator).

[0030] In some embodiments, the slide assembly 2 may include a pair of slide rails 21, a sliding platform 23, a lead screw 22, and a nut 25. The pair of slide rails 21 are arranged on the base 1 along the length direction of the base 1 and spaced apart by a predetermined distance. That is, the pair of slide rails 21 extend along the length direction of the base 1 and are arranged parallel to each other on both sides of the width direction of the base 1.

[0031] The sliding platform 23 is movably coupled to a pair of slide rails 21 to fix the first clamping component 11 of a pair of clamping components. A lead screw 22 is arranged between the pair of slide rails 21 along the length of the base 1. A nut 25 is fixedly coupled to the lower surface of the sliding platform 23 and movably coupled to the lead screw 22, so as to drive the lead screw 22 to rotate while moving with the sliding platform 23. When the output end of the linear actuator performs linear motion, it drives the sliding platform 23 to perform linear motion along the pair of guide rails 21. During this process, the nut 25 coupled to the sliding platform 23 moves with the sliding platform 23 and drives the lead screw 22 to rotate. In this way, the linear motion of the output end of the linear actuator is converted into the movement of the sliding platform 23 of the slide assembly 2 and the rotation of the lead screw 22. During this process, sensors are used to collect the rotation information of the lead screw 22 and the movement information of the sliding platform 23 to determine the reliability of the control parameters of the linear actuator under different operating conditions.

[0032] A pair of clamping components are fixedly coupled to the slide assembly 2 and the base 1, respectively. In the following description, the pair of clamping components will be referred to as the first clamping component 11 and the second clamping component 12. In some embodiments, the first clamping component 11 is arranged on the slide assembly 2 via a fixing block 24, and the second clamping component 12 is fixed to the base 1 via a fixing seat 13. Driven by the slide assembly 2, the first clamping component 11 can move relative to the second clamping component 12 in the longitudinal direction of the base 1.

[0033] A pair of clamping members are arranged opposite each other along the length of the base 1 to clamp a linear actuator. For example, the linear actuator may include a fixed end (e.g., a housing) and an output end (e.g., an end that extends or retracts relative to the housing). The first clamping member 11 is coupled to the output end, and the second clamping member 12 is coupled to the fixed end. In this way, the linear actuator can be stably fixed between the pair of clamping members, ensuring its stability during detection.

[0034] The sensor assembly is coupled to the slide assembly 2 to acquire at least the motion parameters of the slide assembly 2. The motion parameters acquired by the sensor assembly are provided to the control system 10 so that the control system can determine the reliability of the control parameters of the linear actuator based on these motion parameters.

[0035] An equivalent mass block 5 is arranged on the slide assembly 2 and away from the first clamping member 11, thereby providing an equivalent inertia corresponding to a predetermined load on the linear actuator. By accurately calculating the equivalent mass block equivalent to the predetermined load, the inertia of the equivalent mass block can be matched with the inertia of the predetermined load. In some embodiments, the equivalent mass block 5 is fixedly coupled to the end of the lead screw 22 away from the first clamping member 11. The output end of the linear actuator performs linear motion, driving the lead screw 22 to rotate the equivalent mass block 5. In this way, the operation of the linear actuator under different loads can be simulated.

[0036] The control system 10 is coupled to the linear actuator and sensor assembly, and controls the linear actuator to drive the slide assembly 2 to slide along the length direction based on control parameters. The reliability of the linear actuator's control parameters is determined at least based on the control parameters and the motion parameters collected by the sensor assembly. The control parameters can be input to the control system 10 through the human-machine interface component 110. The control parameters can be proportional-integral-derivative (PID) control parameters, acceleration, deceleration, displacement, etc. In this way, the inertia of the linear actuator can be tested, thereby determining the reliability of the linear actuator's control parameters.

[0037] In some embodiments, the equivalent mass block may include multiple mass blocks. These multiple mass blocks may each have a different equivalent inertia to simulate the load of the linear actuator under different operating conditions. In some embodiments, the multiple mass blocks may include a first mass block with the largest equivalent inertia to simulate the maximum load of the linear actuator, and the multiple mass blocks may also include a second mass block with the smallest equivalent inertia to linearly simulate the minimum load of the actuator. The control system 10 controls the linear actuator to drive the slide assembly to slide along the length direction based on control parameters (e.g., PID parameters, acceleration, deceleration parameters, etc.). Simultaneously, the sensor assembly collects the motion parameters of the slide assembly 2 (e.g., speed parameters, displacement parameters, etc.), and based on the control parameters and motion parameters, evaluates whether the control parameters are appropriate under heavy and light load conditions of the linear actuator to improve control accuracy and reliability.

[0038] In some embodiments, the testing apparatus may further include an encoder bracket 3. The encoder bracket 3 is fixedly coupled to the base 1 and arranged on the side of the sliding platform 2 near the first clamping member 11. In this way, the encoder bracket 3 can provide stable support for the encoder 4, which will be mentioned later, and is easy to operate, which helps to improve the accuracy and efficiency of the measurement.

[0039] In some embodiments, the encoder 4 mentioned above, as a component of the sensor assembly, is fixedly coupled to the encoder bracket 3. The encoder 4 is coupled to one end of the lead screw 22 near the first clamping member 11 and is arranged coaxially with the lead screw 22. In this way, the encoder 4 can directly measure the rotational motion of the lead screw 22, enabling more accurate measurement of the actual rotational speed of the lead screw 22. After acquiring the rotation angle and number of revolutions of the lead screw 22, the encoder 4 sends them to the control system 10, thereby enabling the control system 10 to accurately measure the displacement and movement speed of the slide assembly 2. In some embodiments, the encoder may also directly output parameters such as the displacement and movement speed of the slide assembly 2 to the control system 10 through internal processing by acquiring the rotation angle and number of revolutions of the lead screw 22.

[0040] As mentioned earlier, the control system 10 can determine the performance parameters of the linear actuator based on these motion parameters. The linear actuator is controlled to drive the slide assembly 2 to slide along its length direction based on the control parameters, thereby performing performance testing on the linear actuator based at least on the control parameters and the motion parameters collected by the sensor assembly.

[0041] In some embodiments, the control system 10 may include a data acquisition module, a controller, and a power supply module. The data acquisition module is coupled to the sensor assembly and is used to acquire data obtained by the sensor assembly. For example, the data acquisition module can be coupled to the components of the sensor assembly via appropriate wired or wireless connections to acquire data from the sensor assembly. The controller is coupled to the linear actuator and controls its movement. In this way, the controller can precisely control the operation of the linear actuator while simultaneously acquiring and analyzing sensor data, ensuring the accuracy, reliability, and safety of the testing process.

[0042] In some embodiments, the controller can control the movement of the linear actuator according to preset control parameters, for example, the controller can control the linear actuator to accelerate and decelerate.

[0043] In some embodiments, the power module 103 supplies power to the linear actuator and sensor components. In some embodiments, the power module may include a step-down converter to convert the input voltage into multiple different output voltages, thereby supplying power to the linear actuator and sensor components. In this way, the power module provides stable and reliable power support for the entire system.

[0044] In some embodiments, the testing apparatus may further include a human-machine interface component 110. The human-machine interface component 110 is used to allow operation to input control parameters, switch detection states, and / or present detection results. In some embodiments, the human-machine interface component 110 may include devices such as a touch screen and / or buttons, allowing operators to input detection parameters, switch detection states, and present detection results via the touch screen or buttons.

[0045] In some embodiments, the sensor assembly may further include a temperature sensor. The temperature sensor is coupled to the linear actuator and to a data acquisition module for measuring the temperature of the linear actuator. In some embodiments, the temperature sensor may be a patch-type temperature sensor disposed on the outer surface of the linear actuator's motor. Alternatively or additionally, in some embodiments, the temperature sensor may also be integrated inside the linear actuator or at other predetermined locations to measure the linear actuator's temperature. In this way, the temperature sensor can monitor the temperature changes of the linear actuator in real time during operation, evaluate the thermal performance of the linear actuator under different load conditions, thereby improving test reliability.

[0046] In some embodiments, the sensor assembly may further include a force sensor 9. The force sensor 9 is disposed between the second clamping member 12 and the fixed base 13 of a pair of clamping members, and coupled to the data acquisition module, and is used to measure the load-bearing force of the linear actuator. The force sensor 9 acquires the load data of the linear actuator and feeds it back to the data acquisition module. In some embodiments, the force sensor 9 may be a strain gauge force sensor. In this way, the force sensor can measure different load force values ​​borne by the linear actuator in real time and accurately, thereby testing the axial load capacity of the linear actuator.

[0047] In some embodiments, the test assembly may further include multiple support feet and multiple casters 15. The multiple support feet and multiple casters 15 are respectively fixedly coupled to the bottom of the base 1, allowing adjustment of the level of the test device and movement of its position. For example, the casters 15 may be fusible wheels. Fusible wheels are a special type of caster, also known as leveling wheels, combining mobility and stability. They typically include several parts such as a moving wheel, a support bracket, and an adjustment block base. This design allows the fusible wheel to both move the equipment flexibly and fix it when needed, thus balancing mobility and stability, facilitating the movement and leveling adjustment of the test platform.

[0048] In some embodiments, a plurality of first positioning holes 17 and a plurality of positioning grooves 18 are arranged on the side of the upper surface of the base 1 away from the slide assembly 2. The plurality of first positioning holes 17 are arranged along the length direction of the base 1 and enable the second clamping member 12 of a pair of clamping members to be coupled to one of the first positioning holes 17 via the fixing seat 13, thereby adjusting the position of the second clamping member 12 on the base 1 along the length direction. In this way, by adjusting the position of the second clamping member 12 on the base 1, the distance between the first clamping member 11 and the second clamping member 12 is adjusted, thereby meeting the testing requirements of linear actuators of various specifications.

[0049] Each group of first positioning holes 17 includes multiple positioning holes spaced apart by a predetermined distance in the width direction of the base 1. In some embodiments, the multiple positioning holes may not be distributed along a straight line, for example, along a curve or a broken line. In some alternative embodiments, the multiple positioning holes may also be arranged along a straight line, for example, a straight line extending in the width direction. In this way, the fixing seat 13 can be coupled to the base 1 through multiple positioning holes, further improving positioning stability and positioning accuracy.

[0050] Each positioning groove 18 is arranged between two adjacent positioning holes in the width direction. That is, the positioning holes and positioning grooves 18 are arranged alternately in the width direction of the base 1. In some embodiments, the arrangement direction of multiple positioning holes in each group of first positioning holes 17 can be arranged perpendicular to each other with the positioning grooves 18. In this way, the fixing seat 13 is fixed to the base 1 by the positioning grooves 18, which can further improve the positioning accuracy of the second positioning component 12.

[0051] In some embodiments, the mounting base 13 may include a body portion 131 and a mounting portion 132. The body portion 131 includes a first mounting hole 19. The first mounting hole 19 is used to align with one set of first positioning holes 17 from a plurality of sets of first positioning holes 17 to couple the body portion 131 to a predetermined position on the base 1.

[0052] The mounting portion 132 extends from the end of the body portion 131 near the second clamping member 12 in a direction perpendicular to the base 1, and is used to mount the second clamping member 12. That is, the mounting portion 132 is perpendicular to the body portion 131. In some embodiments, the mounting portion 132 has a mounting hole for fixingly coupling the force sensor 9 to the mounting portion 132. In some embodiments, the mounting portion 132 may also have a connection interface for connecting the signal line and power line of the force sensor 9, and for electrically connecting to the data acquisition module, thereby feeding back the data acquired by the force sensor 9 to the data acquisition module. In this way, the force sensor 9 is stably fixed on the base 1, and the electrical connection between the force sensor 9 and the data acquisition module is realized.

[0053] In some embodiments, a groove 231 is arranged on the upper surface of the sliding platform 23 near the first clamping member 11. The groove 231 has a plurality of second positioning holes arranged along the length direction of the base 1 to adjust the position of the first clamping member 11 in the length direction of the base 1. In this way, the first clamping member 11 can be accurately positioned on the sliding platform 23 by means of the groove 231.

[0054] In some embodiments, the testing apparatus may further include a fixing block 24, and the fixing block 24 is provided with a plurality of second mounting holes corresponding to the second positioning holes, so that the fixing block 24 is coupled to the groove 231. By cooperating the second mounting holes of the fixing block 24 with the second positioning holes of the groove 231, the position of the first clamping member 11 on the slide assembly 2 can be finely adjusted, thereby finely adjusting the distance between a pair of clamping members to meet the testing requirements of linear actuators of various specifications.

[0055] In some embodiments, the first clamping component 11 and the second clamping component 12 each include a clamping base and a clamping head. The clamping base is coupled to the fixing block 24 and the mounting portion 132, respectively. The clamping head is coupled to the clamping base 110 and is used to clamp linear actuators of various specifications. In this way, by disassembling and assembling the clamping base, clamping heads of various specifications can be installed to meet the testing needs of linear actuators of various specifications.

[0056] Various implementations of this disclosure have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed implementations. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described implementations. The terminology used herein is chosen to best explain the principles, practical applications, or improvements to technology in the market, or to enable others skilled in the art to understand the various implementations disclosed herein.

Claims

1. A testing apparatus for a linear actuator, comprising: Base (1); The slide assembly (2) is coupled to the base (1); A pair of clamping components are fixedly coupled to the slide assembly (2) and the base (1), respectively, and are arranged opposite to each other in the length direction of the base (1) to clamp the linear actuator; A sensor assembly is coupled to the slide assembly (2) to acquire at least the motion parameters of the slide assembly (2); An equivalent mass block (5) is arranged on the side of the slide assembly (2) away from the pair of clamping members, and is adapted to provide an equivalent moment of inertia corresponding to a predetermined load of the linear actuator; as well as A control system (10) is coupled to the linear actuator and the sensor assembly, and controls the linear actuator to drive the slide assembly (2) to slide along the length direction based on control parameters, so as to determine the reliability of the control parameters of the linear actuator based at least on the control parameters and the motion parameters collected by the sensor assembly.

2. The testing apparatus according to claim 1, wherein the equivalent mass block (5) comprises: Multiple mass blocks, each with a different equivalent inertia, are used to simulate the load on the linear actuator under different operating conditions.

3. The testing apparatus according to claim 1, wherein the slide assembly (2) comprises: A pair of slide rails (21) are arranged on the base (1) along the length direction of the base (1) and spaced apart by a predetermined distance; A sliding platform (23) is movably coupled to the pair of slide rails (21) to be adapted to fix the first clamping member (11) of the pair of clamping members; A lead screw (22) is arranged between the pair of slide rails (21) along the length of the base (1); and Nut (25) is movably coupled to the lead screw (22) and fixedly coupled to the lower surface of the sliding platform (23) to be adapted to move with the sliding platform (23) and drive the lead screw (22) to rotate.

4. The testing apparatus according to claim 2, wherein the equivalent mass block (5) is fixedly coupled to one end of the lead screw (22) away from the first clamping member (11).

5. The testing apparatus according to claim 2, further comprising: The encoder bracket (3) is fixedly coupled to the base (1) and arranged on the side of the sliding platform (2) near the first clamping member (11). The sensor assembly further includes an encoder (4) which is fixedly coupled to the encoder bracket (3) and coupled to one end of the lead screw (22) near the first clamping member (11).

6. The testing apparatus according to any one of claims 1-5, wherein the control system (10) comprises: A data acquisition module is coupled to the sensor assembly and is adapted to acquire the data acquired by the sensor assembly; A controller, coupled to the linear actuator, and adapted to control the movement of the linear actuator; as well as A power supply module is provided to supply power to the linear actuator and the sensor assembly.

7. The testing apparatus according to any one of claims 1-5, further comprising: A human-machine interface component (110) is coupled to the control system (10) to allow operation to input control parameters, switch detection states, and / or present detection results.

8. The testing apparatus according to claim 6, wherein the sensor assembly further comprises: A temperature sensor, coupled to the linear actuator and the data acquisition module, is adapted to measure the temperature of the linear actuator.

9. The testing apparatus according to claim 6, wherein the sensor assembly further comprises: A force sensor (9) is arranged between the second clamping member (12) of the pair of clamping members and the fixing seat (13) for fixing the second clamping member (12) to the base (1), and is coupled to the data acquisition module and is adapted to measure the load-bearing force of the linear actuator.

10. The testing apparatus according to claim 6, further comprising: Multiple support feet and multiple casters (15) are fixedly coupled to the bottom of the base (1), which are suitable for adjusting the level of the test device and moving the position of the test device.

11. The testing apparatus according to any one of claims 1-5 and 8-10, wherein a plurality of sets of first positioning holes (17) and a plurality of positioning grooves (18) are arranged on the side of the upper surface of the base (1) away from the slide assembly (2), the plurality of sets of first positioning holes (17) being arranged along the length direction of the base (1) and adapted to allow a second clamping member (12) of the pair of clamping members to couple to one of the sets of first positioning holes (17) to thereby adjust the position of the second clamping member (12) on the base (1) along the length direction, and Each of the plurality of first positioning holes (17) includes a plurality of positioning holes, the plurality of positioning holes being spaced apart by a predetermined distance in the width direction of the base (1), and each of the positioning grooves (18) being arranged in the width direction between two adjacent positioning holes.

12. The testing apparatus according to claim 9, wherein the fixing base (13) comprises: The body part (131) includes a first mounting hole (19) adapted to align with one set of first positioning holes (17) of the plurality of sets of first positioning holes to couple the body part (131) to a predetermined position of the base (1); as well as The mounting part (132) extends from one end of the body part (131) near the second clamping member (12) in a direction perpendicular to the base (1) and is adapted to mount the second clamping member (12).

13. The testing apparatus according to claim 3, wherein a groove (231) is arranged on the upper surface of the sliding platform (23) near the first clamping member (11), and a plurality of second positioning holes are arranged in the groove (231) along the length direction of the base (1) to adjust the position of the first clamping member (11) in the length direction of the base (1).

14. The testing apparatus according to claim 3 further includes a fixing block (24) coupled to the first clamping member (12), and the fixing block (24) is provided with a plurality of second mounting holes corresponding to the second positioning holes, so that the fixing block (24) is coupled to the groove (231).

15. The testing apparatus according to any one of claims 1-5, 8-10, and 12-14, wherein each of the pair of clamping members comprises: The clamping base is coupled to the fixing block (24) and the mounting part (132) respectively; as well as A clamping head, coupled to the clamping base, is suitable for various sizes of the linear actuator.

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