Belt transmission experiment platform control method

Abstract

The invention discloses a belt transmission experiment platform control method. The method comprises the following steps that S1, a transmission belt (6) is made to be under preset pretightening force; s2, enabling a loading operation part (11) to be at an initial position through manual operation of a user, and enabling a speed regulation operation part (12) to be at an initial position through manual operation; s3, the main controller (30) sends an instruction to a driving wheel servo driver (10), and the driving wheel servo driver (10) judges the actual rotating speed of a driving wheel servo motor (3); s4, the main controller (30) records data; s5, increasing the load power; s6, a driven wheel servo driver (20) judges the actual load torque of a driven wheel servo motor (5); step S7, repeating the steps S5-S6; and S8, drawing an experimental curve. The method has the advantage that the drawing accuracy of slip ratio and transmission efficiency curves can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of belt drive experimental platforms, and in particular to a belt drive experimental platform control method. Background Art

[0002] The belt drive experimental platform is used to understand the elastic sliding and slipping phenomena of belt drives. The belt drive experimental platform consists of a motor that drags a generator through a transmission belt to form a belt drive mechanical system. The motor is the prime mover and the generator is the load. The electronic control circuit provides power to the motor; the transmission belt drags the generator to generate electricity. Each time the "load" button is pressed, a load resistor is connected in parallel to the generator armature circuit, so that the generator load gradually increases, the armature current increases, and the generator electromagnetic torque increases accordingly, that is, the generator load torque (resistance torque) increases, realizing the change of the belt drive load.

[0003] The experimental process of belt drive is as follows: first set a specific driving wheel speed and a specific transmission belt preload, then start with the generator unloaded, gradually increase the generator load torque, observe the transmission belt slip phenomenon, and record the load power (denoted as P), motor torque (denoted as T) one by one. 电 ), motor speed (denoted as n 电 ), generator torque (denoted as T 发 ), generator speed (denoted as n 发 ), calculate the slip ratio and transmission efficiency, slip ratio = (n 电 -n 发 ) / n 电 *100%, transmission efficiency = (T 发 *n 发 ) / (T 电 *n 电 )*100%, and then draw an experimental curve with the load power on the horizontal axis and the slip rate on the vertical axis, and draw an experimental curve with the load power on the horizontal axis and the transmission efficiency on the vertical axis.

[0004] However, the existing belt drive test platform has the following problems:

[0005] First, the generator uses a DC motor. When the load power and the load torque of the generator are gradually increased, the speed of the driving wheel will change and cannot be maintained at the set speed value, resulting in changes in the working conditions of the transmission belt, affecting the accuracy of the slip rate and transmission efficiency curve drawing;

[0006] Second, when the load power is increased step by step, the load power can only be loaded in steps at specific gears, and it is difficult to accurately capture the load power corresponding to the slippage of the transmission belt. This will cause the drawn experimental curve to be inaccurate, and it is difficult to accurately draw the critical point where the transmission belt begins to slip in the slip rate curve, and it is difficult to accurately draw the highest point of the transmission efficiency curve.

[0007] Therefore, further improvements are needed. Summary of the invention

[0008] The first technical problem to be solved by the present invention is to provide a belt drive experimental platform control method capable of improving the accuracy of drawing slip ratio and transmission efficiency curves in view of the current status of the prior art.

[0009] The second technical problem to be solved by the present invention is to provide a belt transmission experimental platform control method that is convenient for accurately capturing the load power corresponding to the slippage of the transmission belt.

[0010] The technical solution adopted by the present invention to solve the above-mentioned first technical problem is: a belt transmission experimental platform control method, characterized in that: the belt transmission experimental platform includes

[0011] The mounting seat has a loading operating member for adjusting the load torque of the passive wheel and a speed regulating operating member for adjusting the speed of the driving wheel;

[0012] A driving wheel is rotatably disposed on a mounting seat;

[0013] A driving wheel servo motor, whose output end is connected to the driving wheel and is used to drive the driving wheel to rotate;

[0014] A driving wheel servo driver is connected to the driving wheel servo motor and is used to control the driving wheel servo motor to be at a preset speed;

[0015] The passive wheel is spaced apart from the active wheel and rotatably arranged on the mounting seat;

[0016] A passive wheel servo motor, whose output end is connected to the passive wheel and is driven by the passive wheel to generate electricity;

[0017] A passive wheel servo driver is connected to the passive wheel servo motor and is used to control the passive wheel servo motor to be at a corresponding load torque;

[0018] The transmission belt is annular and is sleeved on the outer circumference of the driving wheel and the driven wheel;

[0019] A main controller, wherein a first input end thereof is connected to the loading operating member, a second input end thereof is connected to the speed regulating operating member, a first output end thereof is communicatively connected to the driving wheel servo driver, and a second output end thereof is communicatively connected to the driven wheel servo driver;

[0020] The control method comprises the following steps:

[0021] Step S1: putting the transmission belt under a preset preload;

[0022] Step S2: the user manually operates to place the loading operating member in the initial position, and manually operates to place the speed regulating operating member in the initial position;

[0023] Step S3: the main controller sends a command to the driving wheel servo driver, and the driving wheel servo driver determines whether the actual speed of the driving wheel servo motor is equal to the preset speed value corresponding to the speed regulating operating element in step S2. If so, the process proceeds to step S4. If not, the driving wheel servo driver controls the driving wheel servo motor so that the speed of the driving wheel servo motor is at the preset speed value corresponding to the speed regulating operating element in step S2, and the process returns to step S3.

[0024] Step S4: the driving wheel servo driver reads the rotation speed of the driving wheel servo motor and the torque of the driving wheel servo motor, and sends the data to the main controller;

[0025] The passive wheel servo driver reads the rotation speed of the passive wheel servo motor and the torque of the passive wheel servo motor, and sends the data to the main controller;

[0026] The main controller records the load power corresponding to the loading operating member, the speed of the driving wheel servo motor, the torque of the driving wheel servo motor, the speed of the passive wheel servo motor, and the load torque value of the passive wheel servo motor, which is a set of data;

[0027] Step S5: the user manually operates the loading operating member to increase the load power;

[0028] Step S6: the main controller sends a command to the passive wheel servo driver, and the passive wheel servo driver determines whether the actual load torque of the passive wheel servo motor corresponds to the preset value of the load power set by the loading operating member in step S5. If so, the process proceeds to step S4. If not, the passive wheel servo driver controls the passive wheel servo motor so that the load torque of the passive wheel servo motor is at the preset corresponding value of the load power of the loading operating member in step S5, and the process returns to step S6.

[0029] Step S7: repeating steps S5 to S6;

[0030] When the number of data groups recorded in step S4 reaches the user's expectation, and these data include data before and after the transmission belt slips, then proceed to step S8;

[0031] Step S8: Based on the recorded data in step S4, the user or the main controller calculates the slip rate and the transmission efficiency, draws an experimental curve with the horizontal axis being the load power and the vertical axis being the slip rate, and draws an experimental curve with the horizontal axis being the load power and the vertical axis being the transmission efficiency.

[0032] In order to facilitate users to see the corresponding data, the belt transmission experimental platform also includes

[0033] The display panel is located on the front side of the mounting base, connected to the third output terminal of the main controller, and is used to respectively display the load power corresponding to the loading operating member, the speed of the driving wheel servo motor, the torque of the driving wheel servo motor, the speed of the passive wheel servo motor, and the load torque value of the passive wheel servo motor.

[0034] In order to measure the preload of the transmission belt, the belt transmission experimental platform also includes

[0035] The force transmission rod is relatively fixed to the passive wheel;

[0036] The pressure sensor is arranged on the mounting seat and is acted upon by the force transmission rod to measure the preload force of the transmission belt.

[0037] In order to further solve the second technical problem of the present application, preferably, the loading operating member adopts a knob structure for stepless adjustment.

[0038] By setting the knob structure, the gear position is more subdivided and more precise, so that the load power corresponding to the beginning of the transmission belt slipping can be accurately captured. The experimental curve drawn in this way is more accurate, and the critical point where the transmission belt begins to slip in the slip rate curve can be accurately drawn, and the highest point of the transmission efficiency curve can be accurately drawn.

[0039] The structure for adjusting the preload force of the transmission belt is specifically that the belt transmission experimental platform also includes

[0040] A slide table is arranged on at least one of the driving wheel and the passive wheel;

[0041] A screw rod is rotatably disposed on a mounting seat;

[0042] The nut seat is fixed to the slide and movably constrained on the screw rod, and can drive the corresponding slide to move under the rotation of the screw rod, thereby adjusting the preload of the transmission belt;

[0043] The driving member is connected to the end of the screw rod and is used to drive the screw rod to rotate.

[0044] In step S1, the pre-tensioning force of the transmission belt is adjusted by moving the slide. The movement of the slide drives the driving wheel to move relatively closer to or farther away from the driven wheel, thereby changing the pre-tensioning force of the transmission belt.

[0045] For ease of use, the driving member adopts a driving motor, and the output end of the driving motor is drivingly connected to the end of the screw rod.

[0046] In order to reserve an alternative solution, the driving member adopts a rotating handle, and the output end of the rotating handle is connected to the end of the screw rod. In this way, it can also be driven by the rotating handle.

[0047] In order to guide the movement of the slide, the belt drive experimental platform also includes

[0048] A guide shaft is arranged on the mounting seat and extends along the moving direction of the slide;

[0049] The guide block is fixed to the corresponding slide table and is movably sleeved on the outer periphery of the guide shaft so as to be movable along the axial direction of the guide shaft.

[0050] Compared with the prior art, the advantages of the present invention are: by replacing the existing DC motor with a driving wheel servo motor and a passive wheel servo motor, a driving wheel servo driver, a passive wheel servo driver and a main controller are further provided, the driving wheel servo motor and the passive wheel servo motor have fast response speeds, for the driving wheel, the driving wheel servo driver works in a speed mode, and the speed of the driving wheel servo motor can be stabilized at a preset value through closed-loop feedback with the main controller, for the passive wheel, the passive wheel servo driver works in a torque mode, and the load torque of the passive wheel servo motor can be stabilized at a preset value through closed-loop feedback with the main controller, and when the load power is continuously increased, the experimental data of the speed of the driving wheel servo motor, the torque of the driving wheel servo motor, the speed of the passive wheel servo motor and the load torque of the passive wheel servo motor measured are more accurate, which is conducive to accurately calculating the slip rate and transmission efficiency, and is conducive to accurately drawing the experimental curve. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 A schematic diagram of a belt transmission experimental platform according to an embodiment of the present invention;

[0052] Figure 2 for Figure 1 Schematic diagram of the belt drive experimental platform without the cover;

[0053] Figure 3 for Figure 2 Schematic diagram of the belt drive experimental platform after removing the driving wheel and transmission belt;

[0054] Figure 4 for Figure 1 Schematic diagram of the belt drive experimental platform as seen from the back;

[0055] Figure 5 for Figure 4 Schematic diagram from another angle;

[0056] Figure 6 A schematic diagram of a flow chart of an embodiment of the present invention;

[0057] Figure 7 The figure is a schematic diagram of the relationship among the main controller, the driving wheel servo driver, the passive wheel servo driver, the driving wheel servo motor, and the passive wheel servo motor according to an embodiment of the present invention. DETAILED DESCRIPTION

[0058] The present invention is further described in detail below with reference to the accompanying drawings.

[0059] Example 1

[0060] See also Figure 1 to Figure 5 , which is a preferred embodiment of the belt transmission experimental platform of the present invention.

[0061] The belt drive experimental platform includes a mounting seat 1, a driving wheel 2, a driving wheel servo motor 3, a driving wheel servo driver 10, a passive wheel 4, a passive wheel servo motor 5, a passive wheel servo driver 20, a transmission belt 6, a main controller 30, a display panel 40, a force transmission rod 200, a pressure sensor 100, a slide 300, a screw rod 400, a nut seat 500, a driving member 600, a guide shaft 700, a guide block 800 and other main components.

[0062] Among them, see Figure 1 The mounting seat 1 has a loading operating member 11 for adjusting the load torque of the passive wheel 4 and a speed regulating operating member 12 for adjusting the rotation speed of the driving wheel 2; the loading operating member 11 and the speed regulating operating member 12 adopt a button structure, and can also be replaced by a knob or other structure.

[0063] The driving wheel 2 is rotatably arranged on the mounting seat 1 .

[0064] The output end of the driving wheel servo motor 3 is connected to the driving wheel 2 and is used to drive the driving wheel 2 to rotate. The driving wheel servo motor 3 is supported and in a suspended state.

[0065] See also Figure 7 The driving wheel servo driver 10 is connected to the driving wheel servo motor 3 and is used to control the driving wheel servo motor 3 to be at a preset speed.

[0066] The passive wheel 4 and the driving wheel 2 are spaced apart and rotatably arranged on the mounting base 1. The passive wheel 4 and the driving wheel 2 are both covered with a cover 50 for preventing the transmission belt 6 from slipping off. The diameter of the passive wheel 4 and the driving wheel 2 is the same.

[0067] The output end of the passive wheel servo motor 5 is connected to the passive wheel 4, and is driven by the passive wheel 4 to generate electricity. The passive wheel servo motor 5 is supported and in a suspended state.

[0068] See also Figure 7 The passive wheel servo driver 20 is connected to the passive wheel servo motor 5 and is used to control the passive wheel servo motor 5 to be at a corresponding load torque.

[0069] The transmission belt 6 is annular and is sleeved on the outer circumference of the driving wheel 2 and the driven wheel 4 .

[0070] See also Figure 7The main controller 30 has a first input end connected to the loading operating member 11, a second input end connected to the speed regulating operating member 12, a first output end connected to the driving wheel servo driver 10, and a second output end connected to the driven wheel servo driver 20.

[0071] The display panel 40 is located on the front side of the mounting base 1, connected to the third output terminal of the main controller 30, and is used to respectively display the load power corresponding to the loading operating member 11, the speed of the driving wheel servo motor 3, the torque of the driving wheel servo motor 3, the speed of the passive wheel servo motor 5, and the load torque value of the passive wheel servo motor 5.

[0072] The force transmission rod 200 is relatively fixed to the passive wheel 4 .

[0073] The pressure sensor 100 is arranged on the mounting seat 1 and is used to measure the preload force of the transmission belt 6 under the action of the force transmission rod 200 .

[0074] The slide 300 is disposed on at least one of the driving wheel 2 and the passive wheel 4. In this embodiment, the slide 300 is disposed on both the driving wheel 2 and the passive wheel 4. Figure 2 In order to limit the left and right movement of the slide 300, the slide 300 has a limit column 301 extending forward and backward, and the mounting seat 1 has a first limit hole 13 extending left and right for the limit column 301 to extend into at a corresponding position. Figure 3 The mounting seat 1 is also provided with a second limiting hole 14 at a corresponding position for the rotating shafts of the driving wheel 2 and the driven wheel 4 to pass through and extending left and right.

[0075] The screw rod 400 is rotatably disposed on the mounting seat 1 .

[0076] The nut seat 500 is fixed to the slide 300 and is movably constrained on the screw rod 400 , and can drive the corresponding slide 300 to move under the rotation of the screw rod 400 , thereby adjusting the preload force of the transmission belt 6 .

[0077] The driving member 600 is drivingly connected to the end of the screw rod 400 and is used to drive the screw rod 400 to rotate.

[0078] In step S1 , the preload force of the transmission belt 6 is adjusted by moving the slide 300 . The slide 300 moves to drive the driving wheel 2 to move relatively closer to or farther away from the driven wheel 4 , thereby changing the preload force of the transmission belt 6 .

[0079] The driving member 600 is a rotating handle, the output end of which is drivingly connected to the end of the screw rod 400. Alternatively, the driving member 600 is a driving motor, the output end of which is drivingly connected to the end of the screw rod 400.

[0080] The guide shaft 700 is disposed on the mounting seat 1 and extends along the moving direction of the slide table 300 .

[0081] The guide block 800 is fixed to the corresponding slide table 300 , and is movably sleeved on the outer periphery of the guide shaft 700 so as to be movable along the axial direction of the guide shaft 700 .

[0082] See also Figure 6 , Figure 7 , the control method of the belt transmission experimental platform comprises the following steps:

[0083] Step S1: putting the transmission belt 6 under a preset preload;

[0084] Step S2: The user manually operates the loading operating member 11 to be in the initial position, and manually operates the speed regulating operating member 12 to be in the initial position;

[0085] Step S3: the main controller 30 sends a command to the driving wheel servo driver 10, and the driving wheel servo driver 10 determines whether the actual speed of the driving wheel servo motor 3 is equal to the preset speed value corresponding to the speed regulating operating member 12 in step S2. If so, it proceeds to step S4. If not, the driving wheel servo driver 10 controls the driving wheel servo motor 3 so that the speed of the driving wheel servo motor 3 is at the preset speed value corresponding to the speed regulating operating member 12 in step S2, and returns to step S3; the speed is measured by using an existing photoelectric sensor;

[0086] Step S4: the driving wheel servo driver 10 reads the rotation speed of the driving wheel servo motor 3 and the torque of the driving wheel servo motor 3, and sends the data to the main controller 30;

[0087] The passive wheel servo driver 20 reads the rotation speed of the passive wheel servo motor 5 and the torque of the passive wheel servo motor 5 and sends the data to the main controller 30;

[0088] The main controller 30 records the load power corresponding to the loading operating member 11, the speed of the driving wheel servo motor 3, the torque of the driving wheel servo motor 3, the speed of the passive wheel servo motor 5, and the load torque value of the passive wheel servo motor 5, which is a set of data;

[0089] Step S5: the user manually operates the loading operating member 11 to increase the load power;

[0090] Step S6: the main controller 30 sends a command to the passive wheel servo driver 20, and the passive wheel servo driver 20 determines whether the actual load torque of the passive wheel servo motor 5 corresponds to the preset value of the load power set by the loading operating member 11 in step S5. If so, the process proceeds to step S4. If not, the passive wheel servo driver 20 controls the passive wheel servo motor 5 so that the load torque of the passive wheel servo motor 5 is at the preset corresponding value of the load power of the loading operating member 11 in step S5, and the process returns to step S6.

[0091] Step S7: repeat steps S5 to S6;

[0092] When the number of data groups recorded in step S4 reaches the user's expectation (the number of groups expected by the user refers to the amount of data expected by the user when drawing the experimental curve), and these data include data before and after the transmission belt 6 slips, then step S8 is entered; the determination of whether the transmission belt 6 has slipped is a prior art;

[0093] Step S8: Based on the recorded data in step S4, the user or the main controller 30 calculates the slip rate and the transmission efficiency, and draws an experimental curve with the load power as the abscissa and the slip rate as the ordinate, and draws an experimental curve with the load power as the abscissa and the transmission efficiency as the ordinate. Slip rate = (driving wheel motor speed - driven wheel motor speed) / driving wheel motor speed * 100%, transmission efficiency = (driven wheel servo torque * driven wheel motor speed) / (driving wheel servo torque * driving wheel motor speed) * 100%.

[0094] Example 2

[0095] The structure of the belt drive test platform of this embodiment is basically the same as that of the belt drive test platform of embodiment 1, except that the structure of the loading operating member 11 is different. In this embodiment, the loading operating member 11 adopts a knob structure for stepless adjustment. In this way, the gear position is more subdivided and more precise, so that the load power corresponding to the beginning of the transmission belt slipping can be accurately captured. In this way, the experimental curve drawn is more accurate, and the critical point of the beginning of the transmission belt slipping in the slip rate curve can be accurately drawn, and the highest point of the transmission efficiency curve can be accurately drawn.

[0096] In summary, by adopting the driving wheel servo motor 3, the driving wheel servo driver 10, the passive wheel servo motor 5, the passive wheel servo driver 20, and the main controller 30 in the mechanical structure, the loading operating part 11 adopts a knob structure for stepless adjustment, and a matching control method is designed to perform closed-loop feedback on the rotational speed and load torque. This can improve the accuracy of drawing the slip rate and transmission efficiency curves, and can also accurately capture the load power corresponding to the slip of the transmission belt 6, thereby accurately drawing the critical point where the transmission belt starts to slip in the slip rate curve, and accurately drawing the highest point of the transmission efficiency curve.

Claims

1. A belt drive experimental platform control method, characterized in that: The belt transmission experimental platform comprises The mounting seat (1) has a loading operating member (11) for adjusting the load torque of the passive wheel (4) and a speed regulating operating member (12) for adjusting the rotation speed of the driving wheel (2); A driving wheel (2) is rotatably mounted on the mounting seat (1); A driving wheel servo motor (3), the output end of which is connected to the driving wheel (2) and is used to drive the driving wheel (2) to rotate; A driving wheel servo driver (10) is connected to the driving wheel servo motor (3) and is used to control the driving wheel servo motor (3) to be at a preset speed; The passive wheel (4) is spaced apart from the active wheel (2) and is rotatably disposed on the mounting seat (1); A passive wheel servo motor (5), the output end of which is connected to the passive wheel (4) and is driven by the passive wheel (4) to generate electricity; A passive wheel servo driver (20) is connected to the passive wheel servo motor (5) and is used to control the passive wheel servo motor (5) to be at a corresponding load torque; The transmission belt (6) is annular and is sleeved on the outer circumference of the driving wheel (2) and the driven wheel (4); A main controller (30), wherein a first input end thereof is connected to the loading operating member (11), a second input end thereof is connected to the speed regulating operating member (12), a first output end thereof is communicatively connected to the driving wheel servo driver (10), and a second output end thereof is communicatively connected to the driven wheel servo driver (20); The control method comprises the following steps: Step S1: putting the transmission belt (6) under a preset preload; Step S2: the user manually operates to place the loading operating member (11) in the initial position, and manually operates to place the speed regulating operating member (12) in the initial position; Step S3: the main controller (30) sends a command to the driving wheel servo driver (10), and the driving wheel servo driver (10) determines whether the actual rotation speed of the driving wheel servo motor (3) is equal to the rotation speed preset value corresponding to the speed regulating operating element (12) in step S2. If so, the process proceeds to step S4. If not, the driving wheel servo driver (10) controls the driving wheel servo motor (3) so that the rotation speed of the driving wheel servo motor (3) is at the rotation speed preset value corresponding to the speed regulating operating element (12) in step S2, and the process returns to step S3. Step S4: the driving wheel servo driver (10) reads the rotation speed of the driving wheel servo motor (3) and the torque of the driving wheel servo motor (3), and sends the data to the main controller (30); The passive wheel servo driver (20) reads the rotation speed of the passive wheel servo motor (5) and the torque of the passive wheel servo motor (5), and sends the data to the main controller (30); The main controller (30) records the load power corresponding to the loading operating member (11), the rotation speed of the driving wheel servo motor (3), the torque of the driving wheel servo motor (3), the rotation speed of the passive wheel servo motor (5), and the load torque value of the passive wheel servo motor (5), which is a set of data; Step S5: the user manually operates the loading operating member (11) to increase the load power; Step S6: the main controller (30) sends a command to the passive wheel servo driver (20), and the passive wheel servo driver (20) determines whether the actual load torque of the passive wheel servo motor (5) corresponds to the preset value of the load power set by the loading operating member (11) in step S5. If so, the process proceeds to step S4. If not, the passive wheel servo driver (20) controls the passive wheel servo motor (5) so that the load torque of the passive wheel servo motor (5) is at the preset corresponding value of the load power of the loading operating member (11) in step S5, and the process returns to step S6. Step S7: repeating steps S5 to S6; When the number of data sets recorded in step S4 reaches the user's expectation, and these data include data before and after the transmission belt (6) slips, then the process proceeds to step S8; Step S8: Based on the recorded data in step S4, the user or the main controller (30) calculates the slip ratio and the transmission efficiency, draws an experimental curve with the load power as the horizontal axis and the slip ratio as the vertical axis, and draws an experimental curve with the load power as the horizontal axis and the transmission efficiency as the vertical axis.

2. The belt drive experimental platform control method according to claim 1, characterized in that: The belt transmission experimental platform also includes The display panel (40) is located at the front side of the mounting seat (1), is connected to the third output terminal of the main controller (30), and is used to respectively display the load power corresponding to the loading operating member (11), the rotation speed of the driving wheel servo motor (3), the torque of the driving wheel servo motor (3), the rotation speed of the driven wheel servo motor (5), and the load torque value of the driven wheel servo motor (5).

3. The control method according to claim 1, characterized in that: The belt drive experimental platform also includes a force transmission rod (200) fixed relatively to the passive wheel (4); The pressure sensor (100) is arranged on the mounting seat (1) and is acted upon by the force transmission rod (200) to measure the pre-tightening force of the transmission belt (6).

4. The control method according to claim 1, characterized in that: The loading operating member (11) adopts a knob structure for stepless adjustment.

5. The control method according to claim 1, characterized in that: The belt transmission experimental platform also includes A slide table (300) is arranged on at least one of the driving wheel (2) and the driven wheel (4); A screw rod (400) is rotatably disposed on the mounting seat (1); The nut seat (500) is fixed to the slide table (300) and is movably constrained on the screw rod (400), and can drive the corresponding slide table (300) to move under the rotation of the screw rod (400), thereby adjusting the preload force of the transmission belt (6); The driving member (600) is drivingly connected to the end of the screw rod (400) and is used to drive the screw rod (400) to rotate.

6. The control method according to claim 5, characterized in that: The driving member (600) is a driving motor, the output end of which is drivingly connected to the end of the screw rod (400).

7. The control method according to claim 5, characterized in that: The driving member (600) is a rotating handle, the output end of which is drivingly connected to the end of the screw rod (400).

8. The control method according to claim 5, characterized in that: The belt drive experimental platform also includes a guide shaft (700) which is arranged on the mounting seat (1) and extends along the moving direction of the slide table (300); The guide block (800) is fixed to the corresponding slide table (300) and is movably sleeved on the outer periphery of the guide shaft (700) so as to be movable along the axial direction of the guide shaft (700).

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