Non-automatic teaching type mechanical control engineering experiment table

Abstract

The utility model provides a non-automatic teaching type mechanical control engineering experiment table, which comprises a supporting table, and a power unit, a transmission unit, a coding unit, a braking unit, a safety control unit and a display unit which are arranged on the supporting table, the power unit and the coding unit are arranged in parallel and are connected through the transmission unit; the braking unit has a damping structure and is connected with the coding unit; the safety control unit is mounted on the power unit and is electrically connected with the power unit; the coding unit is connected with the display unit through signal transmission. Power needed by theoretical verification is provided through the power unit, the power is transmitted to the coding unit through the transmission unit, and the coding unit transmits information of the power to the display unit after obtaining the power, so that experimenters can watch the information conveniently and know a theoretical verification result. In order to prevent dangers in the experiment process, the braking unit can adjust the rotating speed of the encoding unit, and the safety control unit can conduct emergency braking on the power unit at the dangerous moment.

Description

Technical Field

[0001] This utility model relates to the field of automation technology, specifically a non-automated teaching-type mechanical control engineering experimental platform. Background Technology

[0002] Currently, experiments in mechanical control engineering courses generally involve time-domain and frequency-domain experiments on electrical systems, and some use Simulink in MATLAB for simulation experiments. However, there are no experimental devices for verifying the control theory of physical mechanical equipment and devices.

[0003] Existing experimental verification methods using electrical systems and MATLAB simulations hinder mechanical engineering students' understanding of the application of control theory in mechanical engineering. To better demonstrate the application of control theory in mechanical engineering and facilitate students' comprehension of the theoretical knowledge learned in mechanical control engineering courses, this paper proposes a method.

[0004] Therefore, there is an urgent need to develop a new type of experimental device that can be verified through the control theory of mechanical equipment and devices. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of this utility model is to provide a non-automated teaching type mechanical control engineering experimental platform, which is an experimental device that can verify the control theory of mechanical equipment and mechanical devices.

[0006] To achieve the above objectives, this utility model provides a non-automated teaching type mechanical control engineering experimental platform, including a support platform, and a power unit, a transmission unit, an encoding unit, a braking unit, a safety control unit, and a display unit installed on the support platform;

[0007] The power unit and the coding unit are arranged in parallel, respectively located on both sides of the support platform;

[0008] The output of the power unit is fixedly connected to the driving end of the transmission unit, and the input of the encoding unit is fixedly connected to the driven end of the transmission unit.

[0009] The braking unit has a damping structure and is installed on the input section of the encoding unit;

[0010] The safety control unit is installed on the power unit and is electrically connected to the power unit;

[0011] The encoding unit and the display unit are connected via signal transmission.

[0012] Preferably, the power unit includes a motor and a motor bracket;

[0013] The motor bracket is fixedly installed on the lower side of the motor;

[0014] The motor is fixedly mounted on the support platform by the motor bracket and bolts;

[0015] The output shaft end of the motor is fixedly connected to the driving end of the transmission unit.

[0016] Preferably, the transmission unit includes a driving pulley, a toothed belt, a driven pulley, and an auxiliary pulley;

[0017] The drive pulley is fixedly connected to the output section of the power unit;

[0018] The driven wheel is fixedly connected to the input section of the encoding unit;

[0019] The support platform extends vertically upwards with a mounting plate.

[0020] The auxiliary wheel is rotatably mounted on the upper end of the mounting plate;

[0021] The brake pulley and the driven pulley are located on opposite sides of the mounting plate;

[0022] The toothed belt is wound around the driving pulley, the driven pulley, and the auxiliary pulley in a clockwise direction in sequence, forming a triangular structure.

[0023] Preferably, the transmission unit further includes a tension wheel bracket, a swing arm, and a tension wheel arranged in sequence;

[0024] The tension wheel bracket is fixedly installed on the support platform;

[0025] One end of the swing arm is fixedly installed to the tension wheel bracket;

[0026] The swing arm is an elastic rod;

[0027] The tension wheel is rotatably mounted on the other end of the rocker arm, and the outer periphery of the tension wheel abuts against the outer side of the toothed belt.

[0028] Preferably, the auxiliary wheel is also provided with multiple weight pans;

[0029] The multiple weight pans are evenly distributed at equal angles around the rotation axis of the auxiliary wheel.

[0030] Preferably, the encoding unit includes an encoder, an encoder bracket, and a coupling arranged in sequence;

[0031] The encoder bracket is fixedly installed on the support platform;

[0032] The encoder is fixedly mounted on the encoder bracket;

[0033] The input end of the encoder passes through the encoder support frame and is fixedly connected to one end of the coupling;

[0034] The other end of the coupling is fixedly connected to the driven end of the transmission unit;

[0035] The encoder, the coupling, and the driven end of the transmission unit are arranged coaxially.

[0036] Preferably, the braking unit includes a magnetic powder brake and a magnetic powder brake bracket;

[0037] The magnetic powder brake bracket is fixedly installed on the support platform;

[0038] The magnetic powder brake and the encoding unit are located on both sides of the magnetic powder brake bracket, respectively.

[0039] The output end of the magnetic powder brake passes through the magnetic powder brake bracket and is fixedly connected to the coupling.

[0040] The output end of the magnetic powder brake and the coupling are arranged coaxially.

[0041] Preferably, the safety control unit includes a relay;

[0042] The relay is mounted on the power unit and is electrically connected to the power unit via a wire.

[0043] Preferably, the relay is also electrically connected to the braking unit via a wire.

[0044] Preferably, the temperature sensor is installed at the output end of the power unit.

[0045] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0046] This invention provides a non-automated teaching-type mechanical control engineering experimental platform, including a support platform, and a power unit, a transmission unit, an encoding unit, a braking unit, a safety control unit, and a display unit mounted on the support platform. The power unit and the encoding unit are arranged parallel to each other, located on opposite sides of the support platform. The output of the power unit is fixedly connected to the driving end of the transmission unit, and the input of the encoding unit is fixedly connected to the driven end of the transmission unit. The braking unit has a damping structure and is mounted on the input of the encoding unit. The safety control unit is mounted on the power unit and electrically connected to it. The encoding unit and the display unit are connected via signal transmission. This device provides the power required for theoretical verification through the power unit and transmits the power to the encoding unit through the transmission unit. After receiving the power, the encoding unit transmits the power information to the display unit, allowing experimental personnel to view the information and understand the theoretical verification results. To prevent danger during the experiment, the braking unit can adjust the rotational speed of the encoding unit, and the safety control unit can apply emergency braking to the power unit in case of danger. Attached Figure Description

[0047] Figure 1 A front view schematic diagram of the power unit, transmission unit, encoding unit, braking unit, and safety control unit of the experimental platform provided by this utility model;

[0048] Figure 2 A top view of the power unit, transmission unit, encoding unit, braking unit, and safety control unit of the experimental platform provided by this utility model;

[0049] Figure 3 A side view of the power unit, transmission unit, encoding unit, braking unit, and safety control unit of the experimental platform provided by this utility model;

[0050] Figure 4 A schematic diagram of the front view of the experimental platform provided by this utility model without a rectangular outer shell;

[0051] Figure 5 A top view of the experimental platform provided by this utility model without a rectangular outer shell;

[0052] Figure 6 A side view of the experimental platform provided by this utility model without a rectangular outer shell;

[0053] Figure 7 A schematic diagram of the main structure of the experimental platform provided by this utility model;

[0054] Figure 8 A schematic diagram of the main structure of the experimental platform provided by this utility model;

[0055] Figure 9 A schematic diagram of the main structure of the experimental platform provided by this utility model;

[0056] The components include: 1. Motor; 2. Motor bracket; 3. Drive pulley; 4. Toothed belt; 5. Tensioner bracket; 6. Swing arm; 7. Tensioner; 8. Magnetic powder brake bracket; 9. Magnetic powder brake; 10. Encoder bracket; 11. Coupling; 12. Encoder; 13. Driven wheel; 14. Auxiliary wheel; 15. Weight pan; 16. Relay; 17. Temperature sensor; 18. Industrial all-in-one machine; 19. Support platform; 20. Electrical control box; 21. Double-leaf safety door. Detailed Implementation

[0057] To better understand this utility model, the following description, in conjunction with the accompanying drawings and examples, will further illustrate its contents.

[0058] This invention provides a non-automated teaching-type mechanical control engineering experimental platform. A power unit provides the power needed for theoretical verification, and a transmission unit transmits this power to an encoding unit. The encoding unit then transmits the power information to a display unit, allowing experimenters to view the information and understand the theoretical verification results. To prevent danger during the experiment, this invention includes a braking unit that can adjust the rotational speed of the encoding unit, and a safety control unit that can apply emergency braking to the power unit in dangerous situations.

[0059] Example:

[0060] This utility model patent provides a non-automated teaching-type mechanical control engineering experimental platform, such as... Figure 1 and Figure 2 As shown, it includes a support platform 19, and a power unit, a transmission unit, an encoding unit, a braking unit, a safety control unit, and a display unit mounted on the support platform 19; the output of the power unit and the input of the encoding unit are arranged parallel to each other and are connected by transmission through the transmission unit; the braking unit has a damping structure and is mounted on the input of the encoding unit; the safety control unit is mounted on the power unit and is electrically connected to the power unit; the encoding unit and the display unit are connected by signal transmission.

[0061] In this embodiment, as Figure 4 and Figure 5 As shown, the support platform 19 has a square tabletop, on which a rectangular shell with a length equal to the side length of the square tabletop but a width shorter than the side length of the square tabletop is placed. A double protective door 21 is provided on the long side of the rectangular shell, and the double protective door 21 is aligned with the edge of the square tabletop. During the experiment, the experimenter faces the double protective door 21 and operates the test platform and reads information by opening the double protective door 21.

[0062] For ease of description, this embodiment uses the example of an experimenter facing the double protective door 21. Figure 7 and Figure 8 As shown, the left side of the experimenter is left, and the right side is right; in front of the experimenter, the one closer to the experimenter is front, and the one farther away from the experimenter is back; in the up and down direction, the height direction is used as the reference, with the higher one being up and the lower one being down.

[0063] The rectangular casing is divided into left and right sections by the double-leaf protective door 21. The power unit, transmission unit, encoding unit, braking unit, and safety control unit are all installed on the left side of the rectangular casing. In this embodiment, the power unit and encoding unit are located on the left and right sides respectively, and the braking unit is located in front of the encoding unit. The display unit is installed on the right side of the rectangular casing.

[0064] like Figure 3 As shown, the power unit includes a motor 1 and a motor bracket 2; the specific structure of the motor bracket 2 is not limited, as long as it can realize the function of mounting the motor 1 on the support platform 19. In this embodiment, the motor bracket 2 is selected as a mounting base that is welded or integrally formed onto the motor 1, and is installed on the table of the support platform 19 by bolts and nuts. Moreover, the axis of the motor 1 main shaft is perpendicular to the double-leaf protective door 21 in the closed state.

[0065] The safety control unit includes a relay 16, which is fixedly mounted on the motor 1 body and electrically connected to the motor 1 via a wire. When the emergency stop button on the relay 16 is triggered, the power supply to the motor 1 is immediately cut off, stopping the power output and preventing mechanical overload or loss of control caused by the continuous operation of the motor 1.

[0066] The encoding unit includes an encoder 12, an encoder bracket 10, and a coupling 11 arranged sequentially from back to front. In this embodiment, the horizontal cross-section of the encoder bracket 10 is a U-shaped structure with the opening facing forward. The coupling 11 is located inside the U-shaped structure, and the encoder 12 is located outside the U-shaped structure. A connecting plate is welded to the lower part of the encoder bracket 10 and is bolted to the support platform 19. The axes of the encoder 12 and the coupling 11 are collinear. The encoder 12 is mounted on the encoder bracket 10, and the input end of the encoder 12 passes through the encoder bracket 10 and connects to the coupling 11. The end of the coupling 11 away from the encoder 12 is fixedly connected to the transmission unit and the braking unit and rotates synchronously.

[0067] The braking unit includes a magnetic powder brake bracket 8 and a magnetic powder brake 9. In this embodiment, the structure of the magnetic powder brake bracket 8 is the same as that of the encoder bracket 10, and the openings face the same direction. The output end of the magnetic powder brake 9 extends rearward from the inside of the magnetic powder brake bracket 8 and is fixedly connected to the coupling 11. The relay 16 is also electrically connected to the magnetic powder brake 9. When the emergency stop button on the relay 16 is triggered, it controls the magnetic powder brake 9 to unload the braking torque, eliminate the residual inertial torque in the transmission system, and prevent damage to mechanical components (such as the coupling 11 and pulleys) caused by inertial impact during emergency stops. The magnetic powder brake 9 can linearly control the output torque by adjusting the excitation current; it functions as a clutch to transmit power and as a brake to consume kinetic energy, achieving rapid start and stop; it provides overload protection, where the magnetic powder slips when the load exceeds the set torque to avoid mechanical damage; and it provides buffering and speed regulation, absorbing impact loads and smoothly adjusting the speed to achieve high-precision motion control.

[0068] An L-shaped plate extends vertically from the tabletop of the support platform 19, with the horizontal plate of the L-shape positioned above the vertical plate and extending to the right. The L-shaped plate is located between the transmission unit and the encoding unit. The transmission unit includes a drive pulley 3, a toothed belt 4, a driven pulley 13, and an auxiliary pulley 14. The drive pulley 3 is fixedly connected to the main shaft of the motor 1 via a key. A rotating shaft passes through the center of the driven pulley 13. The rear end of the transmission shaft passes through the lower end of the vertical plate of the L-shape and is fixedly connected to the coupling 11. The front end passes through the magnetic powder brake bracket 8 and is fixedly connected to the magnetic powder brake 9. The auxiliary pulley 14 is installed at the right end of the horizontal plate of the L-shape. The toothed belt 4 is tightly wound around the drive pulley 3, driven pulley 13, and auxiliary pulley 14, causing them to rotate synchronously.

[0069] To prevent slippage or suboptimal transmission between the driving pulley 3, driven pulley 13, and auxiliary pulley 14 and the toothed belt 4, the transmission unit also includes a tensioning assembly, specifically comprising a tensioning pulley bracket 5, a rocker arm 6, and a tensioning pulley 7 arranged sequentially. The tensioning pulley bracket 5 is fixedly mounted on the support platform 19, and a groove extending from the upper left to the lower right is formed on the tensioning pulley bracket 5. The right end of the rocker arm 6 is inserted into the groove, and the rocker arm 6 is an elastic rod, providing elastic force that meets the tension requirements for the toothed belt 4 in this application. The tensioning pulley 7 is rotatably mounted on the right end of the rocker arm 6, and its outer circumference abuts against the outer side of the toothed belt 4, adjusting the tension of the toothed belt 4 to change the system's damping and elasticity.

[0070] A weight tray 15 mounting base is fixedly mounted coaxially with the auxiliary wheel 14, and multiple weight trays 15 are provided on the mounting base to hold weights. The size of the weight trays 15 is adjustable, capable of accommodating weights of different sizes and masses to change the rotational inertia of the system. The multiple weight trays 15 are evenly distributed at equal angles along the rotation center of the auxiliary wheel 14. In this embodiment, the weight trays 15 are designed to be detachable.

[0071] At the same time, an encoder 12 is also installed on the motor 1, which can be combined with the real-time comparison function of the motion controller to eliminate the cumulative error caused by belt elastic deformation or slippage.

[0072] To prevent motor 1 from overheating and being damaged, a temperature sensor 17 is attached to the surface of motor 1 to detect the temperature of motor 1. It is electrically connected to the power control unit. When the temperature of motor 1 is too high, the temperature sensor 17 sends a signal to the power control unit, and the power switch is activated to cut off the power.

[0073] like Figure 6 and Figure 9 As shown, the power control unit includes an electrical control box 20, which is placed behind the support platform 19 and outside the rectangular housing for easy operation.

[0074] A power supply is also arranged at the rear of the support platform 19. The power supply is electrically connected to the electrical control box 20 through wires to supply power to the motor 1 and the display unit.

[0075] The display unit includes an industrial all-in-one machine 18, used to display the error information.

[0076] Working principle: The support platform 19 supports the entire experimental device. The motor 1 is mounted on the support platform 19 through the motor bracket 2 and connected to the drive pulley 3. When the motor 1 rotates, it drives the drive pulley 3 to rotate. The drive pulley 3 drives the driven pulley 13 and the auxiliary pulley 14 to rotate through the toothed belt 4. The rotation of the driven pulley 13 and the auxiliary pulley 14 drives the weight pan 15 to rotate through the shaft. The encoder 12 is connected to the driven pulley 13 through the coupling 11 to detect the rotation angle of the driven pulley 13. The encoder 12 is mounted on the support platform 19 through the encoder bracket 10. The encoder 12 transmits the rotation angle of the driven pulley 13 to the controller. The controller compares the results and displays the error and other related information on the industrial all-in-one machine 18pc terminal.

[0077] In this embodiment, the non-automated teaching-type mechanical control engineering experimental platform consists of a servo motor 1, an encoder 12, a temperature controller, a magnetic powder brake 9, a weight pan 15, a relay 16, and other mechanisms. Experiments that can be performed on the non-automated teaching-type mechanical control engineering experimental platform include, but are not limited to: time-domain experiments; step response testing, which involves rapidly changing the excitation current to apply an instantaneous torque step, triggering the transient response of the motor 1 and the transmission mechanism, and measuring its response time, overshoot, and steady-state error; impact load simulation, which simulates sudden load application / removal in the mechanical motion control experimental platform to verify the system's anti-interference capability and dynamic stability; damping characteristic testing, which involves adjusting the torque of the magnetic powder brake 9 to change the system's equivalent damping coefficient and analyze the influence of the damping ratio on the vibration decay rate; and energy dissipation control, which tests the system's emergency braking performance by rapidly dissipating kinetic energy through the brake during emergency stops or reverse movements. Frequency domain experiments include: sinusoidal frequency sweep test, applying a sinusoidal excitation current to the magnetic powder brake 9 to generate periodic torque disturbances, measuring the amplitude-frequency characteristics (gain-frequency curve) and phase-frequency characteristics (phase lag) of the system at different frequencies; resonance point identification, detecting the resonance frequency of the mechanical system by scanning the torque disturbance frequency to optimize the structural design; harmonic suppression verification, simulating periodic load fluctuations to test the control algorithm's ability to suppress harmonic interference; bandwidth test, gradually increasing the torque disturbance frequency to determine the effective control bandwidth of the system (e.g., the limit frequency of the closed-loop control of servo motor 1). Open-loop and closed-loop experiments: the motion controller drives servo motor 1, while the photoelectric encoder 12 is inactive (open loop); the motion controller and photoelectric encoder 12 form a closed loop, with the encoder 12 providing feedback on motion accuracy (closed loop); time response experiment: in closed-loop control mode, a step command is output, the command and actual feedback graph is plotted, and the overshoot, rise time, and settling time of the second-order system's time response are calculated. The time response was tested under different damping conditions by changing the damping. A transfer function test experiment was conducted: in closed-loop control mode, a step command was output, and the command and actual feedback graphs were plotted. The system transfer function was identified by the overshoot and rise time of the second-order system's time response. A frequency response experiment was also conducted: using a motion controller, a sinusoidal sweep signal was emitted, the phase frequency and phase value were calculated, and Bode and Nyquist plots were plotted. A PID control experiment was also conducted: in closed-loop mode, using an open controller, the effects of PD, PI, and PID control modes under step response were observed. Based on this, velocity feedforward and acceleration feedforward were set, and the feedback and command value curves were observed.

[0078] It should be noted that the non-automated teaching-type mechanical control engineering experimental platform consists of a servo motor 1, encoder 12, magnetic powder brake 9, weight pan 15, pulleys, and synchronous belts. Through the mass-spring-damping system composed of the magnetic powder brake 9, weight pan 15, pulleys, and synchronous belts, this experimental platform mechanically enables all experiments related to time-domain, frequency-domain, open-loop, and closed-loop systems involved in the mechanical control engineering course.

[0079] The device provided in this embodiment also has the following functions:

[0080] (1) This utility model is realized by mechanical means and can realize all experiments involving time domain, frequency domain, open-loop system and closed-loop system in the course of mechanical control engineering.

[0081] (2) Practicality and intuitiveness: Mechanical drive experiments can provide a more intuitive learning experience. Students can directly observe the movement and interaction of mechanical parts, thereby gaining a deeper understanding of mechanical principles.

[0082] (3) Authenticity: This experiment is closer to the real engineering environment, and students can better feel the challenges and limitations that may be encountered in actual engineering, thus better preparing for future work.

[0083] (4) Manual operation: Students need to operate the mechanical equipment themselves, which helps to cultivate their operating skills and hands-on ability, and also enhances their self-confidence.

[0084] (5) Comprehensiveness: Mechanical drive experiments involve mechanical transmission, structural design and other aspects, which can provide more comprehensive learning content and help students build a more complete knowledge system.

[0085] (6) Teamwork: Since purely mechanically driven experiments may involve more mechanical parts and operating steps, students often need to cooperate as a team, which helps to cultivate their teamwork ability and communication skills. In general, mechanically driven mechanical control engineering experiments can provide a more direct and realistic learning experience, which is of positive significance for students' skill development and knowledge acquisition.

[0086] Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0087] The above are merely embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application are included within the scope of the claims of this application.

Claims

1. A non-automated teaching-type mechanical control engineering experimental platform, characterized in that, It includes a support platform (19), and a power unit, a transmission unit, an encoding unit, a braking unit, a safety control unit and a display unit installed on the support platform (19); The power unit and the coding unit are arranged in parallel, respectively located on both sides of the support platform (19); The output of the power unit is fixedly connected to the driving end of the transmission unit, and the input of the encoding unit is fixedly connected to the driven end of the transmission unit. The braking unit has a damping structure and is installed on the input section of the encoding unit; The safety control unit is installed on the power unit and is electrically connected to the power unit; The encoding unit and the display unit are connected via signal transmission.

2. The non-automated teaching-type mechanical control engineering experimental platform according to claim 1, characterized in that, The power unit includes a motor (1) and a motor bracket (2); The motor bracket (2) is fixedly installed on the lower side of the motor (1); The motor (1) is fixedly mounted on the support platform (19) by the motor bracket (2) and bolts; The output shaft end of the motor (1) is fixedly connected to the active end of the transmission unit.

3. The non-automated teaching-type mechanical control engineering experimental platform according to claim 1, characterized in that, The transmission unit includes a driving pulley (3), a toothed belt (4), a driven pulley (13), and an auxiliary pulley (14); The drive pulley (3) is fixedly connected to the output part of the power unit; The driven wheel (13) is fixedly connected to the input section of the encoding unit; The support platform (19) extends upward in the vertical direction with a mounting plate; The auxiliary wheel (14) is rotatably mounted on the upper end of the mounting plate; The driving pulley (3) and the driven pulley (13) are located on both sides of the mounting plate, respectively; The toothed belt (4) is wound around the driving pulley (3), the driven pulley (13) and the auxiliary pulley (14) in a clockwise direction to form a triangular structure.

4. The non-automated teaching-type mechanical control engineering experimental platform according to claim 3, characterized in that, The transmission unit also includes a tension wheel bracket (5), a swing arm (6), and a tension wheel (7) arranged in sequence; The tension wheel bracket (5) is fixedly installed on the support platform (19); One end of the swing arm (6) is fixedly installed to the tension wheel bracket (5); The swing arm (6) is an elastic rod; The tension wheel (7) is rotatably mounted on the other end of the rocker arm (6), and the outer periphery of the tension wheel (7) abuts against the outer side of the toothed belt (4).

5. The non-automated teaching-type mechanical control engineering experimental platform according to claim 3, characterized in that, The auxiliary wheel (14) is also equipped with multiple weight pans (15); The multiple weight pans (15) are evenly distributed at equal angles around the rotation axis of the auxiliary wheel (14).

6. The non-automated teaching-type mechanical control engineering experimental platform according to claim 1, characterized in that, The encoding unit includes an encoder (12), an encoder bracket (10), and a coupling (11) arranged in sequence; The encoder bracket (10) is fixedly installed on the support platform (19); The encoder (12) is fixedly mounted on the encoder bracket (10); The input end of the encoder (12) passes through the encoder (12) support frame and is fixedly connected to one end of the coupling (11); The other end of the coupling (11) is fixedly connected to the driven end of the transmission unit; The encoder (12), the coupling (11), and the driven end of the transmission unit are arranged coaxially.

7. The non-automated teaching-type mechanical control engineering experimental platform according to claim 6, characterized in that, The braking unit includes a magnetic powder brake (9) and a magnetic powder brake bracket (8); The magnetic powder brake bracket (8) is fixedly installed on the support platform (19); The magnetic powder brake (9) and the encoding unit are located on both sides of the magnetic powder brake bracket (8); The output end of the magnetic powder brake (9) passes through the magnetic powder brake bracket (8) and is fixedly connected to the coupling (11); The output end of the magnetic powder brake (9) and the coupling (11) are arranged coaxially.

8. The non-automated teaching-type mechanical control engineering experimental platform according to claim 1, characterized in that, The safety control unit includes a relay (16); The relay (16) is mounted on the power unit and is electrically connected to the power unit via a wire.

9. The non-automated teaching-type mechanical control engineering experimental platform according to claim 8, characterized in that, The relay (16) is also electrically connected to the braking unit via a wire.

10. The non-automated teaching-type mechanical control engineering experimental platform according to claim 1, characterized in that, A temperature sensor (17) is installed at the output end of the power unit.

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