A motion control experimental device for teaching

Abstract

The utility model provides a motion control experimental device for teaching, including a frame, a test bench is arranged on the frame, and adjustable casters are arranged at the bottom of the frame. A servo drive module, a control system, a PLC control module, a variable frequency drive module, a dual-axis control module and an electrical module are arranged on the test bench, and the control system, the PLC control module and the electrical module are connected, and the output end of the PLC control module is respectively connected to the servo drive module, the variable frequency drive module and / or the dual-axis control module. The utility model can provide students with an intuitive experimental platform, and students can intuitively observe and operate these modules, so as to better understand the principles and implementation methods of motion control. Students can learn servo drive modules, variable frequency drive modules and dual-axis control modules to realize the control of motion systems, which helps students master the basic principles and techniques of motion control and improve their practical ability and problem-solving ability.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of teaching tools, in particular to a motion control experimental device for teaching. Background Art

[0002] One of the foundations of industrial automation is the automatic control of various mechanical movements. The experimental teaching of motion control in automatic control is to let students master the motion control of various motors and connected mechanical devices through industrial computers, programmable controllers, or various development boards based on single-chip microcomputers, CPLD, FPGA, DSP, and ARM. This is an introductory training course for students majoring in industrial automation. The most important problem to be solved in this type of course is to improve students' ability to design actual motion control systems, which can only be achieved through experimental teaching training.

[0003] There are some commercial motion control teaching experimental equipment, but they are not only expensive, but also highly integrated and poorly intuitive. The components of the control system are tightly packaged in a black box-like box. Students only use the plug-ins on the panel to build the control system with the control object and sensor hardware, making it difficult to understand the hardware construction status of the control system at the bottom layer. Moreover, the experimental equipment sold on the market has a single function, and a set of equipment can only be used to experiment with one type of motor. Such teaching experiments cannot enable students to master and possess the basic skills of industrial motion control that can be applied in practice. Utility Model Content

[0004] 1. Technical problems to be solved by the utility model:

[0005] The utility model provides a teaching motion control experimental device, which is used to solve the technical problems existing in the above-mentioned background technology.

[0006] 2. Technical solution:

[0007] To achieve the above-mentioned purpose, the technical solution provided by the utility model is: a motion control experimental device for teaching, comprising a frame, a laboratory table is arranged on the frame, and adjustable casters are arranged at the bottom of the frame. A servo drive module, a control system, a PLC control module, a variable frequency drive module, a dual-axis control module and an electrical module are arranged on the laboratory table. The control system, PLC control module and electrical module are connected, and the output end of the PLC control module is respectively connected to the servo drive module, the variable frequency drive module and / or the dual-axis control module.

[0008] Preferably, the servo drive module includes a servo motor, a motor shaft of the servo motor is connected to a screw module, an output end of the screw module is connected to a connecting block, the connecting block is mounted on a slide rail assembly, a plurality of photoelectric switches are arranged above the slide rail assembly, the servo motor is connected to a servo motor drive, the servo motor drive is connected to a first control switch, a first banana socket and an indicator light, and the first banana socket is connected to a PLC control module via a wire.

[0009] Preferably, the input end of the control system is connected to the first touch screen, the PLC control module includes a PLC controller, an IO module, a first wiring terminal, a digital tube, a second banana socket and a second touch screen, the PLC controller is communicatively connected to the IO module, the IO module is connected to the servo drive module, the variable frequency drive module or the dual-axis control module through the second banana socket, the IO module is connected to the electrical module through the first wiring terminal, and the digital tube and the second touch screen are connected to the PLC controller through a data line.

[0010] Preferably, the variable frequency drive module includes a three-phase asynchronous motor, a second control switch, a third banana socket, a frequency converter and a first AC contactor connected to each other, the frequency converter outputs a control signal of the three-phase asynchronous motor, the third banana socket is connected to the PLC control module through a wire, and the first AC contactor controls the power on and off of the three-phase asynchronous motor.

[0011] Preferably, the dual-axis control module includes a connected stepper motor, a third control switch, a stepper motor driver and a fourth banana socket, the fourth banana socket is connected to the PLC control module through a wire, and the stepper motor driver converts the control signal into a pulse sequence of the stepper motor to control the rotation of the stepper motor.

[0012] Preferably, the electrical module includes a second AC contactor, a switching power supply, a fifth banana socket, a second wiring terminal and a network port that are connected to each other, the switching power supply supplies power to the experimental bench, the network port is used for network communication, the second wiring terminal is connected to the control system through a wire, the second AC contactor is used to control the on and off of the switching power supply, and the fifth banana socket is connected to the servo drive module, the variable frequency drive module and the dual-axis control module through a wire.

[0013] 3. Beneficial effects:

[0014] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0015] The utility model designs the servo drive module, control system, PLC control module, variable frequency drive module, dual-axis control module and electrical module as independent modules, which can be easily replaced, upgraded and maintained, and is also convenient for operation and experiment in the teaching process. With the servo drive module, variable frequency drive module and dual-axis control module as execution components, and the control system, PLC control module and electrical module as control components, a variety of different motion scenes can be simulated and controlled, which is suitable for a variety of different teaching needs, allowing students to freely combine industrial automation control modes, improve students' hands-on ability and learning skills, and facilitate students to master knowledge such as programmable control, variable frequency speed regulation, servo control and dual-axis control. It is also small in size and can be widely used in desktop industrial control practice teaching in colleges and universities, effectively reducing teaching costs and achieving teaching training effects. It integrates teaching and training, and can quickly let students understand the principles of motion control systems and improve students' hands-on operation capabilities.

[0016] The experimental table of the utility model is provided with a servo drive module, a control system, a PLC control module, a variable frequency drive module, a dual-axis control module and an electrical module, which can provide students with an intuitive experimental platform, and students can intuitively observe and operate these modules, so as to better understand the principles and implementation methods of motion control. By using this experimental device, students can learn how to use PLC control modules, servo drive modules, variable frequency drive modules and dual-axis control modules to control the motion system. This helps students master the basic principles and techniques of motion control and improve their practical ability and problem-solving ability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the experimental platform of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the servo drive module of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the PLC control module of the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the variable frequency drive module of the utility model;

[0022] Figure 6 This is a schematic diagram of the structure of a dual-axis control module of the utility model;

[0023] Figure 7 This is a schematic diagram of the electrical module structure of the utility model.

[0024] Reference numerals:

[0025] 1. Rack; 2. Experimental table; 3. Adjustable casters; 4. Servo drive module; 41. Servo motor; 42. Screw module; 43. Connecting block; 44. Slide rail assembly; 45. Indicator light; 46. Photoelectric switch; 47. Servo motor drive; 48. First control switch; 49. First banana socket; 5. Control system; 6. PLC control module; 61. PLC controller; 62. IO module; 63. First terminal block; 64. Digital tube; 65. Second banana socket ; 66, second touch screen; 7, frequency conversion drive module; 71, three-phase asynchronous motor; 72, second control switch; 73, third banana socket; 74, inverter; 75, first AC contactor; 8, dual-axis control module; 81, stepper motor; 82, third control switch; 83, stepper motor drive; 84, fourth banana socket; 9, electrical module; 91, second AC contactor; 92, switching power supply; 93, fifth banana socket; 94, second wiring terminal; 95, network port. DETAILED DESCRIPTION

[0026] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", "provided with", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] It should be noted that the structures not introduced in the present invention are not related to the design points and improvement directions of the present invention, and are the same as the prior art or can be implemented by using the prior art, and will not be described in detail here. Example

[0031] See attached Figures 1 to 7 A motion control experimental device for teaching includes a frame 1, a laboratory table 2 is arranged on the frame 1, and adjustable casters 3 are arranged at the bottom of the frame 1. A servo drive module 4, a control system 5, a PLC control module 6, a variable frequency drive module 7, a dual-axis control module 8 and an electrical module 9 are arranged on the laboratory table 2. The control system 5, the PLC control module 6 and the electrical module 9 are connected, and the output end of the PLC control module 6 is respectively connected to the servo drive module 4, the variable frequency drive module 7 and / or the dual-axis control module 8.

[0032] The servo drive module 4 includes a servo motor 41, the motor shaft of the servo motor 41 is connected to the screw module 42, the output end of the screw module 42 is connected to the connecting block 43, the connecting block 43 is installed on the slide rail assembly 44, and a plurality of photoelectric switches 46 are arranged above the slide rail assembly 44. The servo motor 41 is connected to the servo motor drive 47, the servo motor drive 47 is connected to the first control switch 48, the first banana socket 49 and the indicator light 45, and the first banana socket 49 is connected to the PLC control module 6 through a wire.

[0033] The servo motor driver 47 precisely controls the servo motor 41, cooperates with the screw module 42 and the slide rail assembly 44, and realizes precise control of the position of the connection block 43. At the same time, the photoelectric switch 46 provides position feedback to ensure the accuracy of control, and the PLC control module 6 manages and controls the entire system to achieve servo control. The first control switch 48 is used to manually control the start and stop of the servo drive module 4, the indicator light 45 is used to display the system status, and the first banana socket 49 is used to connect an external wire to communicate with the PLC control module 6.

[0034] The input end of the control system 5 is connected to the first touch screen, and commands are input through the first touch screen to control other modules on the experimental platform 2. The PLC control module 6 includes a PLC controller 61, an IO module 62, a first wiring terminal 63, a digital tube 64, a second banana socket 65 and a second touch screen 66. The PLC controller 61 is connected to the IO module 62 for communication. The IO module 62 is connected to the servo drive module 4, the variable frequency drive module 7 or the dual-axis control module 8 through the second banana socket 65. The IO module 62 is connected to the electrical module 9 through the first wiring terminal 63, and the digital tube 64 and the second touch screen 66 are connected to the PLC controller 61 through a data line.

[0035] The PLC controller 61 is the brain of the PLC control module 6. It executes program logic, processes input signals, performs necessary calculations, and generates output signals to control external devices. The PLC controller 61 is connected to the IO module 62 through an internal communication network to receive and send data. The digital tube 64 is used to display digital information, such as device status, values, etc. The second touch screen 66 is used to monitor and control the process, and the user can operate by touching the screen. The IO module is responsible for connecting and controlling various input and output devices on site, such as switches, sensors, and actuators. The IO module is connected to each module through a wire and transmits status signals (such as switch status) back to the PLC controller 61.

[0036] The variable frequency drive module 7 includes a three-phase asynchronous motor 71, a second control switch 72, a third banana socket 73, a frequency converter 74 and a first AC contactor 75 connected to each other. The frequency converter 74 outputs a control signal of the three-phase asynchronous motor 71, thereby realizing variable frequency speed regulation of the three-phase asynchronous motor 71. The third banana socket 73 is connected to the PLC control module 6 through a wire, and the first AC contactor 75 controls the power on and off of the three-phase asynchronous motor 71.

[0037] The three-phase asynchronous motor 71 is a simple structure, widely used AC motor, which works on the principle of electromagnetic induction and can run without synchronous speed. The second control switch 72 is used to realize the functions of starting and continuously running the three-phase asynchronous motor 71.

[0038] The dual-axis control module 8 includes a connected stepper motor 81, a third control switch 82, a stepper motor driver 83 and a fourth banana socket 84. The third control switch 82 controls the start and stop of the dual-axis control module 8. The fourth banana socket 84 is connected to the PLC control module 6 through a wire. The stepper motor driver 83 converts the control signal of the PLC control module 6 into a pulse sequence of the stepper motor 81. The stepper motor 81 receives the control signal from the stepper motor driver 83 and performs specific actions or position adjustments through precise rotation.

[0039] The electrical module 9 includes a second AC contactor 91, a switching power supply 92, a fifth banana socket 93, a second wiring terminal 94 and a network port 95 connected to each other. The switching power supply 92 supplies power to the experimental table 2, converts the AC power into a more stable DC power, and provides the required power for the equipment. The network port 95 is used to provide a network connection function for data transmission. The second wiring terminal 94 is connected to the control system 5 through a wire, and the second AC contactor 91 is used to control the on and off of the switching power supply 92 or to switch high-power loads. The fifth banana socket 93 is connected to the servo drive module 4, the variable frequency drive module 7 and the dual-axis control module 8 through a wire.

[0040] Working principle:

[0041] By designing the servo drive module 4, the control system 5, the PLC control module 6, the variable frequency drive module 7, the dual-axis control module 8 and the electrical module 9 as independent modules, they can be easily replaced, upgraded and maintained, and are also convenient for operation and experiment during the teaching process. By using the servo drive module 4, the variable frequency drive module 7 and the dual-axis control module 8 as the execution components, and the control system 5, the PLC control module 6 and the electrical module 9 as the control components, a variety of different motion scenes can be simulated and controlled, which is suitable for a variety of different teaching needs, allowing students to freely combine industrial automation control modes, improve students' hands-on ability and learning skills, and facilitate students to master knowledge such as programmable control, variable frequency speed regulation, servo control and dual-axis control. It is also small in size and can be widely used in desktop industrial control practice teaching in colleges and universities, effectively reducing teaching costs and achieving teaching training effects. It integrates teaching and training, and can quickly let students understand the principles of motion control systems and improve students' hands-on operation capabilities.

[0042] The above-described embodiments only express a certain implementation method of the utility model, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the patent of the utility model shall be based on the attached claims.

Claims

1. A motion control experimental device for teaching, comprising a frame (1), a test bench (2) arranged on the frame (1), and adjustable casters (3) arranged at the bottom of the frame (1), characterized in that: The experimental platform (2) is provided with a servo drive module (4), a control system (5), a PLC control module (6), a variable frequency drive module (7), a dual-axis control module (8) and an electrical module (9); the control system (5), the PLC control module (6) and the electrical module (9) are connected; and the output end of the PLC control module (6) is respectively connected to the servo drive module (4), the variable frequency drive module (7) and / or the dual-axis control module (8).

2. A teaching motion control experimental device according to claim 1, characterized in that: The servo drive module (4) comprises a servo motor (41), the motor shaft of the servo motor (41) is connected to a screw module (42), the output end of the screw module (42) is connected to a connection block (43), the connection block (43) is mounted on a slide rail assembly (44), a plurality of photoelectric switches (46) are arranged above the slide rail assembly (44), the servo motor (41) is connected to a servo motor drive (47), the servo motor drive (47) is connected to a first control switch (48), a first banana socket (49) and an indicator light (45), and the first banana socket (49) is connected to a PLC control module (6) via a wire.

3. A teaching motion control experimental device according to claim 1, characterized in that: The input end of the control system (5) is connected to the first touch screen; the PLC control module (6) comprises a PLC controller (61), an IO module (62), a first wiring terminal (63), a digital tube (64), a second banana socket (65) and a second touch screen (66); the PLC controller (61) is communicatively connected to the IO module (62); the IO module (62) is connected to the servo drive module (4), the variable frequency drive module (7) or the dual-axis control module (8) via the second banana socket (65); the IO module (62) is connected to the electrical module (9) via the first wiring terminal (63); and the digital tube (64) and the second touch screen (66) are connected to the PLC controller (61) via a data line.

4. A teaching motion control experimental device according to claim 1, characterized in that: The variable frequency drive module (7) comprises a three-phase asynchronous motor (71), a second control switch (72), a third banana socket (73), a frequency converter (74) and a first AC contactor (75) which are connected to each other; the frequency converter (74) outputs a control signal of the three-phase asynchronous motor (71); the third banana socket (73) is connected to the PLC control module (6) via a wire; and the first AC contactor (75) controls the on and off of the power supply of the three-phase asynchronous motor (71).

5. The teaching motion control experimental device according to claim 1, characterized in that: The dual-axis control module (8) comprises a stepper motor (81), a third control switch (82), a stepper motor driver (83) and a fourth banana socket (84) connected to each other. The fourth banana socket (84) is connected to the PLC control module (6) via a wire. The stepper motor driver (83) converts a control signal into a pulse sequence of the stepper motor (81) to control the rotation of the stepper motor (81).

6. A teaching motion control experimental device according to claim 1, characterized in that: The electrical module (9) comprises a second AC contactor (91), a switching power supply (92), a fifth banana socket (93), a second wiring terminal (94) and a network port (95) which are connected to each other. The switching power supply (92) supplies power to the experimental table (2). The network port (95) is used for network communication. The second wiring terminal (94) is connected to the control system (5) via a wire. The second AC contactor (91) is used to control the on and off of the switching power supply (92). The fifth banana socket (93) is connected to the servo drive module (4), the variable frequency drive module (7) and the dual-axis control module (8) via a wire.

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