CN211293174U - Stepping motor control experimental device based on PLC and touch screen - Google Patents

Abstract

The utility model belongs to the field of mechatronics, and in particular relates to a stepper motor control experimental device based on PLC and a touch screen. The various components of the utility model are fixed on a flat frame and are arranged in four layers, and the top row is a stepper motor. Motor, coupling, screw-nut pair, slider; the second row is the displacement sensor; the third row is the 24V switching power supply, PLC, stepper motor driver; the bottom row is the touch screen. When the entire device is in forward control, the displacement sensor is used to detect the position of the slider. When the entire device is in reverse control, the displacement sensor provides an input signal to the PLC to control the rotation of the stepper motor, thereby controlling the slider to track the position of the displacement sensor. The utility model is mainly used for learning the control of the speed and position of the stepping motor and the method for processing the analog input and output signals by the PLC. The utility model has the characteristics of practicality, ease of operation, openness and safety.

Description

An experimental device for stepper motor control based on PLC and touch screen

technical field

The utility model belongs to the field of electromechanical integration, in particular to a stepping motor control experimental device based on a PLC and a touch screen.

Background technique

Stepper motor is an open-loop control motor that converts electrical pulse signals into angular displacement or linear displacement. It is the main executive element in the control system and is widely used. In the case of non-overload, the speed and stop position of the motor only depend on the frequency and number of pulses of the pulse signal, and are not affected by the load change. When the stepper driver receives a pulse signal, it drives the stepper motor to press The set direction is rotated by a fixed angle, called "step angle", and its rotation is performed step by step at a fixed angle. The angular displacement can be controlled by controlling the number of pulses, so as to achieve the purpose of accurate positioning; at the same time, the speed and acceleration of the motor rotation can be controlled by controlling the pulse frequency, so as to achieve the purpose of speed regulation. Stepper motor is a kind of induction motor. Its working principle is to use electronic circuit to turn direct current into time-sharing power supply, and multi-phase sequence control current. Use this current to supply power to stepper motor, so that stepper motor can work normally. The driver is a time-sharing power supply for the stepper motor, a multi-phase sequence controller.

The control of stepper motor is very important for users and designers, and it is also very basic. At present, the existing stepper motor control experimental devices generally have the following defects:

1. It is mostly integrated with other PLC controls, and the characteristics are not prominent enough. Most of them are installed in a "black box" style, and the connection and wiring of each part are invisible;

2. Generally, the stepper motor does not carry a load, and only the rotational movement of the stepper motor can be seen, and the phenomenon is not obvious enough;

3. The setting and display of parameters mostly use the host computer, the operation is too cumbersome, and the displayed information is not intuitive;

4. There is no displacement sensor and no displacement detection function, and it is impossible to learn the processing method of PLC for analog input signal and the processing method of PLC for analog output signal.

Utility model content

In order to solve the above problems, the utility model provides a stepper motor control experimental device based on PLC and touch screen, which adopts an open structure design and is mainly used for learning the control method of the speed and position of the stepper motor; The method for processing analog input signals and the method for processing analog output signals by PLC have the characteristics of practicality, ease of operation, openness and safety.

The technical scheme of the present utility model:

A stepper motor control experimental device based on PLC and touch screen is composed of screw-nut pair, slider, displacement sensor, PLC, stepper motor driver, touch screen, flat rack, 24V switching power supply, stepper motor, coupling device composition. The experimental device is equipped with a flat frame, and other components of the experimental device are fixed on the flat frame, which are arranged in four layers. The top row is a stepper motor, a coupling, a screw-nut pair and a slider; the second The row is the displacement sensor; the third row is the 24V switching power supply, PLC, stepper motor driver; the middle position of the bottom row is the touch screen.

Further, the touch screen is used for setting and display; PLC outputs pulses of different cycles and numbers to the stepper motor driver through its Q0.0, and the stepper motor driver subdivides and powers the pulses output by the PLC to drive the stepper motor. into the motor; the stepper motor is connected with the screw-nut pair through the coupling, and the screw-nut pair 1 converts the rotary motion of the stepper motor into the linear motion of the nut and the slider.

Further, when the entire device is in forward control, the displacement sensor is used to detect the position of the slider, and when the entire device is in reverse control, the displacement sensor provides an input signal to PLC4 to control the rotation of the stepper motor, thereby controlling the slider to track the displacement. the location of the sensor.

Further, the 24V switching power supply provides power for the touch screen, the PLC, and the stepping motor driver, and the power supply for the displacement sensor is provided by the sensor power supply provided by the PLC.

The utility model has the following beneficial effects:

The utility model has the characteristics of practicability: the present invention allows the operator to learn the control method of the speed and position of the stepping motor, the processing method of the analog input and output signals by the PLC, the logic control method of the PLC, the data processing method and the The programming method of the touch screen, etc.

The utility model has the characteristics of simple operation: the program design of the experimental device is concise and optimized, and the operator who has the basis of PLC and touch screen can master the control method of the speed and position of the stepping motor in 2 to 3 hours. The processing method of the input signal and the processing method of the PLC to the analog output signal.

The utility model has the characteristics of openness: the program of the experimental device is open source, and the operator can develop a new program with more and higher functions on the basis of the original program.

The utility model has the characteristics of safety: the experimental device has carried out special treatment on the power supply part, which can effectively protect the safety of the operator.

Description of drawings

FIG. 1 is a schematic structural diagram of a stepper motor control experimental device based on PLC and touch screen of the present invention.

Fig. 2 is a control flow chart of a stepper motor control experimental device based on PLC and touch screen of the present invention.

In the figure, 1 is a screw-nut pair, 2 is a slider, 3 is a displacement sensor, 4 is a PLC, 5 is a stepper motor driver, 6 is a touch screen, 7 is a flat rack, 8 is a 24V switching power supply, and 9 is a Stepper motor, 10 is a coupling.

Detailed ways

In order to make the purpose and advantages of the present utility model more clear, the present utility model will be further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

As shown in Figure 1 and Figure 2, the embodiment of the present invention provides a stepper motor control experimental device based on PLC and touch screen, which consists of a screw-nut pair 1, a slider 2, a displacement sensor 3, a PLC, a stepper motor Motor driver 5, touch screen 6, flat rack 7, 24V switching power supply 8, stepping motor 9, coupling 10. The experimental device is provided with a flat frame 7, and other components of the experimental device are fixed on the flat frame 7 and are arranged in four layers. The top row is a stepper motor 9, a coupling 10, a screw-nut pair 1 and Slider 2; the second row is the displacement sensor 3; the third row is the 24V switching power supply 8, PLC, stepper motor driver 5; the middle position of the bottom row is the touch screen 6.

The touch screen 6 is used for setting and displaying, mainly setting the period of PTO and the number of PTO, controlling the operation of the stepping motor, mainly displaying the actual number of PTO, comparing the actual number and the calculated number, and obtaining the reverse of the experimental device. The accuracy of operation; PLC uses its own PTO function to output pulses of different cycles and numbers to the stepper motor driver 5 through its Q0.0, and the stepper motor driver 5 subdivides and power-amplifies the pulses output by the PLC to drive Stepper motor 9; The stepper motor 9 is connected with the screw-nut pair 1 through the coupling 10, and the screw-nut pair 1 converts the rotary motion of the stepper motor 9 into the linear motion of the nut and the slider 2.

When the whole device is in forward control, the displacement sensor 3 is used to detect the position of the slider 2. When the whole device is in reverse control, the displacement sensor 3 provides an input signal to the PLC to control the rotation of the stepper motor 9, thereby controlling the slider 2 Track the position of the displacement sensor 3.

The 24V switching power supply 8 provides power for the touch screen 6, the PLC, and the stepping motor driver 5, and the power supply for the displacement sensor 3 is provided by the sensor power supply provided by the PLC.

The models of the main components of the experimental device are shown in the figure below. name model PLC Siemens S7-200 CPU224XP touch screen Delta DOP-A57GSTD stepper motor 42 stepper motor Stepper Motor Driver Sanyo ZD-873157 Motion detector KTC-250

The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, some improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications It should also be regarded as the protection scope of the present invention.

Claims (4)

1. a stepper motor control experimental device based on PLC and touch screen, is characterized in that: comprise lead screw-nut pair (1), slider (2), displacement sensor (3), PLC (4), stepper motor Drive (5), touch screen (6), flat frame (7), 24V switching power supply (8), stepper motor (9), coupling (10); the experimental device is provided with a flat frame (7), which is fixed The components on the flat frame (7) are arranged in four layers, the top row is the stepper motor (9), the coupling (10), the screw-nut pair (1) and the slider (2); The second row is a displacement sensor (3); the third row is a 24V switching power supply (8), a PLC (4), and a stepper motor driver (5); the middle position of the bottom row is a touch screen (6). 2. a kind of stepper motor control experimental device based on PLC and touch screen according to claim 1, is characterized in that: touch screen (6) is used for setting and display; PLC (4) outputs different cycles and through its Q0.0 The number of pulses are given to the stepping motor driver (5), and the stepping motor driver (5) subdivides and power-amplifies the pulses output by the PLC (4) to drive the stepping motor (9); the stepping motor (9) passes the The coupling (10) is connected with the screw-nut pair (1), and the screw-nut pair (1) converts the rotary motion of the stepping motor (9) into the linear motion of the nut and the slider (2). 3. a kind of stepper motor control experimental device based on PLC and touch screen according to claim 1, is characterized in that: whole device is in forward control, and displacement sensor (3) is used to detect the position of slider (2), The whole device is under reverse control, and the displacement sensor (3) provides an input signal to the PLC (4) to control the rotation of the stepper motor (9), thereby controlling the slider (2) to track the position of the displacement sensor (3). 4. a kind of stepper motor control experimental device based on PLC and touch screen according to claim 1, is characterized in that: 24V switching power supply (8) is touch screen (6), PLC (4), stepper motor driver (5) ) to provide the power supply, and the power supply of the displacement sensor (3) is provided by the sensor power supply provided by the PLC (4).

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