Servo motor control device

Abstract

The utility model provides a servo motor control device, which comprises an air switch QF1, an air switch QF2, a server, a servo motor, a programmable logic controller (PLC), a forward rotation button SB1, a reverse rotation button SB2, a stop button SB3, a forward limit proximity switch SQ1, a reverse limit proximity switch SQ2 and a rectifier bridge, the PLC is respectively connected with the forward rotation button SB1, the reverse rotation button SB2, the stop button SB3, the forward limit proximity switch SQ1, the reverse limit proximity switch SQ2, the rectifier bridge and the server, the rectifier bridge is connected with the air switch QF1, the PLC and the server, the air switch QF2 is connected with the server, and the server is connected with the servo motor. The servo motor control device provided by the utility model can realize accurate control of the servo motor, thereby realizing stable operation of equipment.

Description

Technical Field

[0001] The utility model relates to the technical application field of a servo system and a servo motor, in particular to a servo motor control device. Background Art

[0002] With the advancement of science and technology, the technologies involved in industrial control equipment are becoming more and more automated and intelligent, and modular systems are widely used. As the mainstream control method at present, servo motors are accurate, safe and reliable. At present, servo motor control basically adopts single-chip microcomputer control, which has poor flexibility and versatility. In order to adapt to the technical requirements of electrical design and electrical maintenance brought about by this development, a set of control devices needs to be studied to meet the equipment control requirements. Utility Model Content

[0003] The utility model aims to solve the problem that the servo motor control adopts single chip microcomputer control and has poor flexibility and versatility, thereby providing a servo motor control device, which can realize accurate and flexible control of the servo motor and has high versatility.

[0004] To achieve the above-mentioned purpose of the utility model, the utility model provides a servo motor control device, including an air switch QF1, an air switch QF2, a server, a servo motor, a PLC, a forward button SB1, a reverse button SB2, a stop button SB3, a positive limit proximity switch SQ1, a reverse limit proximity switch SQ2, and a rectifier bridge, wherein the PLC is respectively connected to the forward button SB1, the reverse button SB2, the stop button SB3, the positive limit proximity switch SQ1, the reverse limit proximity switch SQ2, the rectifier bridge, and the server, the rectifier bridge is connected to the air switch QF1, the PLC, and the server, the air switch QF2 is connected to the server, and the server is connected to the servo motor.

[0005] Main circuit connection: The single-phase 220V power supply is connected to the upper side of the 2P circuit breaker QF1, the lower side of the 2P circuit breaker QF1 is connected to the rectifier bridge, the "+" terminal on the lower side of the rectifier bridge is connected to the L+ terminal of the PLC, and the "-" terminal on the lower side of the rectifier bridge is connected to the M terminal of the PLC; the "+" terminal on the lower side of the rectifier bridge is connected to the +24V terminal of the server, and the "-" terminal on the lower side of the rectifier bridge is connected to the M terminal of the server; the single-phase 220V power supply is connected to the upper side of the 2P circuit breaker QF2, and the lower side of the 2P circuit breaker QF2 is connected to the server terminals L1 and L3; the server output terminals U, V, and W are connected to the servo motor.

[0006] Control circuit connection: 24VDC power supply output by the rectifier bridge, short-circuit the M and 1M terminals of the PLC, and lead out the L+ terminal of the PLC through wires, and connect to the PLC input terminals I0.0 to I0.4 through the forward button SB1, reverse button SB2, stop button SB3, positive limit switch SQ1, and reverse limit switch SQ2 respectively; the output terminal 2L+ of the PLC is connected to the L+ of the PLC, and 2M is connected to the M terminal of the PLC, and at the same time connected to the PTIA-24M, PTIB-24M, and DICOM terminals of the servo drive; the terminal Q0.0 of the PLC is connected to the PTIA-24P terminal of the server, the terminal Q0.1 of the PLC is connected to the PTIB-24P terminal of the server, the terminal Q0.2 of the PLC is connected to the CWL terminal of the server, and the terminal Q0.3 of the PLC is connected to the CCWL terminal of the server.

[0007] The servo receives the pulse, direction and distance signals output by Q0.0, Q0.1, Q0.2 and Q0.3 of the PLC. The servo converts the signals and outputs pulse signals to control the direction, frequency and distance of the servo motor.

[0008] The utility model servo motor control device can realize accurate control of the servo motor, so as to realize stable operation of the equipment. It mainly solves the control of precision equipment. The device has completed the electrical connection between various control elements, can realize accurate control of the robot arm, and can also realize the motion control of the X-ray machine moving car. The device has strong versatility and stable performance, and has great promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a functional block diagram of the servo motor simulation control device of the utility model;

[0010] Figure 2 The electrical schematic diagram of the servo motor simulation control device of the utility model;

[0011] Among them: 1. Mesh plate; 2. Rectifier bridge; 3. PLC; 4. Servo motor; 5. Proximity switch; 6. Button; 7. Server. DETAILED DESCRIPTION

[0012] In order to better understand the purpose, structure and function of the utility model, the servo motor control device of the utility model is further described in detail below with reference to the accompanying drawings.

[0013] Reference Figure 1The servo motor control device includes an air switch QF1, an air switch QF2, a server 7, a servo motor 4, a PLC3, a button 6, a proximity switch 5, and a rectifier bridge 2 installed on a mesh plate 1, wherein the PLC is respectively connected to the button, the proximity switch, the rectifier bridge, and the server, the rectifier bridge is connected to the air switch QF1, the PLC, and the server, the air switch QF2 is connected to the server, and the server is connected to the servo motor.

[0014] The proximity switch 5 includes a positive limit proximity switch SQ1 and a reverse limit proximity switch SQ2; the button 6 includes a forward button SB1, a reverse button SB2, and a stop button SB3.

[0015] Through the above connection, use the forward button SB1, reverse button SB2, stop button SB3, positive limit proximity switch SQ1, and reverse limit proximity switch SQ2 to input switch signals to the PLC, and the internal logic operation of the PLC controls the movement of the servo motor.

[0016] S7-200 SMART is a small PLC developed by Siemens. Its features include rich models, flexible configuration, optional expansion, precise customization, high-speed chip, excellent performance, Ethernet interconnection, economical and convenient, simple software and efficient programming.

[0017] Servo drives are mainly used in high-precision positioning systems. They generally control servo motors in three ways: position, speed, and torque to achieve high-precision transmission system positioning. They are high-end products in transmission technology.

[0018] Servo motors can control speed and position with high accuracy. They can convert voltage signals into torque and speed to drive the controlled object. The rotor speed of a servo motor is controlled by the input signal and can respond quickly. In automatic control systems, it is used as an actuator and has the characteristics of small electromechanical time constant and high linearity. It can convert the received electrical signal into angular displacement or angular velocity output on the motor shaft. It is divided into two categories: DC and AC servo motors. Its main characteristics are that there is no self-rotation when the signal voltage is zero, and the speed decreases uniformly with the increase of torque. (1) High power factor and high efficiency; (2) Simple structure and reliable operation; (3) Small size, light weight and low loss.

[0019] As the core component, the server receives the pulse, direction and distance signals output by Q0.0, Q0.1, Q0.2 and Q0.3 of the PLC. The server converts the signals and outputs pulse signals to control the direction, frequency and distance of the servo motor. The air switch QF2 is connected to the server L1 and L3 to provide power signals for the server.

[0020] Figure 2 is the electrical schematic diagram of this device, and the following is an analysis of the schematic diagram.

[0021] (1) Main circuit analysis

[0022] The single-phase 220V power supply is connected to the upper side of 2P circuit breaker QF1, and the lower side of 2P circuit breaker QF1 is connected to the rectifier bridge. The "+" terminal on the lower side of the rectifier bridge is connected to the L+ terminal of the PLC, and the "-" terminal on the lower side of the rectifier bridge is connected to the M terminal of the PLC. The "+" terminal on the lower side of the rectifier bridge is connected to the +24V terminal of the server, and the "-" terminal on the lower side of the rectifier bridge is connected to the M terminal of the server. The single-phase 220V power supply is connected to the upper side of 2P circuit breaker QF2, and the lower side of 2P circuit breaker QF2 is connected to the server terminals L1 and L3. The server output terminals U, V, and W are connected to the servo motor.

[0023] Control circuit analysis

[0024] The control circuit uses a 24V DC power supply. In this device, the 24VDC power supply output by the rectifier bridge is connected by short-circuiting the M and 1M terminals of the PLC, leading out the L+ terminal through a wire, and connecting it to the PLC input terminals I0.0 to I0.4 through the forward button SB1, flip button SB2, stop button SB3, positive limit switch SQ1, and reverse limit switch SQ2 respectively.

[0025] In this device, the output terminal 2L+ of the PLC is connected to the L+ of the PLC, and the output terminal 2M is connected to the M terminal of the PLC, and at the same time connected to the PTIA-24M, PTIB-24M, and DICOM terminals of the servo drive. The terminal Q0.0 of the PLC is connected to the PTIA-24P terminal of the server for sending pulse signals; the terminal Q0.1 of the PLC is connected to the PTIB-24P terminal of the server for sending direction signals; the terminal Q0.2 of the PLC is connected to the CWL terminal of the server for sending positive drive prohibition input signals; the terminal Q0.3 of the PLC is connected to the CCWL terminal of the server for sending reverse drive prohibition input signals.

Claims

1. A servo motor control device, characterized in that: It includes an air switch QF1, an air switch QF2, a server, a servo motor, a PLC, a forward button SB1, a reverse button SB2, a stop button SB3, a positive limit proximity switch SQ1, a reverse limit proximity switch SQ2, and a rectifier bridge, wherein the PLC is respectively connected to the forward button SB1, the reverse button SB2, the stop button SB3, the positive limit proximity switch SQ1, the reverse limit proximity switch SQ2, the rectifier bridge, and the server, the rectifier bridge is connected to the air switch QF1, the PLC, and the server, the air switch QF2 is connected to the server, and the server is connected to the servo motor; Main circuit connection: single-phase 220V power supply is connected to the upper side of 2P circuit breaker QF1, the lower side of 2P circuit breaker QF1 is connected to the rectifier bridge, the "+" terminal on the lower side of the rectifier bridge is connected to the L+ terminal of the PLC, and the "-" terminal on the lower side of the rectifier bridge is connected to the M terminal of the PLC; the "+" terminal on the lower side of the rectifier bridge is connected to the +24V terminal of the server, and the "-" terminal on the lower side of the rectifier bridge is connected to the M terminal of the server; single-phase 220V power supply is connected to the upper side of 2P circuit breaker QF2, and the lower side of 2P circuit breaker QF2 is connected to the server terminals L1 and L3; the server output terminals U, V, and W are connected to the servo motor; Control circuit connection: 24VDC power supply output by the rectifier bridge, short-circuit the M and 1M terminals of the PLC, lead out the L+ terminal of the PLC through the wire, and connect to the PLC input terminals I0.0 to I0.4 through the forward button SB1, reverse button SB2, stop button SB3, positive limit switch SQ1, and reverse limit switch SQ2 respectively; the output terminal 2L+ of the PLC is connected to the L+ of the PLC, and 2M is connected to the M terminal of the PLC, and at the same time connected to the PTIA-24M, PTIB-24M, and DICOM terminals of the servo drive; the terminal Q0.0 of the PLC is connected to the PTIA-24P terminal of the server, the terminal Q0.1 of the PLC is connected to the PTIB-24P terminal of the server, the terminal Q0.2 of the PLC is connected to the CWL terminal of the server, and the terminal Q0.3 of the PLC is connected to the CCWL terminal of the server; The servo receives the pulse, direction and distance signals output by Q0.0, Q0.1, Q0.2 and Q0.3 of the PLC. The servo converts the signals and outputs pulse signals to control the direction, frequency and distance of the servo motor.

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