EtherCAT-based direct current common bus servo driving apparatus

Abstract

The invention relates to a DC common bus servo drive device based on EtherCAT. The DC common bus servo drive device includes: a servo drive component, a servo motor component, a control unit and a rectifier unit. Both the rectifier unit and the control unit are connected to the servo drive component. The servo drive The components are connected to the servo motor assembly; the control unit includes an EtherCAT master station module; the servo drive assembly includes at least one servo drive unit connected in sequence, the servo motor assembly includes at least one servo motor, and each servo drive unit is connected to a servo motor; each servo drive The units are connected to the rectification unit; each servo drive unit includes an EtherCAT slave module, and each EtherCAT slave module is connected to the EtherCAT master module. The beneficial effects of the invention are: the EtherCAT real-time industrial Ethernet topology structure is convenient, the cost is low, the volume is small, the number of servo drivers can be increased or decreased according to actual application requirements, and the disassembly and assembly are convenient.

Description

technical field

[0001] The invention relates to the technical field of servo drive, in particular to an EtherCAT-based DC common bus servo drive device. Background technique

[0002] The existing servo driver is composed of rectification, inverter and control units. This kind of servo driver is equivalent to a driver with a rectifier unit, which is difficult to control in terms of cost. Since the rectifier unit needs a large area of ​​heat dissipation treatment, which makes the volume relatively large, the control cabinet needs more space. . Generally, an industrial robot needs multiple AC servo motors as actuators, and one AC servo motor needs a servo driver for control. The controller sends motion instructions to each drive through the field bus. At present, the traditional field bus is mostly CAN field bus, and the unit price of CAN field bus components is relatively high, which causes the overall cost of the entire control system to be relatively high. The CAN field ...

Examples

Embodiment Construction

[0023] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0024] Such as figure 1 As shown, a DC common bus servo drive device based on EtherCAT, the DC common bus servo drive device includes: servo drive assembly 1, servo motor assembly 2, control unit 3 and rectifier unit 4, rectifier unit 4 and control unit 3 are connected Servo drive assembly 1, the servo drive assembly 1 is connected to the servo motor assembly 2;

[0025] The control unit 3 includes an EtherCAT master module 31, the EtherCAT master module 31 is connected to the servo drive assembly 1, and the EtherCAT master module 31 is used to control the servo drive assembly 1;

[0026] The servo drive assembly 1 includes at least one servo drive unit 11 connected in sequence, the servo motor assembly 2 includes ...

technical field

[0001] The invention relates to the technical field of servo drive, in particular to an EtherCAT-based DC common bus servo drive device. Background technique

[0002] The existing servo driver is composed of rectification, inverter and control units. This kind of servo driver is equivalent to a driver with a rectifier unit, which is difficult to control in terms of cost. Since the rectifier unit needs a large area of ​​heat dissipation treatment, which makes the volume relatively large, the control cabinet needs more space. . Generally, an industrial robot needs multiple AC servo motors as actuators, and one AC servo motor needs a servo driver for control. The controller sends motion instructions to each drive through the field bus. At present, the traditional field bus is mostly CAN field bus, and the unit price of CAN field bus components is relatively high, which causes the overall cost of the entire control system to be relatively high. The CAN field ...

Examples

Embodiment Construction

[0023] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0024] Such as figure 1 As shown, a DC common bus servo drive device based on EtherCAT, the DC common bus servo drive device includes: servo drive assembly 1, servo motor assembly 2, control unit 3 and rectifier unit 4, rectifier unit 4 and control unit 3 are connected Servo drive assembly 1, the servo drive assembly 1 is connected to the servo motor assembly 2;

[0025] The control unit 3 includes an EtherCAT master module 31, the EtherCAT master module 31 is connected to the servo drive assembly 1, and the EtherCAT master module 31 is used to control the servo drive assembly 1;

[0026] The servo drive assembly 1 includes at least one servo drive unit 11 connected in sequence, the servo motor assembly 2 includes ...

Images