Control system

Abstract

The utility model discloses a control system. The control system comprises at least two programmable logic controllers, a wireless coupler and at least two servo drivers, the wireless coupler is connected with the at least two programmable logic controllers and the at least two servo drivers, and the at least two programmable logic controllers are connected with the at least two servo drivers in a star networking mode. The control system is connected with the at least two programmable logic controllers and the at least two servo drivers through the wireless couplers, flexible communication between the plurality of programmable logic controllers and the plurality of servo drivers can be realized, and the communication efficiency is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of industrial control technology, and in particular to a control system. Background Technology

[0002] With the continuous development of science and technology, programmable logic controller (PLC) automatic control systems have been widely used in many industries, and PLC automatic control systems are also called essential dispatch and command centers in many industries, occupying a very important position.

[0003] Existing industrial control buses all use wired connections, such as Figure 1 As shown, Figure 1 A network diagram of a traditional control system provided for existing technologies. Figure 1 The system adopts a daisy-chain networking configuration, where one PLC controls multiple servo drives. When the PLC controls servo drive n, the control signal needs to be transmitted sequentially to servo drive n via wired means through servo drive 1, servo drive 2, ..., servo drive n-1. This communication method is time-consuming and not flexible enough. Utility Model Content

[0004] This invention provides a control system that utilizes a wireless coupler to enable flexible communication between multiple programmable logic controllers and multiple servo drives, effectively improving communication efficiency.

[0005] This utility model provides a control system, including: at least two programmable logic controllers, a wireless coupler, and at least two servo drivers;

[0006] The wireless coupler is connected to the at least two programmable logic controllers and the at least two servo drivers, and the at least two programmable logic controllers and the at least two servo drivers are connected in a star network configuration.

[0007] Furthermore, at least two programmable logic controllers are connected to the wireless coupler via wired interfaces.

[0008] Furthermore, the wireless coupler is wirelessly connected to the at least two servo drives, and the wireless coupler communicates wirelessly with the at least two servo drives.

[0009] Furthermore, the control cycles of at least two programmable logic controllers are the same or different.

[0010] Furthermore, the control cycles of at least two programmable logic controllers can be customized.

[0011] Furthermore, at least two programmable logic controllers are physical programmable logic controllers.

[0012] Furthermore, at least two programmable logic controllers are virtualized programmable logic controllers.

[0013] Furthermore, at least two programmable logic controllers control the at least two servo drives via the wireless coupler.

[0014] This utility model provides a control system, including: at least two programmable logic controllers (PLCs), a wireless coupler, and at least two servo drives; the wireless coupler is connected to the at least two PLCs and the at least two servo drives, and the at least two PLCs and the at least two servo drives are connected in a star network configuration. This technical solution, by connecting the wireless coupler to the at least two PLCs and the at least two servo drives, enables flexible communication between multiple PLCs and multiple servo drives, effectively improving communication efficiency.

[0015] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of a traditional control system network provided for existing technologies;

[0018] Figure 2 A schematic diagram of the structure of a control system provided in real time for this utility model;

[0019] Figure 3 A structural example diagram of a control system provided for an embodiment of this utility model;

[0020] Figure 4 This is a structural example diagram of another control system provided in an embodiment of the present utility model. Detailed Implementation

[0021] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0022] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0023] In one embodiment, Figure 2 This is a schematic diagram of a control system provided in real time according to the present invention. This control system is applicable to situations where multiple programmable logic controllers control multiple servo drives. For example... Figure 2 As shown, the control system includes: at least two programmable logic controllers 110, a wireless coupler 120, and at least two servo drivers 130;

[0024] The wireless coupler 120 is connected to at least two programmable logic controllers 110 and at least two servo drives 130, and the at least two programmable logic controllers 110 and at least two servo drives 130 are connected in a star network configuration.

[0025] In this embodiment, the programmable logic controller 110 can be a physical programmable logic controller or a virtualized programmable logic controller.

[0026] A physical programmable logic controller (PLC) is a digital computer designed specifically for industrial environments to control machinery or production processes. It performs logical operations, sequential control, timing, counting, and arithmetic operations through programming, replacing traditional relay control circuits. The core components of a physical PLC include: a central processing unit (CPU), memory, input / output modules, a power supply module, a communication interface, and a programming device.

[0027] Among them, virtualized programmable logic controllers can migrate the functions of physical programmable logic controllers to the cloud through virtualization technology, thereby realizing the cloudification, hardware-software decoupling, and intelligent upgrading of control systems.

[0028] In this embodiment, the wireless coupler 120 is a device for wirelessly transmitting signals or energy. The wireless coupler can be a wireless data coupler. The wireless coupler 120 can replace traditional wired connections, improving flexibility and reliability.

[0029] In this embodiment, the servo driver 130, also known as a servo amplifier or servo controller, is a core electronic device used to control the servo motor. The servo driver 130 receives instruction information sent by the programmable logic controller and precisely adjusts the position, speed, and torque of the servo motor.

[0030] In this embodiment, the wireless coupler 120, connected to at least two programmable logic controllers (PLCs) 110, can aggregate the control signals of the at least two PLCs 110 and then send the control signals to the corresponding servo drivers 130, thereby enabling the PLCs to control the target servo drivers. Specifically, the control signal sent by one PLC 110 can be transmitted to at least one servo driver 130 via the wireless coupler 120. The communication cycles of each PLC 110 can be the same or different.

[0031] In this embodiment, at least two programmable logic controllers 110 and at least two servo drives 130 are connected in a star network configuration to enable multiple programmable logic controllers and multiple servo drives to communicate in a flexible manner.

[0032] The technical solution of this utility model embodiment provides a control system, including: at least two programmable logic controllers (PLCs), a wireless coupler, and at least two servo drives; the wireless coupler is connected to the at least two PLCs and the at least two servo drives, and the at least two PLCs and the at least two servo drives are connected in a star network configuration. This control system, by connecting the at least two PLCs and the at least two servo drives via the wireless coupler, enables flexible communication between multiple PLCs and multiple servo drives, effectively improving communication efficiency; in this control system, at least two PLCs are each connected to a wireless coupler to solve the problem that a failure in one PLC affects the normal operation of other PLCs.

[0033] In one embodiment, at least two programmable logic controllers 110 are connected to a wireless coupler 120 via wired interfaces.

[0034] The programmable logic controller 110 can send control signals to the wireless coupler 120 via a wired connection.

[0035] In one embodiment, the wireless coupler 120 is wirelessly connected to at least two servo drives 130, and the wireless coupler 120 communicates wirelessly with the at least two servo drives 130.

[0036] The wireless coupler 120 communicates wirelessly with at least two servo drives 130. Utilizing the characteristics of wireless communication, the servo drives 130 can be dynamically scheduled to different programmable logic controllers 110 for control according to the actual situation.

[0037] In one embodiment, at least two programmable logic controllers 110 have the same or different control cycles.

[0038] The control cycles of the multiple programmable logic controllers 110 can be the same or different. This can be understood as multiple programmable logic controllers 110 sending a control signal to the wireless coupler 120 using the same time period (e.g., 1 millisecond), or multiple programmable logic controllers 110 using different time periods. For example, programmable logic controller 1 sends a control signal to the wireless coupler with a time period of 1 millisecond, while programmable logic controller 2 sends a control signal to the wireless coupler with a time period of 2 milliseconds.

[0039] In one embodiment, the control cycles of at least two programmable logic controllers 110 are custom-configured.

[0040] Among them, multiple programmable logic controllers 110 can send control signals according to a custom-set control cycle.

[0041] In one embodiment, at least two programmable logic controllers 110 are physical programmable logic controllers.

[0042] Among them, multiple programmable logic controllers 110 can be physical programmable logic controllers. The core components of a physical programmable logic controller include: a central processing unit (CPU), memory, input / output modules, a power supply module, a communication interface, and a programming device. Physical PLCs are core hardware for industrial automation, and their modular design adapts to complex control requirements.

[0043] In one embodiment, at least two programmable logic controllers 110 are virtualized programmable logic controllers.

[0044] Virtual PLC is a software-based PLC control system that uses virtualization technology and industrial computers to replace traditional hardware PLCs, enabling industrial automation control. It achieves more flexible and lower-cost automation control through virtualization technology and cloud computing.

[0045] In this embodiment, both virtualized PLC resources and servo drive resources can be dynamically scheduled according to business needs. In one embodiment, at least two programmable logic controllers 110 control at least two servo drives 130 via wireless couplers 120.

[0046] The wireless coupler 120 can aggregate the control signals of multiple physical programmable logic controllers 110 and then send the control signals to the servo driver 130 via wireless communication.

[0047] Among them, the wireless coupler 120 can aggregate the control signals of multiple virtualized programmable logic controllers 110 and then send the control signals to the servo driver 130 through wireless communication.

[0048] In some examples, Figure 3 A structural example diagram of a control system provided for an embodiment of this utility model is shown below. Figure 3 As shown, multiple physical programmable logic controllers (PLC1, PLC2, PLC3, ..., PLCn) are connected to a wireless coupler via a wired interface. The wireless coupler is connected to servo drivers 1 to n via wireless communication.

[0049] In some examples, Figure 4 A structural example diagram of another control system provided in an embodiment of this utility model is shown below. Figure 4 As shown, multiple virtualized programmable logic controllers vPLC1, vPLC2, vPLC3, ..., vPLCn are connected to a wireless coupler via a wired interface. The wireless coupler is connected to servo drivers 1 to servo drivers n via wireless communication.

[0050] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A control system, characterized in that, include: At least two programmable logic controllers, a wireless coupler, and at least two servo drives; The wireless coupler is connected to the at least two programmable logic controllers and the at least two servo drivers, and the at least two programmable logic controllers and the at least two servo drivers are connected in a star network configuration.

2. The system according to claim 1, characterized in that, The at least two programmable logic controllers are respectively connected to the wireless coupler via wired interfaces.

3. The system according to claim 1 or 2, characterized in that, The wireless coupler is wirelessly connected to the at least two servo drives, and the wireless coupler communicates wirelessly with the at least two servo drives.

4. The system according to claim 1, characterized in that, The control cycles of the at least two programmable logic controllers are the same or different.

5. The system according to claim 1 or 4, characterized in that, The control cycle of the at least two programmable logic controllers is customizable.

6. The system according to claim 1, characterized in that, The at least two programmable logic controllers are physical programmable logic controllers.

7. The system according to claim 1, characterized in that, The at least two programmable logic controllers are virtualized programmable logic controllers.

8. The system according to any one of claims 1, 2, 4, 6, and 7, characterized in that, The at least two programmable logic controllers control the at least two servo drives via the wireless coupler.

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