A Distributed Closed-loop Control System Based on Internet

Abstract

The invention relates to an internet-based distributed type closed-loop control system and method. The internet-based distributed type closed-loop control system mainly comprises a controlled system, a monitoring unit, a local control calculating unit, a control execution unit, a local gateway, a communication server and a remote control calculating unit, wherein the monitoring unit is used for monitoring a certain variable of the controlled system and transmitting a monitoring value to the local or remote control calculating unit through the local gateway, wherein the local or remote control calculating unit is distributed on the internet; the local or remote control calculating unit is used for comparing the received monitoring value as an input with a target value set by the system in advance, respectively finishing the respective calculation tasks and generating respective control instructions; and the control instructions generated through calculation are processed according to a certain logical relationship and then are output to the control execution unit for executing control on the controlled system. The internet-based distributed type closed-loop control system has the following characteristics of good real-time property, high reliability, strong applicability, convenience in implementation, low cost, good expansibility and wide market prospect.

Description

technical field [0001] The invention relates to a closed-loop control system, which belongs to the field of automatic control, and in particular to an Internet-based distributed closed-loop control system and its method. Background technique [0002] Closed-loop control system is the basic structure of various automatic controls, mainly used in indoor or certain system temperature control, pressure control of water supply or heat supply, flow control of liquid or gas, humidity control of soil or gas, etc. The closed-loop control system collects a certain variable or a group of variables of the controlled system through the monitoring unit as the input of the control calculation, and compares the preset target value or the dynamically tracked target value to make the controlled system work stably at a certain level. within a controlled range. [0003] With the rapid development of 3C technology, especially the rapid development of the mobile Internet in recent years, the pro...

AI Technical Summary

Problems solved by technology

This technical solution is only suitable for relatively concentrated professional industries to realize the application of decentralized collection and centralized control, and is not suitable for the application of distributed collection and distributed control. At the same time, the cost is high and the usability is poor.

[0008] The technical cases retrieved above have the following common features: the system has low reliability and poor real-time performance, which directly limits its application in the field of automation control; and the low degree of intelligence and high cost of use make it impossible to popularize; moreover, in In the field of automation control, these systems built under traditional or current technical conditions are no longer really applicable to distributed, human-centered, Intelligent automatic control occasions

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