A Design of Intelligent Family Network Based on Distributed Control System

2012 ◽  
Vol 430-432 ◽  
pp. 1103-1106 ◽  
Author(s):  
Lu Hai Mei
Keyword(s):  
Control System ◽  
Remote Control ◽  
Distributed Control ◽  
Control Structure ◽  
Control Design ◽  
Network Technology ◽  
Distributed Control System ◽  
Intelligent Network ◽  
Family Network ◽  
And Control

In order to promote the development and application of family intelligent network technology, in this paper, a design of intelligent family network based on distributed control system is introduced. The network communication and control structure of systems makes use of a distributed control system, the gateway makes use of construction of embedded systems, remote control design makes use of browser/server to achieve. The programming provides stronger advancement, creation, flexibility and reliability with great research significance and application value.

Operator-based robust nonlinear control and its realization for a multi-tank process by using a distributed control system

2011 ◽  
Vol 34 (7) ◽  
pp. 891-902 ◽  
Author(s):  
Shengjun Wen ◽  
Mingcong Deng ◽  
Shuhui Bi ◽  
Dongyun Wang
Keyword(s):  
Control System ◽  
Feedback Control ◽  
Nonlinear Control ◽  
Distributed Control ◽  
Control Design ◽  
Distributed Control System ◽  
Nonlinear Feedback Control ◽  
Nonlinear Feedback ◽  
Robust Nonlinear Control ◽  
Coprime Factorization

In this paper, a robust nonlinear control design method using an operator-based robust right coprime factorization approach and its realization based on a distributed control system (DCS) device are considered for a multi-tank process. In detail, for the multi-tank process, consisting of a water-level process and a water-flow process, theoretical models are developed according to the Bernoulli theorem. Based on the obtained models, a robust nonlinear feedback control design is presented by using robust right coprime factorization for the multi-tank process. Further, from a large-scale industrial application viewpoint, the realization of the designed operator-based robust right coprime factorization controllers is considered by using a DCS device. Because there are some nonlinear functions in the designed controllers which cannot be realized straightforwardly in the DCS device such that the designed controllers need to be realized approximately. That is, there exist some parasitic terms for the approximated realization of the controllers in the real system. As a result, the parasitic terms and processes’ unknown uncertainties should be considered simultaneously. In this paper, a robust condition is derived to guarantee robust stability of the nonlinear feedback control system with the parasitic terms and the uncertainties. Moreover, tracking controller design problem for the multi-tank process is discussed. Finally, by using a DCS device (CENTUM CS3000), experimental results are given to confirm the effectiveness of the proposed design scheme.

Serial Communication of PC and SCM in Distributed Control System

2012 ◽  
Vol 157-158 ◽  
pp. 1582-1585
Author(s):  
Lian Min Cao ◽  
Qing Liang Zeng ◽  
Xing Yuan Xiao ◽  
Xin Zhang
Keyword(s):  
Control System ◽  
Distributed Control ◽  
Low Cost ◽  
Serial Communication ◽  
Distributed Control System ◽  
Monitoring And Control ◽  
Collection System ◽  
Monitoring And Control System ◽  
Communication Method ◽  
And Control

The application of MSComm widget has achieved serial communication of personal computer and sing-chip micyoco in distributed control system. This communication method has the characteristics of low cost, simple hardware connecting and software designing and convenient operation. It can fulfil the need of serial communication. The serial communication has some valuable reference for monitoring and control system in industry and data collection system.

Study on Process Control Experimental System Based on MCGS

2012 ◽  
Vol 490-495 ◽  
pp. 2790-2794
Author(s):  
Ro Bin Hong ◽  
Hong Mei Wang
Keyword(s):  
Control System ◽  
Process Control ◽  
Distributed Control ◽  
Experimental System ◽  
Flexible Structure ◽  
Distributed Control System ◽  
Industrial Control ◽  
Control Field ◽  
Experimental Effect ◽  
And Control

This paper mainly introduces Process Control comprehensive Experimental System Based on MCGS. The system is a small distributed control system. The host computer with Monitor and Control Generated System (MCGS) completes the simulating and monitoring of the controlled objects. And by RS-232/RS-485, it communicates with the slave computer which is made of Siemens PLC (S7-200). The real-time detected and controlled objects are temperature, pressure, liquid level and flow. The collected data are treated and some data of them are calculated by the way of PID operation in accordance with the specific requirements which results will control the actions of actuators. And in addition, the system can be easily combined into a variety of chemical experiments according to different needs. Practice has proved that the experimental device fully simulates industrial control field and it is simple operation and flexible structure, the experimental effect is good

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