Industrial-control practical training apparatus based on OPC

Abstract

An industrial-control practical training apparatus based on OPC is disclosed. The apparatus is formed by a controlled object, a control cabinet and a control host. A water tank, a water pump and an allocated pipeline are taken as experiment objects. Industrial control equipment of an on-site instrument, an intelligent IO module, an intelligent PID controller, a PLC and the like are equipped so as to carry out various kinds of control on parameters in processes of pressure, a flow, a liquid level and the like. Based on the OPC, an industrial control instrument is integrated with Matlab software, industrial control configuration software, even VB and other general programming languages. The apparatus can complete a traditional general instrument control and also can form customized control taking a customized soft controller in the Matlab or the VB as a core, an application environment is provided for a student to be familiar with an automatic control theory, learn and practice a new control algorithm and an experiment platform is provided for teh student to learn and apply the OPC. Through using experiment management software exploited based on the VB and the OPC, a good support can be provided for local management, remote monitoring and grade evaluation of the experiment.

Description

Technical field [0001] The invention relates to a process control teaching experiment device, in particular to an OPC-based industrial control training device, belonging to the field of teaching equipment. Background technique [0002] In modern education and teaching activities, experimental teaching is an indispensable key link, which is very important for cultivating students' practical working ability. The lack of experimental equipment greatly restricts students' learning and acquisition of skills. With the aid of a well-designed experimental device, it can build a bridge between the theoretical study of relevant knowledge and the practical engineering application skill training for students, and it also further simplifies the preparation, debugging and processing of complex control algorithms in the control system. [0003] The field of industrial process control requires a large number of field devices, smart meters, and control application software. It often requires dedica...

AI Technical Summary

Problems solved by technology

Since the data communication standards of on-site industrial control equipment are not uniform, it is difficult for MATLAB / SIMULINK to perform direct data communication with on-site industrial control equipment, so that many advanced control algorithms can only stay in the pure digital simulation stage; however, pure digital simulation based on SIMULINK is often difficult. To accurately simulate the actual control object, in the modeling process, it is often necessary to make some assumptions and approximations to the object model, while ignoring some disturbances and noises that may exist in the actual object system, resulting in a comparison between the simulation results and the actual application effect. Large discrepancy, while hardware-in-the-loop simulation can obtain more realistic control effects

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