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The Development Of Integrated Engineering Experiment Device Used By Students Of Automation Major

Posted on:2007-10-22Degree:MasterType:Thesis
Country:ChinaCandidate:S Q YangFull Text:PDF
GTID:2178360212970464Subject:Control Engineering
Abstract/Summary:PDF Full Text Request
In order to make up for the insufficiencies of practice that existed in the production practice and the graduation practice to some extent in recent years, an integrated engineering experimental device of automation has been developed. It is made up of a micro-beer production line and a control system which takes the line as its controlled object. The main characteristic of this device is that it combines the automatic technology organically with a real production process, and measurement and control results are reflected in production efficiency and product quality finally. In this way, students can hold the automatic technology from the whole of industrial production system. This paper talks about the control system of micro-beer production line, mainly about its design program, hardware configuration, control strategies and software design. This device reflects the automation's characteristics, which are the combination between strong electricity and weak electricity, the combination between software and hardware and the combination between conventional technology and advanced technology.The controlled object that has big inertia, big lag, non-linear or strong coupling is the difficulty of automatic control, and also is the focus of automatic control. The selected controlled object reflects the above difficulty and focus fully in this device, and this provides a good experimental platform for students. One example, because of affects of cooling water transmission and various environmental factors, there is a serious pure time lag in the beer fermentation process. If a conventional PID control is adopted, there would be a serious overshoot in the system because of the affect of pure time lag. Therefore, a new solution is proposed: When to lower the temperature according to the technology curve, insert appropriate holding stage in the cooling process. Experiments show that the introduction of this new solution will significantly reduce the over-regulation in the fermentation process. This new solution can also be extended to other control systems which have big inertia or big lag controlled objects. Another example, that the detection lag does harm to the performance of control system, and for there is a serious lag in the temperature detection of fermentation process,...
Keywords/Search Tags:automation, experimental device, beer production process, undergraduate, graduate
PDF Full Text Request
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