Research Of Monitoring And Controlling Technique In Beer's Production Process

In many domestic beer factories, there are lots of disadventages during product, and these can't ensure the veracity of beer's producting craft that results into fluctuation of beer's quality and is difficult to enlarge reproduction's scale. Aiming at the situation, the thesis is based on the main engineer process—fermentation to discuss the method of Computer monitoring and controlling as wel as tempreture controlling. The thesis also designs a optimal control programme which is suit to the middle or small beer facotries.It may cause enterprise's technology advancement, production management as well as market competition ability achieves a new level.This project has designed the industrial control computer and the programmable controller composes the distributed computer control system (IPC-PLC DCS); For the enhancement control reliability, the system uses two level of distributional control structures; The system's control software uses based on the Windows graphical interface configuration king software and the user interface is friendly which has the good operationality; Against a large inertia,big lag and serious nonlinear characteristics in beer fermentation process and the requirements of process to automatic control system,this thesis introduces the fuzzy intelligent controlling self—adaptive PID algorithmwhich is based on the bias and the bias's change trend.Othermore, the thesis also does many works on procedure of upper—computer and basic—controller so that The whole system design can be put into work immediately.The effect of the system indicates: the function of the system is very high reliability and practically, techniques advancement, and completely meets the demand of modem production.Furthermore it improves the demand of development. The system has many advantages such as adaptability and flexibility of the algorithms, higher precision control—the deviation with±0.4℃, the satisfactory operating results,good dynamic of fermentation process, small fluctuations in the production of beer, stability beer quality.