Research on Modeling and Control Algorithm of Multi-effect Evaporation System
The control problem of multi-effect evaporation system is more complicated.The final effect discharge con-centration is an important index to detect product quality,which must be ensured to meet the requirements within a certain range.Taking the seven-effect cross-flow evaporation system in the production of high protein feed as an example,in or-der to avoid the loss and waste of raw material liquid caused by shutdown,the corresponding mathematical model is es-tablished according to the actual working condition and field data of the system.On the basis of this model,the conven-tional PID controller and fuzzy PID controller are designed using MATLAB/SIMULINK.By comparing the control effects of the two algorithms,it is proved that the fuzzy PID controller can adjust the PID parameters online and is more suitable for the multi-effect evaporation complex control system.
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