大林-串级算法在啤酒糖化温度控制中的应用

Application of Dahlin-Cascade Algorithm to Control Beer Saccharification Temperature

啤酒生产工艺要求糖化温度要快速跟踪工艺设定曲线且无超调,而该对象具有大惯性滞后,并且过程中蒸汽压力波动较大,常规PID算法难以满足这些需求。将大林(Dahlin)算法与串级控制相结合,提出大林-串级(Dahlin-Cascade)控制结构,并加以应用。运行结果表明,该控制方法能够很好地满足工艺要求。而且由于跟踪速度的提高,缩短了温度上升时间,提高了生产效率。

Beer saccharification temperature should track the set curve lastly without overshoot in beer production. However, the process has great inertia lag and the steam pressure fluctuates sharply, the normal PID algorithm could not meet the requirements. Dahlin algorithm combined with Cascade control （Dahlin-Cascade control） was put forward and used in practice. The application results showed that the use of such method could satisfy the technical demands, shorten the rise time of temperature, and increase the production efficiency because of its fast follow-up tracking capability.