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环模制粒机是一个非线性、强耦合、大时滞、多变量的复杂控制对象,其主要被控变量是制粒机的制粒主电机电流和调质器出口的温度。制粒过程是现代饲料生产中最常见的工艺之一,为了获得质量稳定的产品和最大化的生产效率,制粒机调制温度以及主电机电流必须准确地控制在期望值附近。另外国内大多数制粒机采取人工操作方法。介绍了制粒机的温度电流控制回路,分析了其对象本身的耦合性与滞后性,设计了基于STM32的制粒机自动控制系统以及良好的控制算法,有效地解决上述所存在的问题,并对锅炉水箱对象(液位与温度)进行实验,取得良好的控制效果。
Ring mold granulator is a nonlinear, strong coupling, large time delay, multivariable complex control object, the main controlled variable granulator granulator main motor current and the conditioner outlet temperature. Granulation process is one of the most common processes in modern feed production. In order to obtain stable quality product and maximized production efficiency, pelletizer temperature and main motor current must be accurately controlled around the expected value. In addition most of the domestic granulator to take manual approach. The temperature current control loop of the granulator is introduced, the coupling and lag of the object itself are analyzed, the automatic control system of the granulator based on STM32 is designed and a good control algorithm is designed to effectively solve the above problems Boiler water tank object (level and temperature) experiment, and achieved good control effect.