旁路调节控制在连续式海参蒸煮设备上的应用研究

Application on sea cucumber cooking equipment's control based on bypass adjustment

传统海参蒸煮设备的温度控制采用定值控制,为解决其存在的调节能力差、超调量大和滞后大等问题,设计适用于海参蒸煮设备的蒸汽旁路调节系统,以实现蒸煮温度的精确控制;将连续式海参蒸煮设备等效转换为热力系统,建立传热计算模型及求解策略;将传热计算模型内嵌到控制算法中,以实现温度扰动的预测;利用建立的旁路调节的精确控制模型,实现连续式海参蒸煮设备温度的精确控制,并开展旁路调节控制的蒸煮温度控制以及品质影响分析的试验研究。结果表明:基于蒸汽旁路调节的海参蒸煮设备的温度控制具有超调量小、滞后小和调节能力强的优点,使得蒸煮后的海参获得较高的弹性和较低的硬度,保证蒸煮加工后海参的品质。

Traditional sea cucumber cooking equipment＇s temperature control was fixed value control,and there were a lot of problems such as poor regulating ability,large overshoot and control lag.In order to solving those problems,first of all,steam bypass adjusting system was designed for sea cucumber cooking equipment,in order to realizing cooking temperature＇s precise control.Secondly,the sea cucumber cooking equipment was converted to an equivalent heat transfer system,and then established its heat transfer computing model and solving strategy.Thirdly,the heat transfer computing model was embedded to control algorithm,temperature perturbation predicted by using heat transfer computing model,then sea cucumber equipment＇s temperature precise control was realized.Finally,experimental research on steam bypass adjustment precise control of sea cucumber cooking equipment was conducted,and its temperature control ability and impact on sea cucumber＇s quality were studied.Experimental results showed that sea cucumber cooking equipment＇s temperature control based on steam bypass adjustment had advantages such as small overshoot,small control lag and strong adjusting ability.It provided sea cucumber product with high elasticity and low harness,and ensured a better quality of cooking sea cucumber product.