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基于融合注意力时间卷积网络的烘丝出口含水率控制方法

Control method for moisture content in dried tobacco based on fused attention time convolution network

  • 摘要: 为解决HDT气流式烘丝机在烘丝过程中存在出口含水率控制精度低等问题,提出一种基于融合注意力时间卷积网络(Fused Attention Time Convolution Network,FATCN)的烘丝出口含水率控制方法。借助多元高斯分布检测和降噪自编码器对监测数据进行实时处理、特征衍生与增强,利用FATCN模型对监测数据进行实时判别,精准识别控制参数的调整时机和调整量,实现烘丝过程的自动化控制。以成都卷烟厂生产的2种牌号卷烟为对象对FATCN模型、PID+人工调节和卷积神经网络模型的控制效果进行对比测试,结果表明:FATCN相较于其他2种控制方式,出口含水率平均偏差分别降低约0.105和0.086,降幅分别为60%和55%左右;干头物料质量分别减少约15.8和15.1 kg,降幅分别为12.6%和12.1%左右。该方法可为提高烘丝出口含水率的稳定性和准确性提供支持。

     

    Abstract: A Fused Attention Time Convolution Network (FATCN) based control method was proposed to promote the control accuracy of moisture content in the output tobacco from an HDT pneumatic tobacco dryer. Real time data processing, feature derivation and enhancement are completed using multivariate Gaussian distribution detection and a noise reduction autoencoder. Using the FATCN model, the monitored data are evaluated real-timely and the adjustment time and amounts of the control parameters are accurately identified to achieve automatic control of the tobacco drying process. The control effects of FATCN model, PID+manual adjustment and convolutional neural network model were comparatively tested on two cigarette brands in Chengdu Cigarette Factory. The results showed that compared with the other two control methods, the average deviation of moisture content in the dried tobacco was reduced by 0.105 and 0.086 with the reduction degree of 60% and 55%, respectively; the amount of over-dried cut tobacco at the start stage of drying was reduced by 15.8 and 15.1 kg with the reduction degree of 12.6% and 12.1%, respectively, under the FATCH control method. This method provides support for promoting consistency and accuracy of moisture content in dried tobacco.

     

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