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基于点云重建和模糊神经网络的贮柜出料流量控制方法

Throughput control method for tobacco silos based on point cloud reconstruction and fuzzy neural network

  • 摘要: 贮柜是卷烟厂制丝车间用于存储烟草物料的重要设备,为解决其在传统供料方式下因流量波动大而导致喂料机等缓存设备存在启停频繁的问题,提出一种基于点云重建和模糊神经网络的贮柜出料流量控制方法。先利用安装在贮柜布料车上的二维激光雷达对贮柜内存储的烟草物料进行扫描以获取二维点云;然后对二维点云进行坐标系转换、滤波、配准和拼接等处理,重建物料的三维点云,并采用切片法获取物料体积的分布信息;最后利用模糊神经网络控制算法对贮柜底带电机的运行频率进行动态调整。以延吉卷烟厂制丝生产线为对象进行方法验证,结果表明:所建立的方法对贮柜内放置的标准箱的体积测量误差小于2.0%,对贮柜内存储的烟草物料的体积测量误差小于3.0%;应用该方法后,贮柜出料更加均匀,喂料机等设备的平均停机次数由13次/批次降低至9次/批次。该方法可为延长卷烟设备使用寿命提供技术支持。

     

    Abstract: Tobacco silos are important equipment used to store tobacco leaf materials in the primary department of a cigarette factory. In order to solve the problem of frequent start and stop of buffering equipment such as tobacco feeder due to large leaf throughput fluctuations under traditional leaf feeding mode, a control method for tobacco throughput from tobacco silos based on the point cloud reconstruction and fuzzy neural network was proposed. Firstly, a 2D laser radar installed on the spreading vehicle in the silo was used to scan the tobacco leaf materials stored in the silo to obtain their 2D point clouds. The acquired 2D point cloud was processed by converting into a coordinate system, followed by filtering, registration and splicing to reconstruct a corresponding 3D point cloud of the material. The distribution information of the material volume was obtained by the slicing method. Finally, the fuzzy neural network control algorithm was applied dynamically by adjusting the operating frequency of the bottom belt motor in the silo. The proposed method was verified on the primary production line in Yanji Cigarette Factory. The results showed that the volume measurement error of the method was less than 2.0% for the standard boxes placed in the silo and less than 3.0% for the leaf material stored in the silo. By using this method, the tobacco throughput from the silo was more uniform and the average downtime of the feeder and other equipment was reduced from 13 to 9 times per production batch. This method provides technical support for extending the life of cigarette makers.

     

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