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    • 6. 发明申请
    • PARTIAL LEAST SQUARES BASED PAPER CURL AND TWIST MODELING, PREDICTION AND CONTROL
    • 基于部分最小二乘法的纸张和纸张建模,预测和控制
    • WO2004111332A3
    • 2005-06-02
    • PCT/US2004016537
    • 2004-05-26
    • ABB LTDAMIRTHALINGAM RAJA
    • AMIRTHALINGAM RAJA
    • D21G9/00G05B13/04G05B23/02
    • D21G9/0036G05B13/048
    • A method is described for using the partial least squares (PLS) technique for modeling, predicting and controlling curl and twist in a paper machine. The prediction variables to the model are selected quality control system measurements and paper machine variables. The selection is based on incremental error analysis of individual prediction variables and can be improved using score contribution analysis. The predicted variables to the model are the curl and twist measurements which are determined from the samples taken at the end of the reel. The PLS model is identified and used in an on-line framework and the model is continuously updated with new data as required. A control strategy to use the PLS model for controlling curl and twist is included. There is also described a method which uses as inputs to the model only the measurements from a fiber orientation sensor and the curl and twist measurements.
    • 描述了使用偏最小二乘法(PLS)技术来建模,预测和控制造纸机中的卷曲和扭曲的方法。 选择质量控制系统测量和造纸机变量的模型预测变量。 选择是基于各个预测变量的增量误差分析,并可以使用分数贡献分析进行改进。 模型的预测变量是从卷轴末端采集的样品确定的卷曲和扭曲测量。 PLS模型在在线框架中被识别和使用,并且根据需要使用新的数据不断更新模型。 包括使用PLS模型控制卷曲和扭曲的控制策略。 还描述了一种方法,其仅将模型用作来自纤维取向传感器的测量值以及卷曲和扭曲测量值。
    • 7. 发明申请
    • STEAM DISTRIBUTOR FOR STEAM SHOWERS
    • 蒸汽发生器的蒸汽分配器
    • WO2004072366A1
    • 2004-08-26
    • PCT/EP2004/001100
    • 2004-02-06
    • ABB LTD.
    • DUAN, ShizongJONES, Geoffrey, Arthur
    • D21F7/00
    • D21F7/008
    • A steam distributor (1) that uses a porous metal plate to replace the conventional screen plate (3) of a steam shower for distributing steam to a moving web (2) such as the web of a paper making machine. Steam showers using a steam distributor with this porous metal plate can deliver extremely uniform steam to the surface of a paper web. Profiling steam showers constructed by using an array of the steam distributors are able to deliver the best profiling results for various paper products. The porous metal plate can be considered as an equivalent of a screen plate with thousands of micro-orifices arranged tightly in both the machine direction and the CD direction.
    • 一种蒸汽分配器(1),其使用多孔金属板来代替用于将蒸汽分配到诸如造纸机的幅材的移动幅材(2)的蒸汽淋浴器的常规筛板(3)。 使用这种多孔金属板的蒸汽分配器的蒸汽淋浴器可以向纸幅表面提供非常均匀的蒸汽。 通过使用蒸汽分配器阵列构造的蒸汽淋浴能够为各种纸制品提供最佳的成型结果。 多孔金属板可以被认为是与机器方向和CD方向上紧密配置的数千个微孔的筛板相当的。