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1.发明授权
公开(公告)号：US6052177A
公开(公告)日：2000-04-18
申请号：US988972
申请日：1997-12-11
IPC分类号： G01N21/64
CPC分类号： G01N21/8507
摘要： An apparatus is disclosed that develops output signals representing the degree of finished state of a processed medium during a process operation, such as the lignin content of wood pulp during delignification or, alternatively, the brightness during the bleaching process. Broad spectrum light energy from a light energy source is injected into the processed medium and the resultant reflected light energy is collected from a first light collector located near the point of injection and a second light collector located far from the point of injection. The light energy collected by each light collector is conveyed to a respective light analyzer associated with each light collector. Each light analyzer divides the detected light into distinct spectral wavelengths and generates output signals representing the intensity of light energy received in each wavelength. A feedback arrangement conducts the light energy emitted by the source to a location proximate the point of injection and then to a light analyzer. The light analyzer associated with the feedback arrangement divides the light emitted by the light source into distinct spectral wavelengths and generates output signals representing the intensity of the light energy emitted by the source in each wavelength. The output signals can be used by a process monitoring system to examine the degree of finished state of the processed medium.
摘要翻译： 公开了一种设备，其显示表示处理操作期间处理过的介质的完成状态程度的输出信号，例如脱木质期间木浆的木质素含量，或者漂白过程中的亮度。 将来自光能源的广谱光能量注入到处理过的介质中，并且从位于注入点附近的第一光收集器收集所得到的反射光能量，以及远离注入点的第二光收集器。 由每个光收集器收集的光能被传送到与每个光收集器相关联的相应的光分析器。 每个光分析器将检测到的光分成不同的光谱波长，并产生表示在每个波长中接收的光能的强度的输出信号。 反馈装置将源发射的光能传导到靠近注射点的位置，然后传输到光分析器。 与反馈装置相关联的光分析器将由光源发射的光分成不同的光谱波长，并产生表示源在每个波长中发射的光能的强度的输出信号。 输出信号可由过程监控系统用于检查处理介质的完成状态的程度。
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公开(公告)号：US5953111A
公开(公告)日：1999-09-14
申请号：US989720
申请日：1997-12-11
CPC分类号： G01N21/49
摘要： A system for the continual, real-time, in-situ generation of a Kappa number used by a process control system to control the delignification of papermaking pulps that includes injecting broad-spectrum light energy from a light energy source into the pulp and collecting the resultant reflected light energy from a near-and a far-light collector. The reflected light energy collected by the light collectors is analyzed by associated near- and far-light analyzers that generate analog output signals representing the intensity of selected wavelengths of light energy received by the light collectors. An included feedback arrangement conducts the light energy emitted by the light source to a location proximate the point of injection and then to an associated light analyzer that generates analog output signals representing the intensity of the light energy emitted by the light source in selected wavelengths. The output signals from the near-, far- and feedback-light analyzers are transmitted to a measurement processing system that converts the analog signals to digital signals and passes the signals to a measurement computer. The measurement computer, using preprogrammed algorithms, processes the received reflectance output signals along with previously-stored coefficient values that represent a model of the delignification or bleaching process, and along with configuration data, generates an output signal representing a Kappa number representation. The output signal from the measurement computer is converted by an input/output device into a signal form acceptable by the process control system, where it is used to control the delignification process in accordance to the Kappa number representation.
摘要翻译： 一种用于持续，实时，原位生成过程控制系统的卡帕数的系统，用于控制造纸纸浆的脱木质素，其包括从光能源将光谱光能注入到纸浆中并收集 从近光和远光收集器产生的反射光能。 通过相关的近光分析仪和远光分析仪分析由光收集器收集的反射光能，其产生表示由光收集器接收的所选波长的光能的强度的模拟输出信号。 所包括的反馈装置将由光源发射的光能传导到靠近注射点的位置，然后将相关联的光分析仪传送到相应的光分析器，该光分析器产生表示在所选择的波长中由光源发射的光能的强度的模拟输出信号。 来自近，远和反馈光分析仪的输出信号被传输到测量处理系统，该系统将模拟信号转换成数字信号，并将信号传递给测量计算机。 使用预编程算法的测量计算机处理所接收的反射率输出信号以及表示脱木素或漂白过程的模型的先前存储的系数值，并且与配置数据一起生成表示卡伯数表示的输出信号。 来自测量计算机的输出信号由输入/输出装置转换为过程控制系统可接受的信号形式，其中它用于根据卡伯数表示来控制脱木素过程。
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3.发明授权公开(公告)号：US07381303B2
公开(公告)日：2008-06-03
申请号：US11014336
申请日：2004-12-16
IPC分类号： D21C7/12
CPC分类号： D21D1/002
摘要： Thermomechanical pulp is an important process for producing fibrous mass used in papermaking. A two-level control strategy that stabilizes and optimizes the refining process has been developed. The Stabilization layer consists of a multivariable model predicative range controller that regulates the refiner line operations. The Quality Optimization layer provides the pulp quality control as measured by an online pulp quality (freeness, fibre length) sensor. This control startegy leverages the natural decoupling in the process. The modular design technique is able to handle multiple refiner lines that empty into a common latency chest. A global optimizer is also used to integrate and coordinate the two layers for enhanced constraint handling.
摘要翻译： 热机械纸浆是生产用于造纸的纤维块的重要工艺。 已经开发了稳定和优化精炼过程的两级控制策略。 稳定层由调整精炼机线路运行的多变量模型预测范围控制器组成。 质量优化层提供了通过在线纸浆质量（游离度，纤维长度）传感器测量的纸浆质量控制。 这种控制开始利用了过程中的自然去耦。 模块化设计技术能够处理多个精炼线，将其排入普通滞后的胸部。 全局优化器也用于整合和协调两层以增强约束处理。
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4.发明授权Method for producing continuous in-like kappa measurements for papermaking pulps 失效用于生产造纸纸浆连续在线卡帕测量的方法
公开(公告)号：US6069688A
公开(公告)日：2000-05-30
申请号：US988971
申请日：1997-12-11
CPC分类号： D21C7/12 , D21C9/1052 , G01N21/31
摘要： A method for the continual, real-time, in-situ generation of a Kappa number used by a process control system to control the delignification of papermaking pulps is disclosed. The method converts a plurality of analog output signals representing the intensities of spectral bands of light energy reflected by the pulp, and feedback analog output signals representing the intensities of spectral bands of light energy before they are injected into the pulp, into digital output values. The digital output values are then normalized in accordance to a normalization algorithm and stored with a time marker. The normalized values are used along with previously-stored coefficient values that represent a model of the delignification process for any particular point in time, and in accordance to the time marker and configuration data from a configuration computer, a Kappa number representation is calculated in accordance to a Kappa number-generating algorithm. The Kappa number representation is then converted into a signal form acceptable by the process control system and used to control the delignification process.
摘要翻译： 公开了一种用于持续地，实时地，原位地生成由过程控制系统控制造纸纸浆的脱木质素的卡伯值的方法。 该方法将表示由纸浆反射的光能的光谱带的强度的多个模拟输出信号转换为数字输出值，并将表示光能的光谱带的强度的模拟输出信号表示为数字输出值。 然后根据归一化算法对数字输出值进行归一化，并用时间标记存储。 标准化值与先前存储的系数值一起使用，该系数值表示任何特定时间点的脱木素过程的模型，并且根据来自组态计算机的时间标记和配置数据，按照计算卡伯数表示 到Kappa数生成算法。 然后将卡伯数表示法转换成过程控制系统可接受的信号形式，并用于控制脱木素过程。
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