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21. 发明授权

US06421575B1 Method and control arrangement for controlling sheet-making process 失效
标题翻译：控制制版过程的方法和控制布置
公开(公告)号：US06421575B1
公开(公告)日：2002-07-16
申请号：US09452397
申请日：1999-12-01
申请人： John Shakespeare
发明人： John Shakespeare
IPC分类号： G06F766
CPC分类号： D21G9/0027 , G01N33/346 , G05B17/02
摘要： The invention relates to a method and an arrangement for controlling a sheet-making process. In the solution, a sheet matching desired values is manufactured. A measuring unit measures the state of the process to produce one or more measurement value representing the state of the process. A comparator compares each measurement value with a corresponding desired value and, on the basis of the comparison, forms an error representing the difference between at least one measurement value and desired value. A control unit forms at least two control action candidates based on the error using at least two process models, of which at least one is a perturbed process model. A processing unit forms one control action from the control action candidates, with which control action the sheet-making process is controlled to produce a sheet matching the desired values.
摘要翻译：本发明涉及一种用于控制片材制作过程的方法和装置。在该解决方案中，制造匹配期望值的片材。测量单元测量过程的状态以产生表示过程状态的一个或多个测量值。比较器将每个测量值与相应的期望值进行比较，并且基于比较，形成表示至少一个测量值与期望值之间的差的误差。控制单元使用至少两个过程模型基于误差形成至少两个控制动作候选，其中至少一个是扰动过程模型。处理单元从控制动作候选形成一个控制动作，通过该控制动作候选来控制制片过程的控制动作以产生与期望值匹配的纸张。

22. 发明授权

US06343240B1 Method for identifying plural relations in a sheet manufacturing process 失效
标题翻译：用于识别片材制造过程中的多个关系的方法
公开(公告)号：US06343240B1
公开(公告)日：2002-01-29
申请号：US09141434
申请日：1998-08-27
申请人： John Shakespeare , Tapio Metsälä
发明人： John Shakespeare , Tapio Metsälä
IPC分类号： G06F766
CPC分类号： D21G9/0027 , G01N33/346
摘要： The invention relates to method for identifying plural relations in a sheet manufacturing process. Sheet properties are deduced from a response in a pseudo-property profile to a cyclic stimulation. A pseudo-property profile is calculated using a phase lag equal to half the stimulation cycle time, with and without stimulation. The properties of the sheet are deduced from the difference between an excited pseudo-property profile and a reference pseudo-property profile.
摘要翻译：本发明涉及在片材制造过程中识别多个关系的方法。纸张属性从伪属性轮廓中的响应推导到循环刺激。使用等于刺激周期时间的一半的相位滞后来计算伪属性轮廓，具有和不具有刺激。从激发的伪属性轮廓和参考伪属性轮廓之间的差异推导出片的属性。

23. 发明授权

US5943906A Method for operating a traversing sensor apparatus 失效
标题翻译：一种运行传感器装置的方法
公开(公告)号：US5943906A
公开(公告)日：1999-08-31
申请号：US928537
申请日：1997-09-12
申请人： John Shakespeare
发明人： John Shakespeare
IPC分类号： G01N33/34 , G01L5/04
CPC分类号： G01N33/346
摘要： Method for operating a traversing sensor apparatus, wherein the properties of a paper web are measured through traversing such that a measuring head is moved during the measurement in the cross-machine direction. The movement of the measuring head in the cross-machine direction is stopped above the paper web and data is collected for a certain period through measurement from an area narrower than the width of the paper web, whereafter the movement of the measuring head in the cross-machine direction is continued. The data collected from an area narrower than the width of the paper web is used to calculate MD and CD values and to determine the effect of harmonic variations.
摘要翻译：用于操作横动传感器装置的方法，其中通过横动测量纸幅的特性，使得在跨机器方向的测量期间使测量头移动。测量头在横向上移动停止在纸幅的上方，数据通过从比纸幅的宽度窄的区域进行测量而收集一定时间，此后测量头在十字架中的移动机器方向继续。从比纸幅宽度窄的区域收集的数据用于计算MD和CD值，并确定谐波变化的影响。

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