公开(公告)号：US06640152B1

公开(公告)日：2003-10-28

申请号：US09536107

申请日：2000-03-24

申请人： Shih-Chin Chen ,  Timothy F. Murphy

发明人： Shih-Chin Chen ,  Timothy F. Murphy

IPC分类号： G06F766

CPC分类号： D21G9/0027

摘要： Headbox transient responses for sheet weight and moisture are modeled as a combination of two sets of time constants and dead time delays. One set represents a shorter delay with faster response dynamics, the fast mode weight and moisture responses, and the other models the longer delay with slower dynamics, the slow mode weight and moisture responses. A weight and/or moisture transient model is then formed for headbox changes by combining the fast mode weight and moisture responses and the slow mode weight and moisture responses. Stock weight and moisture dynamic and delay time models are determined for operation of stock flow of the paper making machine and the stock flow is controlled in accordance with the stock weight and/or moisture models and the headbox weight transient and/or moisture transient model to compensate for weight and moisture changes in a web of paper being manufacture which weight and moisture changes result from headbox changes.

摘要翻译： 用于纸张重量和湿度的流浆箱瞬态响应被建模为两组时间常数和死区时间延迟的组合。 一组表示较短的延迟，具有更快的响应动力学，快速模式重量和水分响应，而其他模型具有较慢的动态延迟，慢模式重量和水分响应。 然后通过组合快速模式重量和湿度响应以及慢速模式重量和湿度响应，形成用于流浆箱变化的重量和/或湿度瞬态模型。 确定造纸机的库存流量的库存重量和湿度动态和延迟时间模型，并且根据库存重量和/或湿度模型和流浆箱重量瞬态和/或水分瞬态模型来控制库存流量 补偿正在制造的纸张中的重量和水分变化，其中流动箱变化导致重量和湿度变化。

公开(公告)号：US5893055A

公开(公告)日：1999-04-06

申请号：US865717

申请日：1997-05-30

申请人： Shih-Chin Chen

发明人： Shih-Chin Chen

IPC分类号： G01N21/89 ,  G01N33/34 ,  G06F17/00 ,  G05B13/00

CPC分类号： G01N33/346 ,  G01N21/89

摘要： A new two-dimensional (2D) variation modeling and control technique for a machine producing a web of material, such as paper, uses functional transformation with basis functions which are wavelets, preferably wavelets derived from and closely resembling the responses generated by actuation of cross direction (CD) actuators of the machine. By using the disclosed functional transformation together with carefully selected basis functions, memory and real-time processing requirements are substantially reduced so that practical controls can be readily implemented. In addition, the functional transformation technique of the present application expands conventional CD correction to also correct for a portion of the residual variations which, until now, have remained uncorrected. The new 2D profile is treated as the superposition of two main components: a pure machine direction (MD) variation component and a two-dimensional sheet variation component. The pure MD variation is identical to the conventional MD variation; however, the two-dimensional sheet variation represents the evolution of a sheet property being measured in both a temporal direction (TD) and a spatial direction (SD), i.e. it includes both the traditional pure CD profile and a portion of the residual variation. The TD is aligned with the MD and the SD is perpendicular to the TD or is aligned with the CD. The new 2D variation is controlled by a new 2D control arrangement which includes an optimal predictive SD controller and a model based TD controller to quickly achieve 2D web uniformity.

摘要翻译： 用于生产材料卷（如纸）的机器的新的二维（2D）变体建模和控制技术使用具有基函数的功能变换，其基本功能是小波，优选来自并非常类似于由交叉致动产生的响应的小波 方向（CD）执行机构。 通过使用所公开的功能变换以及仔细选择的基本功能，显着地减少了存储器和实时处理要求，从而可以容易地实现实际的控制。 此外，本申请的功能转换技术扩展了常规的CD校正，以便修正迄今为止尚未校正的残余变化的一部分。 新的2D轮廓被视为两个主要部件的叠加：纯机器方向（MD）变化部件和二维薄片变化部件。 纯MD变化与常规MD变化相同; 然而，二维薄片变化表示在时间方向（TD）和空间方向（SD）上测量的片材性质的演变，即它包括传统的纯CD轮廓和残余变化的一部分。 TD与MD对齐，SD与TD垂直，或与CD对齐。 新的2D变型由新的2D控制装置控制，其包括最佳预测SD控制器和基于模型的TD控制器以快速实现2D网均匀性。

公开(公告)号：US5715158A

公开(公告)日：1998-02-03

申请号：US656672

申请日：1996-05-31

申请人： Shih-Chin Chen

发明人： Shih-Chin Chen

IPC分类号： D21G9/00 ,  D21H23/78 ,  G05B13/04

CPC分类号： D21G9/0027 ,  D21H23/78 ,  G05B13/04

摘要： Sensors are spaced along an extended process from its beginning end to its finishing end. Each sensor is associated with a parallel inferential control loop (PICL) and generates an actual measurement signal for a portion of the process. Each PICL includes a process model emulating the sensed portion of the process with the process models being cascaded from the beginning end through and including the finishing end. Each PICL generates a loop control signal corresponding to its sensed portion of process with the loop control signals from the PICLs being summed to generate a total control signal which controls a control element at the beginning end of the process and also is received by the first or most up-stream process model. The process models produce expected measurement signals which are combined with the actual measurement signals to determine difference signals for each PICL which includes a reset model emulating the sensed portion of the process. Each reset model receives a reset input signal from a preceding PICL and generates a reset output signal to decouple control of preceding PICLs from the PICL receiving the reset input signal. One or more of the PICLs can be disabled provided its deviation signal and setpoint signal are nullified, its reset output signal is routed to be the reset input signal for the succeeding PICL and any setpoint signal for the loop is converted and transferred from the disabled loop to a preceding loop.

摘要翻译： 传感器沿着从其起始端到终点的延伸过程间隔开。 每个传感器与并行推理控制回路（PICL）相关联，并为过程的一部分生成实际的测量信号。 每个PICL包括仿真过程的感测部分的过程模型，其中过程模型从始端通过并包括整理结束级联。 每个PICL产生对应于其感测到的部分处理的环路控制信号，其中来自PICL的环路控制信号相加以产生控制在处理开始端的控制元件的总控制信号，并且还由第一或 大多数上游流程模型。 过程模型产生与实际测量信号组合的预期测量信号，以确定每个PICL的差分信号，其包括模拟感测部分过程的复位模型。 每个复位模型接收来自先前PICL的复位输入信号，并产生复位输出信号，以将先前PICL的控制与接收复位输入信号的PICL去耦。 一个或多个PICL可以被禁用，只要其偏差信号和设定点信号无效，其复位输出信号被路由为后续PICL的复位输入信号，并且环路的任何设定点信号被转换并从禁止环路传输 到前一循环。

公开(公告)号：US5122963A

公开(公告)日：1992-06-16

申请号：US489497

申请日：1990-03-07

申请人： Shih-Chin Chen

发明人： Shih-Chin Chen

IPC分类号： D21G9/00 ,  G01N33/34

CPC分类号： D21G9/0009 ,  G01N33/346

摘要： A standard control signal for a web forming machine is temporarily interrupted and replaced by a perturbing signal or signgals which are applied to one, a grouping, or all of a series of actuation cells of the web forming machine. One or more actuation cells are driven with an alternating perturbing signal(s) which generate a corresponding action in the actuation cell(s). The perturbing signal(s) alternates from a neutral position of the cell and is selected to minimize means effects over any given period of time. The effects of the alternating signal(s) on the web appear within the area of the web which is affected by the actuation cell(s) such that the mapping and the response of the actuation cell(s) can be determined by monitoring that poriton of the web which is formed while the alternating signal(s) is applied to the actuation cell(s). The mapping(s) and/or response(s) of the actuation cell(s) are obtained by correlating the perturbing signal(s) and a web property signal or profile signal obtained by monitoring the web formed by the machine. The perturbing signal(s) is defined by a pseudo-random binary sequence with multiple signals being selected to be statistically independent of one another. To ensure that the web is not perturbed beyond defined specifications, the perturbing signal preferably is gradually increased in amplitude and is terminated individually for each actuation cell upon reaching a usable amplitude.

摘要翻译： 纸幅成型机的标准控制信号被暂时中断，并被施加到卷筒纸成型机的一个，一组或全部的一系列致动单元的干扰信号或符号代替。 用交替扰动信号驱动一个或多个致动单元，该信号在致动单元中产生相应的动作。 扰动信号从单元的中性位置交替并且被选择为使得在任何给定时间段内的均值效应最小化。 交替信号在纤维网上的影响出现在纤维网的受致动单元影响的区域内，使得致动单元的映射和响应可以通过监测该孔 在将交变信号施加到致动单元时形成的腹板。 通过将扰动信号和通过监测由机器形成的幅材获得的网状物信号或轮廓信号相关联来获得致动单元的映射和/或响应。 扰动信号由伪随机二进制序列定义，其中多个信号被选择为在统计学上彼此独立。 为了确保网络不受超出规定的规格的干扰，扰动信号优选地在幅度上逐渐增加，并且在达到可用幅度时针对每个致动单元单独终止。

公开(公告)号：US20110297947A1

公开(公告)日：2011-12-08

申请号：US13214228

申请日：2011-08-21

申请人： Ming-Hung Shih ,  Shih-Chin Chen

发明人： Ming-Hung Shih ,  Shih-Chin Chen

IPC分类号： H01L29/786

CPC分类号： H01L27/1288 ,  G02F1/13458 ,  G02F1/136209 ,  G02F2001/136236 ,  H01L27/1214 ,  H01L27/124 ,  H01L27/1255

摘要： A pixel structure having the following structure is provided. A light-shielding layer with a flat layer covering thereon is disposed on a substrate. A channel layer, a data line and a first pad are disposed on the flat layer. A source and a drain partially cover two sides of the channel layer. A gate dielectric layer with a gate, a scan line and a second pad disposed thereon covering the channel layer, the source and the data line exposes the drain and the first pad. A protection layer covering the gate and the scan line exposes the drain, the first and second pads. A patterned transparent conductive layer includes a pixel electrode disposed on the protection layer, a first retain portion disposed on the first pad and a second retain portion disposed on the second pad.

摘要翻译： 提供具有以下结构的像素结构。 覆盖有平坦层的遮光层设置在基板上。 通道层，数据线和第一焊盘设置在平坦层上。 源极和漏极部分地覆盖沟道层的两侧。 具有栅极，扫描线和布置在其上的第二焊盘的栅介质层覆盖沟道层，源极和数据线暴露漏极和第一焊盘。 覆盖栅极和扫描线的保护层暴露出漏极，第一和第二焊盘。 图案化的透明导电层包括设置在保护层上的像素电极，设置在第一焊盘上的第一保持部分和设置在第二焊盘上的第二保持部分。

公开(公告)号：US20090057666A1

公开(公告)日：2009-03-05

申请号：US12055326

申请日：2008-03-26

申请人： Ming-Hung Shih ,  Shih-Chin Chen

发明人： Ming-Hung Shih ,  Shih-Chin Chen

IPC分类号： H01L31/0232 ,  H01L21/02

CPC分类号： H01L27/1288 ,  G02F1/13458 ,  G02F1/136209 ,  G02F2001/136236 ,  H01L27/1214 ,  H01L27/124 ,  H01L27/1255

摘要： A pixel structure and a fabrication method thereof are provided. A substrate with a light-shielding layer and a flat layer formed thereon is provided. A first photomask process is conducted to pattern a first metal layer and a semiconductor layer for forming a source, a drain, a channel layer, a data line and a first pad. A second photomask process is conducted to pattern the protection layer, the second metal layer and the gate dielectric layer for forming a gate, a scan line and a second pad, and a part of the drain is exposed. A third photomask process is conducted to pattern a transparent conductive layer for forming a pixel electrode.

摘要翻译： 提供了像素结构及其制造方法。 提供具有遮光层和形成在其上的平坦层的基板。 进行第一光掩模工艺以对用于形成源极，漏极，沟道层，数据线和第一焊盘的第一金属层和半导体层进行图案化。 进行第二光掩模处理以对用于形成栅极，扫描线和第二焊盘的保护层，第二金属层和栅极电介质层进行图案化，并且漏极的一部分被暴露。 进行第三光掩模工艺以对用于形成像素电极的透明导电层进行图案化。

公开(公告)号：US06564117B1

公开(公告)日：2003-05-13

申请号：US09592921

申请日：2000-06-13

申请人： Shih-Chin Chen ,  Peter Quang Tran

发明人： Shih-Chin Chen ,  Peter Quang Tran

IPC分类号： G06F766

CPC分类号： D21G9/0027

摘要： The CD profile of a web of material being produced is monitored and controlled to update CD control settings on-line so that changes in the operation of a machine manufacturing the web can be corrected before significant profile deviations from a desired CD profile target result. Detected variances in the profile that satisfy a search criteria initiate searches for improved CD control settings. The CD control of the present application recognizes CD actuator mapping misalignments, determines improved CD control settings and applies the improved CD control settings to fine tune a CD controller and thereby improve upon or correct mapping misalignments. The CD control of the present application also recognizes non-smoothness of the setpoints of the CD actuators and controls the smoothness of the setpoints. Recognition and correction of either CD actuator mapping misalignments or CD actuator setpoint smoothness or both can be performed by the automated optimization of the present application.

摘要翻译： 监视和控制正在生产的材料网的CD轮廓，以在线更新CD控制设置，使得可以在显着的轮廓偏离期望的CD轮廓目标结果之前校正制造网的机器的操作的变化。 符合搜索条件的配置文件中检测到的差异将启动搜索以改进CD控制设置。 本应用程序的CD控制识别CD致动器映射未对准，确定改进的CD控制设置并应用改进的CD控制设置以微调CD控制器，从而改进或校正映射未对准。 本申请的CD控制还识别CD致动器的设定点的不平滑度并且控制设定点的平滑度。 可以通过本申请的自动优化来执行CD执行器映射未对准或CD致动器设定值平滑度的识别和校正。

公开(公告)号：US08209048B2

公开(公告)日：2012-06-26

申请号：US12352328

申请日：2009-01-12

申请人： Andreas Zehnpfund ,  Shih-Chin Chen ,  Jonas Berggren

发明人： Andreas Zehnpfund ,  Shih-Chin Chen ,  Jonas Berggren

IPC分类号： G06F19/00

CPC分类号： D21G9/0027

摘要： A method and apparatus for generating a comprehensive response model for a sheet forming machine are provided. A finite number of critical points and a response type are used to create a continuous response profile for each actuator zone. The continuous response profile for each actuator zone is discretized into a discrete response profile based on the resolution appropriate for an application. A multi-zone response model for each pair of actuator set and sheet property profile is created from the discretized response profile of the actuator zones in the actuator set. The comprehensive response model for a multivariable sheet-forming machine is created from a collection of multi-zone response models for multiple pairs of actuator sets and sheet property profiles.

摘要翻译： 提供了一种用于生成片材成形机的综合响应模型的方法和装置。 使用有限数量的临界点和响应类型来为每个执行器区域创建连续响应曲线。 基于适用于应用的分辨率，将每个致动器区域的连续响应曲线离散化为离散响应曲线。 由致动器组中的致动器区域的离散响应曲线创建用于每对致动器组和片材性质轮廓的多区域响应模型。 多变量纸张成型机的综合响应模型是从多对执行器集合和纸张属性轮廓的多区域响应模型的集合创建的。

公开(公告)号：US06233495B1

公开(公告)日：2001-05-15

申请号：US09096622

申请日：1998-06-12

申请人： Shih-Chin Chen

发明人： Shih-Chin Chen

IPC分类号： G06F1900

CPC分类号： D21G9/0027 ,  G01N33/346

摘要： A plurality of random probing sequences are used to perturb a corresponding plurality of cross-machine direction (CD) actuators of a web manufacturing machine. The web of sheet material is measured as the CD actuators are perturbed. The global process machine direction (MD) dynamics is estimated and a CD response is estimated for each of the plurality of CD actuators using the plurality of random probing sequences, measurements of the web of sheet material and the estimated global process MD dynamics. The estimated global process MD dynamics and the estimated CD responses form 2D responses for the plurality of CD actuators. To refine the 2D responses, the estimates of global process MD dynamics, and CD responses for each of the plurality of CD actuators are iterated. The actuator dynamics of the plurality of CD actuators may also be estimated and used in the estimates of the global process MD dynamics of the plurality of CD actuators and CD responses for each of the plurality of CD actuators. Variations that are not associated with actuator responses are removed from the estimated CD responses, for example by filtering. The estimated CD responses may be further refined by selecting one of the CD responses as a reference response. All remaining CD responses are shifted into alignment with the reference response to determine relative CD response locations and to define a group of overlapping CD responses. Using iterative techniques, a mean response is determined from a group of overlapping CD responses and variation bounds are set above and below the mean response. A family of probable CD responses are generated within the variation bounds and a most probable response is selected from the family of probable responses for each CD actuator response. The CD response for each CD actuator is replaced with the most probable response shifted by an appropriate amount for each CD actuator and multiplied by an optimal gain.

公开(公告)号：US20120278032A1

公开(公告)日：2012-11-01

申请号：US13457870

申请日：2012-04-27

申请人： Shih-Chin Chen

发明人： Shih-Chin Chen

IPC分类号： G06F15/00

CPC分类号： D21G9/0009 ,  G01N21/86 ,  G01N21/8901 ,  G01N33/346

摘要： CD variations and/or MD variations in scan measurements are determined from spectral components of power spectra of scan measurements taken using two or more scanning speeds. Dominant spectral components having the same spatial frequencies identify CD variations and dominant spectral components having the same temporal frequencies identify MD variations. Dominant spectral components are extracted from a noisy power spectrum (PS) by sorting all spectral components into an ordered PS. A first polynomial representing background noise of the ordered PS is used to set a first threshold. Spectral components of the ordered PS that exceed the first threshold are removed to form a noise PS. A second polynomial representing the noise PS is used to set a second threshold. Spectral components of the PS that exceed the second threshold are identified as dominant spectral components of the PS.

摘要翻译： 扫描测量中的CD变化和/或MD变化由使用两个或多个扫描速度进行的扫描测量的功率谱的光谱分量确定。 具有相同空间频率的主要谱分量识别CD变化，并且具有相同时间频率的主要谱分量标识MD变化。 通过将所有光谱分量排序成有序PS，从噪声功率谱（PS）中提取主要谱分量。 表示有序PS的背景噪声的第一多项式用于设定第一阈值。 去除超过第一阈值的有序PS的光谱分量以形成噪声PS。 表示噪声PS的第二多项式用于设定第二阈值。 超过第二阈值的PS的光谱分量被识别为PS的主要光谱分量。