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1. 发明授权

US07689296B2 Apparatus and method for controlling a paper machine or other machine using measurement predictions based on asynchronous sensor information 有权
标题翻译：使用基于异步传感器信息的测量预测来控制造纸机或其他机器的装置和方法
公开(公告)号：US07689296B2
公开(公告)日：2010-03-30
申请号：US11413524
申请日：2006-04-28
申请人： Johan U. Backstrom , Junqiang Fan , Pengling He , Gregory E. Stewart
发明人： Johan U. Backstrom , Junqiang Fan , Pengling He , Gregory E. Stewart
IPC分类号： G05B13/04
CPC分类号： D21G9/0009 , G05B13/048
摘要： A method includes predicting measurements or states to be used by a controller to control a process. The predicted measurements or states are generated using a model of the process. The method also includes providing the predicted measurements or states to the controller such that the controller uses the predicted measurements or states at a sampling rate of the controller. In addition, the method includes updating at least some of the predicted measurements or states using measurements associated with a characteristic of an item from a sensor. The model may represent a discrete time model, and the method may also include generating the discrete time model using a continuous time model of the process. The measurements could be received from a plurality of sensors, where at least two of the sensors have different sampling times.
摘要翻译：一种方法包括预测由控制器使用以控制过程的测量或状态。使用该过程的模型生成预测的测量或状态。该方法还包括向控制器提供预测的测量或状态，使得控制器以控制器的采样率使用预测的测量或状态。此外，该方法包括使用与来自传感器的物品的特征相关联的测量来更新预测的测量或状态中的至少一些。该模型可以表示离散时间模型，并且该方法还可以包括使用该过程的连续时间模型来生成离散时间模型。可以从多个传感器接收测量值，其中至少两个传感器具有不同的采样时间。

2. 发明授权

US06807510B1 Model predictive controller for coordinated cross direction and machine direction control 有权
标题翻译：模型预测控制器，用于协调的横向和机器方向控制
公开(公告)号：US06807510B1
公开(公告)日：2004-10-19
申请号：US10430063
申请日：2003-05-05
申请人： Johan U. Backstrom , Pengling He
发明人： Johan U. Backstrom , Pengling He
IPC分类号： G06F1900
CPC分类号： D21G9/0027
摘要： A process for coordinated control of machine direction MD and cross direction CD actuators in a sheetmaking machine for manufacturing a sheet of material is disclosed. The process involves measuring a plurality of sheet properties at regular intervals to collect sheet measurement data. The sheet measurement data is manipulated to establish a plurality of sheet property measurement arrays, which are then mapped to a common resolution. The common resolution sheet property measurement arrays are concatenated into one larger one-dimensional common resolution measurement array. The common resolution measurement array and an array of past changes in actuator set point are used as inputs to a paper machine process model state observer to generate the estimated current internal state of the sheet manufacturing process. A plurality of future-sheet property target arrays are concatenated into one target array. The array of the estimated current internal state of the web manufacturing process and the paper machine process model are employed to generate an array of future predictions of sheet properties. The array of future predictions of sheet properties, the target array, object function weights, the last actuator set points, and hard constraints are inputted into an object function which is solved to yield optimal changes in the actuator set points for coordinated MD and CD control of the sheet making process.
摘要翻译：公开了一种用于制造一片材料的制版机器中的机器方向MD和横向CD致动器的协调控制的过程。该过程包括以规则的间隔测量多个片材属性以收集片材测量数据。操作片材测量数据以建立多个片材属性测量阵列，然后将其映射到共同的分辨率。公共分辨率表格属性测量阵列被连接成一个较大的一维共同分辨率测量阵列。共同分辨率测量阵列和执行机构设定点的过去变化的阵列被用作造纸机过程模型状态观测器的输入，以产生片材制造过程的估计的当前内部状态。多个未来表格属性目标数组被连接成一个目标数组。使用网络制造过程的估计当前内部状态的阵列和造纸机过程模型来生成未来预测片材属性的阵列。将片材属性，目标阵列，对象功能权重，最后执行器设定点和硬约束的未来预测数组输入到被解决的目标函数中，以产生用于协调的MD和CD控制的致动器设定点的最佳变化的制版过程。

3. 发明授权

US08195581B2 Apparatus and method for simulating multi-dimensional non-linear multivariable processes 有权
标题翻译：用于模拟多维非线性多变量过程的装置和方法
公开(公告)号：US08195581B2
公开(公告)日：2012-06-05
申请号：US11804811
申请日：2007-05-21
申请人： Johan U. Backstrom , Mattias Bjorklund , Cheul Chung
发明人： Johan U. Backstrom , Mattias Bjorklund , Cheul Chung
IPC分类号： G06G7/48
CPC分类号： G06F17/5009 , G06F2217/16 , G06F2217/42
摘要： A process simulator is provided for simulating the behavior of multi-dimensional non-linear multivariable processes. A multi-dimensional non-linear multivariable model of a process can be generated, such as by using smaller building blocks. One or more inputs are provided to the model, a behavior of the process is simulated in real-time using the model, and one or more outputs of the model are provided. The model could represent a two-dimensional non-linear multivariable model, and the one or more inputs to the model and/or the one or more outputs of the model could be array-based. The process simulator could be formed from multiple components, such as a regulatory loop simulator object, a process model object, a disturbance generator object, and a scanner simulator object. The arrangement of the objects can be flexible and configurable, such as by designing the objects in an object-oriented manner utilizing a sink/source architecture.
摘要翻译：提供了一种用于模拟多维非线性多变量过程行为的过程模拟器。可以生成过程的多维非线性多变量模型，例如通过使用较小的构建块。将一个或多个输入提供给模型，使用模型实时模拟过程的行为，并提供模型的一个或多个输出。该模型可以表示二维非线性多变量模型，并且模型的一个或多个输入和/或模型的一个或多个输出可以是基于数组的。过程模拟器可以由多个组件形成，例如调节循环模拟器对象，过程模型对象，扰动生成器对象和扫描器模拟器对象。对象的布置可以是灵活和可配置的，例如通过使用宿/源架构以面向对象的方式设计对象。

4. 发明授权

US07846299B2 Apparatus and method for controlling product grade changes in a paper machine or other machine 有权
标题翻译：用于控制造纸机或其他机器中的产品等级变化的装置和方法
公开(公告)号：US07846299B2
公开(公告)日：2010-12-07
申请号：US11796879
申请日：2007-04-30
申请人： Johan U. Backstrom , Mattias Bjorklund
发明人： Johan U. Backstrom , Mattias Bjorklund
IPC分类号： D21F7/00
CPC分类号： G05B13/041 , D21G9/0027 , D21G9/0036 , D21G9/0054 , Y10S162/10
摘要： A paper machine includes equipment for processing or producing a product in a continuous manner, such as a paper sheet. A grade change occurs when the equipment transitions from producing or processing a product having a first grade to producing or processing a product having a second grade. To support the grade change, a target for at least one controlled variable and a target for at least one manipulated variable are identified. The at least one manipulated variable and the at least one controlled variable are associated with the production of the product. A trajectory for the at least one manipulated variable and a corresponding trajectory for the at least one controlled variable are identified using the targets. The grade change is implemented using the trajectories so as to transition from production of the product having the first grade to production of the product having the second grade.
摘要翻译：造纸机包括用于连续地加工或生产产品的设备，例如纸张。当设备从生产或加工具有一级的产品转变为生产或加工具有二年级产品时，发生等级变化。为了支持等级变化，识别至少一个受控变量的目标和至少一个操纵变量的目标。所述至少一个操纵变量和所述至少一个受控变量与所述产品的生产相关联。使用目标来识别所述至少一个操纵变量的轨迹和用于所述至少一个受控变量的对应轨迹。使用轨迹实现等级变化，以便从具有一年级的产品的生产过渡到具有二年级的产品的生产。

5. 发明授权

US07496413B2 Apparatus and method for coordinating controllers to control a paper machine or other machine 有权
标题翻译：用于协调控制器以控制造纸机或其他机器的装置和方法
公开(公告)号：US07496413B2
公开(公告)日：2009-02-24
申请号：US11416876
申请日：2006-05-03
申请人： Junqiang Fan , Johan U. Backstrom
发明人： Junqiang Fan , Johan U. Backstrom
IPC分类号： G05B13/02 , G06F7/66
CPC分类号： G05B11/32 , G05B13/042
摘要： A method includes receiving measurement data from at least one sensor at a first controller. The measurement data is associated with a process. The method also includes receiving a first output signal at the first controller. The first output signal is generated by a second controller and affects the process. The method further includes determining how to control at least a portion of the process using the measurement data and the first output signal. In addition, the method includes providing a second output signal, where the second output signal is operable to control at least the portion of the process. The second controller may be operable to use the second output signal to generate the first output signal.
摘要翻译：一种方法包括从第一控制器处的至少一个传感器接收测量数据。测量数据与过程相关联。该方法还包括在第一控制器处接收第一输出信号。第一个输出信号由第二个控制器产生并影响该过程。该方法还包括确定如何使用测量数据和第一输出信号来控制处理的至少一部分。此外，该方法包括提供第二输出信号，其中第二输出信号可操作以至少控制该过程的一部分。第二控制器可操作以使用第二输出信号来产生第一输出信号。

6. 发明申请

US20080294419A1 Apparatus and method for simulating multi-dimensional non-linear multivariable processes 有权
标题翻译：用于模拟多维非线性多变量过程的装置和方法
公开(公告)号：US20080294419A1
公开(公告)日：2008-11-27
申请号：US11804811
申请日：2007-05-21
申请人： Johan U. Backstrom , Mattias Bjorklund , Cheul Chung
发明人： Johan U. Backstrom , Mattias Bjorklund , Cheul Chung
IPC分类号： G06F9/45
CPC分类号： G06F17/5009 , G06F2217/16 , G06F2217/42
摘要： A process simulator is provided for simulating the behavior of multi-dimensional non-linear multivariable processes. A multi-dimensional non-linear multivariable model of a process can be generated, such as by using smaller building blocks. One or more inputs are provided to the model, a behavior of the process is simulated in real-time using the model, and one or more outputs of the model are provided. The model could represent a two-dimensional non-linear multivariable model, and the one or more inputs to the model and/or the one or more outputs of the model could be array-based. The process simulator could be formed from multiple components, such as a regulatory loop simulator object, a process model object, a disturbance generator object, and a scanner simulator object. The arrangement of the objects can be flexible and configurable, such as by designing the objects in an object-oriented manner utilizing a sink/source architecture.
摘要翻译：提供了一种用于模拟多维非线性多变量过程行为的过程模拟器。可以生成过程的多维非线性多变量模型，例如通过使用较小的构建块。将一个或多个输入提供给模型，使用模型实时模拟过程的行为，并提供模型的一个或多个输出。该模型可以表示二维非线性多变量模型，并且模型的一个或多个输入和/或模型的一个或多个输出可以是基于数组的。过程模拟器可以由多个组件形成，例如调节循环模拟器对象，过程模型对象，扰动生成器对象和扫描器模拟器对象。对象的布置可以是灵活和可配置的，例如通过使用宿/源架构以面向对象的方式设计对象。

7. 发明授权

US08862249B2 Apparatus and method for modeling and control of cross-direction fiber orientation processes 有权
标题翻译：用于建模和控制横向纤维取向过程的装置和方法
公开(公告)号：US08862249B2
公开(公告)日：2014-10-14
申请号：US13028834
申请日：2011-02-16
申请人： Danlei Chu , Gregory E. Stewart , Cristian Gheorghe , Johan U. Backstrom
发明人： Danlei Chu , Gregory E. Stewart , Cristian Gheorghe , Johan U. Backstrom
IPC分类号： G05B13/02 , D21G9/00 , D21F7/06 , G05B17/02
CPC分类号： G05B17/02 , D21F7/06 , D21G9/0027
摘要： A method includes generating a model associated with cross-directional fiber orientation of a web, which includes identifying spatial frequency characteristics of a fiber orientation (FO) process. The method also includes providing the model for control of the FO process. Generating the model could include performing a spatial impulse test of the FO process, and long wavelength responses of the FO process can be identified by performing a spatial long wavelength test of the FO process or by retrieving information from a historical database. Actuator edge padding can be applied to the model in order to generate a controller model. A controller can be used to control the process based on the controller model. At least one parameter of the controller model can be dynamically adjusted during operation of the controller. The controller can change average fiber orientation angle profiles and twist profiles by only adjusting slice lip actuators in a headbox.
摘要翻译：一种方法包括产生与幅材的横向纤维取向相关联的模型，其包括识别纤维取向（FO）过程的空间频率特性。该方法还包括提供用于控制FO过程的模型。生成模型可以包括执行FO过程的空间冲击测试，并且可以通过执行FO过程的空间长波长测试或通过从历史数据库检索信息来识别FO过程的长波长响应。执行器边缘填充可应用于模型，以生成控制器模型。控制器可用于根据控制器模型控制过程。控制器模型的至少一个参数可以在控制器运行期间进行动态调整。控制器可以通过仅调节流浆箱中的片唇致动器来改变平均纤维取向角轮廓和扭曲轮廓。

8. 发明申请

US20130325148A1 EFFICIENT QUADRATIC PROGRAMMING (QP) SOLVER FOR PROCESS CONTROL AND OPTIMIZATION 有权
标题翻译：有效的四元编程（QP）过程控制和优化解决方案
公开(公告)号：US20130325148A1
公开(公告)日：2013-12-05
申请号：US13485594
申请日：2012-05-31
申请人： Ghulam Mustafa , Jiadong Wang , Tongwen Chen , Danlei Chu , Johan U. Backstrom
发明人： Ghulam Mustafa , Jiadong Wang , Tongwen Chen , Danlei Chu , Johan U. Backstrom
IPC分类号： G05B13/02
CPC分类号： G05B13/048
摘要： A method includes identifying an initial solution to a quadratic programming (QP) problem associated with a process. The method also includes performing an iterative procedure having one or more iterations. Each iteration includes determining whether any constraint associated with the process is violated in the solution. Each iteration also includes selecting a violated constraint, determining a step direction and a step length associated with the selected violated constraint, and updating the solution based on the step direction and the step length. Determining the step direction and the step length includes using a Schur complement based on an active set of constraints associated with the solution. The Schur complement is nonsingular during all iterations of the iterative procedure except when the active set is empty.
摘要翻译：一种方法包括识别与过程相关联的二次规划（QP）问题的初始解决方案。该方法还包括执行具有一个或多个迭代的迭代过程。每个迭代包括确定解决方案中是否违反与进程相关联的约束。每个迭代还包括选择违反的约束，确定与所选择的违反约束相关联的步长方向和步长，以及基于步长方向和步长来更新解。确定步骤方向和步长包括使用基于与该解决方案相关联的一组有效约束的Schur补码。在迭代过程的所有迭代期间，Schur补码是非奇异的，除非活动集为空。

9. 发明授权

US08600525B1 Efficient quadratic programming (QP) solver for process control and optimization 有权
标题翻译：用于过程控制和优化的高效二次规划（QP）求解器
公开(公告)号：US08600525B1
公开(公告)日：2013-12-03
申请号：US13485594
申请日：2012-05-31
申请人： Ghulam Mustafa , Jiadong Wang , Tongwen Chen , Danlei Chu , Johan U. Backstrom
发明人： Ghulam Mustafa , Jiadong Wang , Tongwen Chen , Danlei Chu , Johan U. Backstrom
IPC分类号： G05B15/00 , G05B13/02
CPC分类号： G05B13/048
摘要： A method includes identifying an initial solution to a quadratic programming (QP) problem associated with a process. The method also includes performing an iterative procedure having one or more iterations. Each iteration includes determining whether any constraint associated with the process is violated in the solution. Each iteration also includes selecting a violated constraint, determining a step direction and a step length associated with the selected violated constraint, and updating the solution based on the step direction and the step length. Determining the step direction and the step length includes using a Schur complement based on an active set of constraints associated with the solution. The Schur complement is nonsingular during all iterations of the iterative procedure except when the active set is empty.
摘要翻译：一种方法包括识别与过程相关联的二次规划（QP）问题的初始解决方案。该方法还包括执行具有一个或多个迭代的迭代过程。每个迭代包括确定解决方案中是否违反与进程相关联的约束。每个迭代还包括选择违反的约束，确定与所选择的违反约束相关联的步长方向和步长，以及基于步长方向和步长来更新解。确定步骤方向和步长包括使用基于与该解决方案相关联的一组有效约束的Schur补码。在迭代过程的所有迭代期间，Schur补码是非奇异的，除非活动集为空。

10. 发明授权

US08478444B2 Apparatus and method for controlling autotroph cultivation 有权
标题翻译：用于控制自养培养的装置和方法
公开(公告)号：US08478444B2
公开(公告)日：2013-07-02
申请号：US12985061
申请日：2011-01-05
申请人： Adrian M. Fuxman , Sebastien Tixier , Gregory E. Stewart , Frank M. Haran , Johan U. Backstrom , Kelsey Gerbrandt
发明人： Adrian M. Fuxman , Sebastien Tixier , Gregory E. Stewart , Frank M. Haran , Johan U. Backstrom , Kelsey Gerbrandt
IPC分类号： G01N15/06 , G01N33/00 , G01N33/48
CPC分类号： C12M41/48 , C12M21/02 , C12M41/12 , C12M41/26 , C12M41/34 , C12M41/42 , G05B13/048 , G05B2219/2605
摘要： A method includes receiving at least one measurement of a dissolved carbon dioxide concentration of a mixture of fluid containing an autotrophic organism. The method also includes determining an adjustment to one or more manipulated variables using the at least one measurement. The method further includes generating one or more signals to modify the one or more manipulated variables based on the determined adjustment. The one or more manipulated variables could include a carbon dioxide flow rate, an air flow rate, a water temperature, and an agitation level for the mixture. At least one model relates the dissolved carbon dioxide concentration to one or more manipulated variables, and the adjustment could be determined by using the at least one model to drive the dissolved carbon dioxide concentration to at least one target that optimize a goal function. The goal function could be to optimize biomass growth rate, nutrient removal and/or lipid production.
摘要翻译：一种方法包括接收含有自养生物的流体混合物的溶解二氧化碳浓度的至少一个测量值。该方法还包括使用至少一个测量来确定对一个或多个操纵变量的调整。该方法还包括基于所确定的调整产生一个或多个信号以修改一个或多个操纵变量。一个或多个操纵变量可以包括二氧化碳流速，空气流速，水温和混合物的搅拌水平。至少一个模型将溶解的二氧化碳浓度与一个或多个操作变量相关联，并且可以通过使用至少一个模型来确定调节，以将溶解的二氧化碳浓度驱使至优化目标函数的至少一个目标。目标函数可以是优化生物量生长速率，营养物去除和/或脂质生产。

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