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1. 发明授权

US07650195B2 Automated tuning of large-scale multivariable model predictive controllers for spatially-distributed processes 有权
标题翻译：用于空间分布式过程的大规模多变量模型预测控制器的自动调整
公开(公告)号：US07650195B2
公开(公告)日：2010-01-19
申请号：US11260809
申请日：2005-10-27
申请人： Junqiang Fan , Gregory E. Stewart
发明人： Junqiang Fan , Gregory E. Stewart
IPC分类号： G05B13/02
CPC分类号： D21G9/0045 , G05B13/042
摘要： An automated tuning method of a large-scale multivariable model predictive controller for multiple array papermaking machine cross-directional (CD) processes can significantly improve the performance of the controller over traditional controllers. Paper machine CD processes are large-scale spatially-distributed dynamical systems. Due to these systems' (almost) spatially invariant nature, the closed-loop transfer functions are approximated by transfer matrices with rectangular circulant matrix blocks, whose input and output singular vectors are the Fourier components of dimension equivalent to either number of actuators or number of measurements. This approximation enables the model predictive controller for these systems to be tuned by a numerical search over optimization weights in order to shape the closed-loop transfer functions in the two-dimensional frequency domain for performance and robustness. A novel scaling method is used for scaling the inputs and outputs of the multivariable system in the spatial frequency domain.
摘要翻译：用于多阵列造纸机横向（CD）过程的大规模多变量模型预测控制器的自动调整方法可以显着提高控制器与传统控制器的性能。造纸机CD过程是大规模的空间分布式动力系统。由于这些系统（几乎）空间不变性质，闭环传递函数由具有矩形循环矩阵块的传递矩阵近似，其输入和输出奇异矢量是等效于执行器的数量或数量的傅立叶分量测量。这种近似使得能够通过优化权重的数值搜索来调整这些系统的模型预测控制器，以便在二维频域中形成闭环传递函数以获得性能和鲁棒性。一种新的缩放方法用于缩放空间频域中多变量系统的输入和输出。

2. 发明授权

US07577483B2 Automatic tuning method for multivariable model predictive controllers 有权
标题翻译：多变量模型预测控制器的自动调谐方法
公开(公告)号：US07577483B2
公开(公告)日：2009-08-18
申请号：US11442572
申请日：2006-05-25
申请人： Junqiang Fan , Gregory E. Stewart
发明人： Junqiang Fan , Gregory E. Stewart
IPC分类号： G06F19/00
CPC分类号： G05B13/048 , G05B11/32
摘要： A fast and reliable technique for tuning multivariable model predictive controllers (MPCs) that accounts for performance and robustness is provided. Specifically, the technique automatically yields tuning weights for the MPC based on performance and robustness requirements. The tuning weights are parameters of closed-loop transfer functions which are directly linked to performance and robustness requirements. Automatically searching the tuning parameters in their proper ranges assures that the controller is optimal and robust. This technique will deliver the traditional requirements of stability, performance and robustness, while at the same time enabling users to design their closed-loop behavior in terms of the physical domain. The method permits the user to favor one measurement over another, or to use one actuator more than another.
摘要翻译：提供了一种用于调整考虑性能和鲁棒性的多变量模型预测控制器（MPC）的快速可靠的技术。具体来说，该技术基于性能和鲁棒性要求自动产生MPC的调谐权重。调谐权重是与性能和鲁棒性要求直接相关的闭环传递函数的参数。自动搜索调谐参数在适当的范围内，确保控制器是最佳和稳健的。这种技术将提供稳定性，性能和鲁棒性的传统要求，同时使用户能够根据物理域设计闭环行为。该方法允许用户倾向于一次测量超过另一个，或者使用一个致动器多于另一个。

3. 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。

4. 发明申请

US20070276512A1 Automatic tuning method for multivariable model predictive controllers 有权
标题翻译：多变量模型预测控制器的自动调谐方法
公开(公告)号：US20070276512A1
公开(公告)日：2007-11-29
申请号：US11442572
申请日：2006-05-25
申请人： Junqiang Fan , Gregory E. Stewart
发明人： Junqiang Fan , Gregory E. Stewart
IPC分类号： G05B13/02
CPC分类号： G05B13/048 , G05B11/32
摘要： A fast and reliable technique for tuning multivariable model predictive controllers (MPCs) that accounts for performance and robustness is provided. Specifically, the technique automatically yields tuning weights for the MPC based on performance and robustness requirements. The tuning weights are parameters of closed-loop transfer functions which are directly linked to performance and robustness requirements. Automatically searching the tuning parameters in their proper ranges assures that the controller is optimal and robust. This technique will deliver the traditional requirements of stability, performance and robustness, while at the same time enabling users to design their closed-loop behavior in terms of the physical domain. The method permits the user to favor one measurement over another, or to use one actuator more than another.
摘要翻译：提供了一种用于调整考虑性能和鲁棒性的多变量模型预测控制器（MPC）的快速可靠的技术。具体来说，该技术基于性能和鲁棒性要求自动产生MPC的调谐权重。调谐权重是与性能和鲁棒性要求直接相关的闭环传递函数的参数。自动搜索调谐参数在适当的范围内，确保控制器是最佳和稳健的。这种技术将提供稳定性，性能和鲁棒性的传统要求，同时使用户能够根据物理域设计闭环行为。该方法允许用户倾向于一次测量超过另一个，或者使用一个致动器多于另一个。

5. 发明授权

US09223301B2 Active cloud point controller for refining applications and related method 有权
标题翻译：活动云点控制器用于精炼应用及相关方法
公开(公告)号：US09223301B2
公开(公告)日：2015-12-29
申请号：US12763015
申请日：2010-04-19
申请人： Gregory E. Stewart , Jeffry T. Donner , Sebastien Tixier , Frank M. Haran , Charles P. Luebke
发明人： Gregory E. Stewart , Jeffry T. Donner , Sebastien Tixier , Frank M. Haran , Charles P. Luebke
IPC分类号： G05B21/00 , G05B13/04
CPC分类号： G05B13/048 , Y02P30/20
摘要： A method includes receiving a measurement associated with a cloud point of a biofuel being produced in a refining system. The method also includes determining how to adjust the refining system based on a desired cloud point of the biofuel and the measurement associated with the cloud point. The method further includes outputting a control signal to adjust the refining system based on the determination. Determining how to adjust the refining system could include determining how to adjust an inlet temperature of a reactor in the refining system. The reactor could represent an isomerization reactor, and a heater could heat material entering the isomerization reactor. Determining how to adjust the inlet temperature of the reactor could include determining how to adjust operation of the heater. A model predictive control (MPC) technique could be used to determine how to adjust the inlet temperature of the isomerization reactor.
摘要翻译：一种方法包括接收与在精炼系统中生产的生物燃料的浊点相关联的测量。该方法还包括基于生物燃料的期望浊点和与浊点相关联的测量来确定如何调整精炼系统。该方法还包括基于该确定输出控制信号以调节精炼系统。确定如何调整精炼系统可以包括确定如何调节精炼系统中的反应器的入口温度。反应器可以代表异构化反应器，并且加热器可以加热进入异构化反应器的材料。确定如何调节反应堆的入口温度可能包括确定如何调整加热器的运行。可以使用模型预测控制（MPC）技术来确定如何调整异构化反应器的入口温度。

6. 发明申请

US20120173023A1 APPARATUS AND METHOD FOR CONTROLLING AUTOTROPH CULTIVATION 有权
标题翻译：用于控制自动生成的装置和方法
公开(公告)号：US20120173023A1
公开(公告)日：2012-07-05
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： G05B21/00
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整，以将溶解的二氧化碳浓度驱使到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。

7. 发明授权

US08109255B2 Engine controller 有权
标题翻译：发动机控制器
公开(公告)号：US08109255B2
公开(公告)日：2012-02-07
申请号：US12973704
申请日：2010-12-20
申请人： Gregory E. Stewart , Michael L. Rhodes
发明人： Gregory E. Stewart , Michael L. Rhodes
IPC分类号： F02D41/00
CPC分类号： F02D41/146 , F02D31/007 , F02D41/1401 , F02D41/1406 , F02D41/1467 , F02D41/402 , F02D2041/1412 , F02D2041/1415 , F02D2041/1416 , F02D2041/1433
摘要： A system for controlling fuel to an engine to minimize emissions in an exhaust of the engine. There may be a controller connected to an actuator, for example a fuel control actuator, of the engine and to emissions sensors, such as an NOx and/or PM sensor, proximate to an exhaust output of the engine. The controller, for example a speed controller, may have an input connected to an output of a pedal or desired speed setting mechanism. A speed sensor at a power output of the engine may be connected to an input of the controller.
摘要翻译：一种用于控制发动机的燃料以最小化发动机排气中的排放物的系统。可以存在连接到发动机的致动器（例如燃料控制致动器）和靠近发动机的排气输出的诸如NOx和/或PM传感器的排放传感器的控制器。控制器，例如速度控制器，可以具有连接到踏板或期望速度设定机构的输出的输入。发动机功率输出的速度传感器可以连接到控制器的输入端。

8. 发明申请

US20110295390A1 APPARATUS AND METHOD FOR MODELING AND CONTROL OF CROSS-DIRECTION FIBER ORIENTATION PROCESSES 有权
标题翻译：交叉光纤定向方法的建模与控制方法
公开(公告)号：US20110295390A1
公开(公告)日：2011-12-01
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 , G06G7/48
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。

9. 发明申请

US20080125875A1 A SYSTEM FOR GAIN SCHEDULING CONTROL 有权
标题翻译：一种增益调度控制系统
公开(公告)号：US20080125875A1
公开(公告)日：2008-05-29
申请号：US11532081
申请日：2006-09-14
申请人： Gregory E. Stewart , Francesco Borrelli
发明人： Gregory E. Stewart , Francesco Borrelli
IPC分类号： G05B11/01
CPC分类号： G05B13/024 , G05B13/042
摘要： A system for controlling nonlinear plants which may be effected with gain scheduled feedback controllers. Several linear sub-controllers having various gains may be put together as one unit. The overall controller may be changed by switching from one sub-controller to another according to an exogenous or endogenous parameter. The signal to the switch may reflect operational ranges of the plant occurring at certain times and indicate the gain desired from the system relative to the output and input signals of the plant at those times. The advantages of the present approach may include a guarantee of nominal and robust stability both global and local, a permitting of the use of control structures that are familiar to industrial practitioners, and no requirement of advanced mathematical techniques for its implementation.
摘要翻译：一种用于控制非线性装置的系统，其可以通过增益调度的反馈控制器来实现。具有各种增益的几个线性子控制器可以作为一个单元组合在一起。根据外部或内生参数，可以通过从一个子控制器切换到另一个子控制器来改变总体控制器。到交换机的信号可以反映在某些时间发生的工厂的工作范围，并且指示系统相对于那些时间的工厂的输出和输入信号所需的增益。本方法的优点可能包括保证全球和地方的名义和稳定的稳定性，允许使用工业从业者熟悉的控制结构，并且不需要高级数学技术来实施。

10. 发明授权

US08151626B2 System and method for sensing high temperature particulate matter 有权
标题翻译：用于感测高温颗粒物的系统和方法
公开(公告)号：US08151626B2
公开(公告)日：2012-04-10
申请号：US12265583
申请日：2008-11-05
申请人： Brian C. Krafthefer , Gregory E. Stewart , Jeff Boehler , Matthew Below , Michael L. Rhodes
发明人： Brian C. Krafthefer , Gregory E. Stewart , Jeff Boehler , Matthew Below , Michael L. Rhodes
IPC分类号： G01N15/06 , B01D46/02 , F01N11/00
CPC分类号： F01N13/008 , B01D46/0063 , B01D46/0078 , B01D46/442 , B01D2279/30 , F01N3/0222 , F01N3/027 , F01N11/00 , F01N2240/20 , F01N2340/06 , F01N2560/05 , F01N2560/06 , F01N2560/20 , F02B37/00 , F23G2900/55002 , F23N5/003 , F23N2900/05004 , F23N2900/05005 , G01N15/0266 , Y02T10/144 , Y02T10/47 , Y02T50/677
摘要： Sensor apparatus includes a housing, a probe mounted to the housing, the probe including an elongate first part and a helical coil second part conductively coupled to each in series with first and second terminals at opposite ends thereof, the probe to be inserted into an exhaust stream in an exhaust corridor; and a circuit coupled to the first and second terminals of the sensor probe, to selectively operate the probe as a temperature sensor in a first mode and as a PM sensor in a second mode.
摘要翻译：传感器装置包括壳体，安装到壳体的探针，探针包括细长的第一部分和螺旋线圈第二部分，其导电耦合到每个与其相对端的第一和第二端子串联，待插入到排气口中的探针在排气走廊流; 以及耦合到传感器探针的第一和第二端子的电路，以选择性地将探头作为第一模式中的温度传感器操作，并将其作为第二模式的PM传感器。

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