公开(公告)号：US09170572B2

公开(公告)日：2015-10-27

申请号：US13177356

申请日：2011-07-06

申请人： Ward MacArthur ,  Sriram Hallihole ,  Ranganathan Srinivasan ,  Madhukar Madhavamurthy Gundappa ,  Mandar Subhash Vartak ,  Gobinath Pandurangan ,  S. Chandrakanth Vittal ,  Lucy Ning Liu ,  Sanjay Kantilal Dave ,  Avijit Das ,  Sreesathya Sathyabhama Sreekantan ,  Roshan Yohannan ,  Rajni Jain

发明人： Ward MacArthur ,  Sriram Hallihole ,  Ranganathan Srinivasan ,  Madhukar Madhavamurthy Gundappa ,  Mandar Subhash Vartak ,  Gobinath Pandurangan ,  S. Chandrakanth Vittal ,  Lucy Ning Liu ,  Sanjay Kantilal Dave ,  Avijit Das ,  Sreesathya Sathyabhama Sreekantan ,  Roshan Yohannan ,  Rajni Jain

IPC分类号： G05B13/02 ,  G06G7/48 ,  G05B13/04 ,  G06F17/50

CPC分类号： G05B13/04 ,  G06F17/50 ,  G06F17/5004

摘要： A method of dynamic model selection for hybrid linear/non-linear process control includes developing a plurality of process models including at least one linear process model and at least one non-linear process model from inputs including dynamic process data from a processing system that runs a physical process. At least two of the plurality of process models are selected based on a performance comparison based on at least one metric, wherein the selected process models number less than a number of the plurality of process models received. A multi-model controller is generated that includes the selected process models. The physical process is simulated using the multi-model controller by applying the selected process models to obtain closed loop performance test data for each of the selected models. The performance test data is compared. A selected process model is then selected.

摘要翻译： 用于混合线性/非线性过程控制的动态模型选择的方法包括开发包括至少一个线性过程模型和来自输入的至少一个非线性过程模型的多个过程模型，所述过程模型包括来自运行的处理系统的动态过程数据 一个物理过程。 基于至少一个度量的性能比较来选择多个过程模型中的至少两个，其中所选择的过程模型小于所接收的多个过程模型的数量。 生成包含所选过程模型的多模型控制器。 通过应用所选择的过程模型，使用多模型控制器来模拟物理过程，以获得每个所选模型的闭环性能测试数据。 比较性能测试数据。 然后选择所选的过程模型。

公开(公告)号：US07797082B2

公开(公告)日：2010-09-14

申请号：US11542463

申请日：2006-10-03

申请人： Ranganathan Srinivasan ,  Raghunathan Rengaswamy

发明人： Ranganathan Srinivasan ,  Raghunathan Rengaswamy

IPC分类号： G05D3/12 ,  G05D7/00 ,  G05B13/02

CPC分类号： G05D7/005

摘要： An apparatus, method, and computer program for stiction compensation in a process control system are provided. A determination is made as to whether a valve is suffering from stiction. A control signal provided to the valve is adjusted in order to at least partially compensate for the stiction suffered by the valve. Adjusting the control signal could include (i) adjusting the control signal to cause the valve to move into a steady-state position and (ii) adjusting the control signal to cause the valve to remain in the steady-state position. Adjusting the control signal to cause the valve to move into the steady-state position could include (a) adjusting the control signal to cause the valve to move from a current position into a new position and (b) adjusting the control signal to cause the valve to move from the new position into the steady-state position.

摘要翻译： 提供了一种用于过程控制系统中的静态补偿的装置，方法和计算机程序。 确定阀门是否患有静息。 调整提供给阀的控制信号，以便至少部分地补偿阀遭受的粘滞。 调整控制信号可以包括（i）调节控制信号以使阀门进入稳态位置，和（ii）调节控制信号使阀门保持在稳态位置。 调节控制信号使阀门进入稳态位置可能包括（a）调节控制信号使阀门从当前位置移动到新位置，（b）调节控制信号，使 阀从新位置移动到稳态位置。

公开(公告)号：US20130030554A1

公开(公告)日：2013-01-31

申请号：US13192233

申请日：2011-07-27

申请人： WARD MACARTHUR ,  RANGANATHAN SRINIVASAN ,  SRIRAM HALLIHOLE ,  MADHUKAR MADHAVAMURTHY GUNDAPPA ,  SANJAY KANTILAL DAVE ,  SUJIT GAIKWAD ,  SACHI DASH

发明人： WARD MACARTHUR ,  RANGANATHAN SRINIVASAN ,  SRIRAM HALLIHOLE ,  MADHUKAR MADHAVAMURTHY GUNDAPPA ,  SANJAY KANTILAL DAVE ,  SUJIT GAIKWAD ,  SACHI DASH

IPC分类号： G05B13/02

CPC分类号： G05B17/02 ,  G05B13/048

摘要： A model predictive controller (MPC) for controlling physical processes includes a non-linear control section that includes a memory that stores a non-linear (NL) model that is coupled to a linearizer that provides at least one linearized model, and a linear control section that includes a memory that stores a linear model. A controller engine is coupled to receive both the linearized model and linear model. The MPC includes a switch that in one position causes the controller engine to operate in a linear mode utilizing the linear model to implement linear process control and in another position causes the controller engine to operate in a NL mode utilizing the linearized model to implement NL process control. The switch can be an automatic switch configured for automatically switching between linear process control and NL process control.

摘要翻译： 用于控制物理过程的模型预测控制器（MPC）包括非线性控制部分，其包括存储耦合到提供至少一个线性化模型的线性化器的非线性（NL）模型的存储器，以及线性控制 该部分包括存储线性模型的内存。 控制器引擎被耦合以接收线性化模型和线性模型。 MPC包括开关，其在一个位置使得控制器引擎利用线性模型在线性模式下操作以实现线性过程控制，并且在另一位置使得控制器引擎利用线性化模型在NL模式下操作以实现NL过程 控制。 开关可以是一个自动开关，用于在线性过程控制和NL过程控制之间进行自动切换。

公开(公告)号：US07970482B2

公开(公告)日：2011-06-28

申请号：US11836289

申请日：2007-08-09

申请人： Ranganathan Srinivasan ,  J. Ward MacArthur

发明人： Ranganathan Srinivasan ,  J. Ward MacArthur

IPC分类号： G05B13/02 ,  G06G7/48 ,  G06F17/10

CPC分类号： G05B13/04

摘要： A method and system for process control using a model predictive controller. The control system can have one or more control devices operably coupled to a processing system for controlling a process of the processing system; a modeling tool to provide a non-linear model based at least in part on the process and to provide a plurality of linearized models based at least in part on the non-linear model, where the plurality of linearized models are linearized at different linearization rates; and a controller operably coupled to the modeling tool. The controller can select one of the plurality of linearized models based on a comparison of the plurality of linearized models with a reference model. The controller can send one or more control signals to at least one of the one or more control devices. The one or more control signals can be determined using the selected one of the plurality of linearized models.

摘要翻译： 一种使用模型预测控制器进行过程控制的方法和系统。 控制系统可以具有可操作地耦合到处理系统的一个或多个控制装置，用于控制处理系统的处理; 至少部分地基于该过程提供非线性模型的建模工具，并且至少部分地基于非线性模型提供多个线性化模型，其中多个线性化模型以不同的线性化速率线性化 ; 以及可操作地耦合到建模工具的控制器。 控制器可以基于多个线性化模型与参考模型的比较来选择多个线性化模型中的一个。 控制器可以向一个或多个控制装置中的至少一个发送一个或多个控制信号。 可以使用多个线性化模型中的所选择的一个来确定一个或多个控制信号。

公开(公告)号：US20090018671A1

公开(公告)日：2009-01-15

申请号：US11776785

申请日：2007-07-12

申请人： Ranganathan Srinivasan ,  J. Ward MacArthur ,  Gobinath Pandurangan ,  Murugesh Palanisamy ,  Sriram Hallihole

发明人： Ranganathan Srinivasan ,  J. Ward MacArthur ,  Gobinath Pandurangan ,  Murugesh Palanisamy ,  Sriram Hallihole

IPC分类号： G05B15/00

CPC分类号： G05B17/02

摘要： A method and system for process control. The control system can be operably coupled to a processing system. The control system can include control devices operably coupled to the processing system; a modeling module to provide a linear model based at least in part on the processing system; a computational module to provide controller algorithms associated with the control devices; a user interface module to present at a user interface controller information based at least in part on the linear model and the controller algorithms; and a separate coordination module for establishing communication between the modeling module, the computational module and the user interface module. One or more control signals can be provided to at least one of the control devices for controlling the processing system. In one embodiment, the modeling module can generate the linear model from a non-linear process.

摘要翻译： 一种过程控制的方法和系统。 控制系统可以可操作地耦合到处理系统。 控制系统可以包括可操作地耦合到处理系统的控制装置; 至少部分地基于处理系统提供线性模型的建模模块; 提供与控制装置相关联的控制器算法的计算模块; 用户界面模块，用于至少部分地基于所述线性模型和所述控制器算法在用户界面处呈现控制器信息; 以及用于建立建模模块，计算模块和用户界面模块之间的通信的单独的协调模块。 可以向至少一个控制装置提供一个或多个控制信号，以控制处理系统。 在一个实施例中，建模模块可以从非线性过程生成线性模型。

公开(公告)号：US20130013086A1

公开(公告)日：2013-01-10

申请号：US13177356

申请日：2011-07-06

申请人： WARD MACARTHUR ,  SRIRAM HALLIHOLE ,  RANGANATHAN SRINIVASAN ,  MADHUKAR MADHAVAMURTHY GUNDAPPA ,  MANDAR SUBHASH VARTAK ,  GOBINATH PANDURANGAN ,  S. CHANDRAKANTH VITTAL ,  LUCY NING LIU ,  SANJAY KANTILAL DAVE ,  AVIJIT DAS ,  SREESATHYA SATHYABHAMA SREEKANTAN ,  ROSHAN YOHANNAN ,  RAJNI JAIN

发明人： WARD MACARTHUR ,  SRIRAM HALLIHOLE ,  RANGANATHAN SRINIVASAN ,  MADHUKAR MADHAVAMURTHY GUNDAPPA ,  MANDAR SUBHASH VARTAK ,  GOBINATH PANDURANGAN ,  S. CHANDRAKANTH VITTAL ,  LUCY NING LIU ,  SANJAY KANTILAL DAVE ,  AVIJIT DAS ,  SREESATHYA SATHYABHAMA SREEKANTAN ,  ROSHAN YOHANNAN ,  RAJNI JAIN

IPC分类号： G05B13/04

CPC分类号： G05B13/04 ,  G06F17/50 ,  G06F17/5004

摘要： A method of dynamic model selection for hybrid linear/non-linear process control includes developing a plurality of process models including at least one linear process model and at least one non-linear process model from inputs including dynamic process data from a processing system that runs a physical process. At least two of the plurality of process models are selected based on a performance comparison based on at least one metric, wherein the selected process models number less than a number of the plurality of process models received. A multi-model controller is generated that includes the selected process models. The physical process is simulated using the multi-model controller by applying the selected process models to obtain closed loop performance test data for each of the selected models. The performance test data is compared. A selected process model is then selected.

摘要翻译： 用于混合线性/非线性过程控制的动态模型选择的方法包括开发包括至少一个线性过程模型和来自输入的至少一个非线性过程模型的多个过程模型，所述过程模型包括来自运行的处理系统的动态过程数据 一个物理过程。 基于至少一个度量的性能比较来选择多个过程模型中的至少两个，其中所选择的过程模型小于所接收的多个过程模型的数量。 生成包含所选过程模型的多模型控制器。 通过应用所选择的过程模型，使用多模型控制器来模拟物理过程，以获得每个所选模型的闭环性能测试数据。 比较性能测试数据。 然后选择所选的过程模型。

公开(公告)号：US08688412B2

公开(公告)日：2014-04-01

申请号：US12756042

申请日：2010-04-07

申请人： Sriram Hallihole ,  Madhukar Madhavamurthy Gundappa ,  Ranganathan Srinivasan ,  J. Ward MacArthur ,  Sanjay Venugopal ,  Venkata K. P. Reddy Vurubindi

发明人： Sriram Hallihole ,  Madhukar Madhavamurthy Gundappa ,  Ranganathan Srinivasan ,  J. Ward MacArthur ,  Sanjay Venugopal ,  Venkata K. P. Reddy Vurubindi

IPC分类号： G06F17/10 ,  G05B13/02

CPC分类号： G05B17/02

摘要： A system includes a process controller and an equation evaluation apparatus. The equation evaluation apparatus includes an equation editor, a model factory, and an equation evaluation engine. The equation editor is adapted to receive equations describing a process to be controlled by the process controller. The equation editor is also adapted to generate model information representing the equations. The model factory is adapted to receive the model information and generate an equation stack representing the equations. The equation evaluation engine is adapted to receive evaluation information from the process controller, evaluate at least one of the equations using the evaluation information and the equation stack, and send a result of the evaluation to the process controller. The model information could include information representing algebraic equations, differential equations, algebraic states, differential states, inputs, parameters, constants, and/or expressions.

摘要翻译： 系统包括过程控制器和方程式评估装置。 方程式评估装置包括方程编辑器，模型工厂和等式评估引擎。 公式编辑器适于接收描述由过程控制器控制的过程的方程式。 公式编辑器还适于生成表示方程式的模型信息。 模型工厂适于接收模型信息，并生成表示方程式的方程组。 方程评估引擎适于从过程控制器接收评估信息，使用评估信息和方程式堆栈评估至少一个方程，并将评估结果发送给过程控制器。 模型信息可以包括代表代数方程，微分方程，代数状态，差分状态，输入，参数，常数和/或表达式的信息。

公开(公告)号：US08649884B2

公开(公告)日：2014-02-11

申请号：US13192233

申请日：2011-07-27

申请人： Ward MacArthur ,  Ranganathan Srinivasan ,  Sriram Hallihole ,  Madhukar Madhavamurthy Gundappa ,  Sanjay Kantilal Dave ,  Sujit Gaikwad ,  Sachi Dash

发明人： Ward MacArthur ,  Ranganathan Srinivasan ,  Sriram Hallihole ,  Madhukar Madhavamurthy Gundappa ,  Sanjay Kantilal Dave ,  Sujit Gaikwad ,  Sachi Dash

IPC分类号： G05B13/04

CPC分类号： G05B17/02 ,  G05B13/048

摘要： A model predictive controller (MPC) for controlling physical processes includes a non-linear control section that includes a memory that stores a non-linear (NL) model that is coupled to a linearizer that provides at least one linearized model, and a linear control section that includes a memory that stores a linear model. A controller engine is coupled to receive both the linearized model and linear model. The MPC includes a switch that in one position causes the controller engine to operate in a linear mode utilizing the linear model to implement linear process control and in another position causes the controller engine to operate in a NL mode utilizing the linearized model to implement NL process control. The switch can be an automatic switch configured for automatically switching between linear process control and NL process control.

摘要翻译： 用于控制物理过程的模型预测控制器（MPC）包括非线性控制部分，其包括存储耦合到提供至少一个线性化模型的线性化器的非线性（NL）模型的存储器，以及线性控制 该部分包括存储线性模型的内存。 控制器引擎被耦合以接收线性化模型和线性模型。 MPC包括开关，其在一个位置使得控制器引擎利用线性模型在线性模式下操作以实现线性过程控制，并且在另一位置使得控制器引擎利用线性化模型在NL模式下操作以实现NL过程 控制。 开关可以是一个自动开关，用于在线性过程控制和NL过程控制之间进行自动切换。

公开(公告)号：US20110251700A1

公开(公告)日：2011-10-13

申请号：US12756042

申请日：2010-04-07

申请人： Sriram Hallihole ,  Madhukar Madhavamurthy Gundappa ,  Ranganathan Srinivasan ,  J. Ward MacArthur ,  Sanjay Venugopal ,  Venkata K.P. Reddy Vurubindi

发明人： Sriram Hallihole ,  Madhukar Madhavamurthy Gundappa ,  Ranganathan Srinivasan ,  J. Ward MacArthur ,  Sanjay Venugopal ,  Venkata K.P. Reddy Vurubindi

IPC分类号： G05B13/04

CPC分类号： G05B17/02

摘要： A system includes a process controller and an equation evaluation apparatus. The equation evaluation apparatus includes an equation editor, a model factory, and an equation evaluation engine. The equation editor is adapted to receive equations describing a process to be controlled by the process controller. The equation editor is also adapted to generate model information representing the equations. The model factory is adapted to receive the model information and generate an equation stack representing the equations. The equation evaluation engine is adapted to receive evaluation information from the process controller, evaluate at least one of the equations using the evaluation information and the equation stack, and send a result of the evaluation to the process controller. The model information could include information representing algebraic equations, differential equations, algebraic states, differential states, inputs, parameters, constants, and/or expressions.

摘要翻译： 系统包括过程控制器和方程式评估装置。 方程式评估装置包括方程编辑器，模型工厂和等式评估引擎。 公式编辑器适于接收描述由过程控制器控制的过程的方程式。 公式编辑器还适于生成表示方程式的模型信息。 模型工厂适于接收模型信息，并生成表示方程式的方程组。 方程评估引擎适于从过程控制器接收评估信息，使用评估信息和方程式堆栈评估至少一个方程，并将评估结果发送给过程控制器。 模型信息可以包括代表代数方程，微分方程，代数状态，差分状态，输入，参数，常数和/或表达式的信息。

公开(公告)号：US07881815B2

公开(公告)日：2011-02-01

申请号：US11776785

申请日：2007-07-12

申请人： Ranganathan Srinivasan ,  J. Ward MacArthur ,  Gobinath Pandurangan ,  Murugesh Palanisamy ,  Sriram Hallihole

发明人： Ranganathan Srinivasan ,  J. Ward MacArthur ,  Gobinath Pandurangan ,  Murugesh Palanisamy ,  Sriram Hallihole

IPC分类号： G05B13/02

CPC分类号： G05B17/02

摘要： A method and system for process control. The control system can be operably coupled to a processing system. The control system can include control devices operably coupled to the processing system; a modeling module to provide a linear model based at least in part on the processing system; a computational module to provide controller algorithms associated with the control devices; a user interface module to present at a user interface controller information based at least in part on the linear model and the controller algorithms; and a separate coordination module for establishing communication between the modeling module, the computational module and the user interface module. One or more control signals can be provided to at least one of the control devices for controlling the processing system. In one embodiment, the modeling module can generate the linear model from a non-linear process.

摘要翻译： 一种过程控制的方法和系统。 控制系统可以可操作地耦合到处理系统。 控制系统可以包括可操作地耦合到处理系统的控制装置; 至少部分地基于处理系统提供线性模型的建模模块; 提供与控制装置相关联的控制器算法的计算模块; 用户界面模块，用于至少部分地基于所述线性模型和所述控制器算法在用户界面处呈现控制器信息; 以及用于建立建模模块，计算模块和用户界面模块之间的通信的单独的协调模块。 可以向至少一个控制装置提供一个或多个控制信号，以控制处理系统。 在一个实施例中，建模模块可以从非线性过程生成线性模型。