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21. 发明授权

US06298454B1 Diagnostics in a process control system 有权
标题翻译：过程控制系统中的诊断
公开(公告)号：US06298454B1
公开(公告)日：2001-10-02
申请号：US09256585
申请日：1999-02-22
申请人： Trevor D. Schleiss , Wilhelm K. Wojsznis , Terrence L. Blevins
发明人： Trevor D. Schleiss , Wilhelm K. Wojsznis , Terrence L. Blevins
IPC分类号： G06F1100
CPC分类号： G05B23/0227 , G05B23/027
摘要： A diagnostic tool automatically collects and stores data indicative of a variability parameter, a mode parameter, a status parameter and a limit parameter associated with each of the different devices, loops or function blocks within a process control system, processes the collected data to determine which devices, loops or function blocks have problems that result in reduced performance of the process control system, displays a list of detected problems to an operator and then suggests the use of other, more specific diagnostic tools to further pinpoint or correct the problems. When the diagnostic tool recommends and executes a data intensive application as the further diagnostic tool, it automatically configures a controller of the process control network to collect the data needed for such a tool.
摘要翻译：诊断工具自动收集和存储指示与过程控制系统内的不同设备，循环或功能块中的每一个相关联的变量参数，模式参数，状态参数和限制参数的数据，处理收集的数据以确定哪个设备，循环或功能块具有导致过程控制系统的性能降低的问题，向操作者显示检测到的问题的列表，然后建议使用其他更具体的诊断工具来进一步确定或纠正问题。当诊断工具推荐并执行数据密集型应用程序作为其他诊断工具时，它会自动配置过程控制网络的控制器，以收集此类工具所需的数据。

22. 发明授权

US09110452B2 Inferential process modeling, quality prediction and fault detection using multi-stage data segregation 有权
标题翻译：推理过程建模，质量预测和使用多阶段数据隔离的故障检测
公开(公告)号：US09110452B2
公开(公告)日：2015-08-18
申请号：US13611733
申请日：2012-09-12
申请人： Terrence L. Blevins , Wilhelm K. Wojsznis , Mark J. Nixon , John M. Caldwell
发明人： Terrence L. Blevins , Wilhelm K. Wojsznis , Mark J. Nixon , John M. Caldwell
IPC分类号： G06F19/00 , G05B17/02 , G05B23/02
CPC分类号： G06F17/18 , G05B17/02 , G05B23/024 , G06F17/16
摘要： A process modeling technique uses a single statistical model developed from historical data for a typical process and uses this model to perform quality prediction or fault detection for various different process states of a process. The modeling technique determines means (and possibly standard deviations) of process parameters for each of a set of product grades, throughputs, etc., compares on-line process parameter measurements to these means and uses these comparisons in a single process model to perform quality prediction or fault detection across the various states of the process. In this manner, a single process model can be used to perform quality prediction or fault detection while the process is operating in any of the defined process stages or states.
摘要翻译：过程建模技术使用从历史数据开发的单个统计模型用于典型过程，并使用该模型对过程的各种不同过程状态执行质量预测或故障检测。建模技术确定了一组产品等级，吞吐量等中的每一个的工艺参数的平均值（可能是标准偏差），将在线工艺参数测量与这些方法进行比较，并在单个过程模型中使用这些比较来执行质量在过程的各种状态下的预测或故障检测。以这种方式，当过程在任何定义的过程阶段或状态下操作时，可以使用单个过程模型来执行质量预测或故障检测。

23. 发明授权

US07496041B2 High speed auto-tuning loop 有权
标题翻译：高速自动调谐回路
公开(公告)号：US07496041B2
公开(公告)日：2009-02-24
申请号：US10376891
申请日：2003-02-28
申请人： Terrence L. Blevins , Wilhelm K. Wojsznis
发明人： Terrence L. Blevins , Wilhelm K. Wojsznis
IPC分类号： H04L12/26 , G05B13/02
CPC分类号： G05B19/0423 , G05B2219/21017 , G05B2219/25428 , G05B2219/31135 , G05B2219/42152
摘要： An auto-tuner is adapted to be used in a distributed process control network having a communications network that communicatively couples a process controller, which executes a process control routine, and one or more process devices used in a process control loop. The auto-tuner includes a first tuning element configured to cause a control entity to force the process loop to undergo an auto-tuning procedure and a tuning data stack operating within one of the process devices to receive and store a tuning signal associated with the control entity along with a time stamp indicating the time the tuning signal was acted on by the device. A measurement data stack is disposed in the same or a different process device and operates to receive and store a response or measurement signal generated by the process device along with a time stamp indicating when the response signal was generated or detected. A second tuning element which may be, for example, in a controller or a workstation, periodically receives data from the tuning data stack and the measurement data stack and determines a tuning parameter to be used in tuning the process loop.
摘要翻译：自动调谐器适用于分布式过程控制网络，该分布式过程控制网络具有通信耦合执行过程控制程序的过程控制器和过程控制循环中使用的一个或多个过程设备的通信网络。所述自动调谐器包括第一调谐元件，其被配置为使得控制实体强制所述过程回路经历自动调谐过程，以及在所述过程设备之一内操作的调谐数据堆，以接收和存储与所述控制相关联的调谐信号实体以及指示调谐信号被设备作用的时间的时间戳。测量数据堆叠设置在相同或不同的处理设备中，并且操作以接收和存储由处理设备生成的响应或测量信号以及指示何时生成或检测到响应信号的时间戳。可以例如在控制器或工作站中的第二调谐元件周期性地从调谐数据堆栈和测量数据堆栈接收数据，并且确定要在调谐过程回路中使用的调谐参数。

24. 发明授权

US07113834B2 State based adaptive feedback feedforward PID controller 有权
标题翻译：基于状态的自适应反馈前馈PID控制器
公开(公告)号：US07113834B2
公开(公告)日：2006-09-26
申请号：US10419582
申请日：2003-04-21
申请人： Wilhelm K. Wojsznis , Terrence L. Blevins
发明人： Wilhelm K. Wojsznis , Terrence L. Blevins
IPC分类号： G05B13/02
CPC分类号： G05B11/42 , G05B13/042 , G05B17/02
摘要： A state based adaptive PID controller includes a model set component including a plurality of process models, each process model including a plurality of parameters. An error generator generates a model error signal representative of a difference between a model output signal and a process output signal. A model evaluation component computes a model squared error based on the model error signal. A parameter interpolator calculates an adaptive parameter value based on the model squared error. A controller update component updates adaptive controller parameter values based on adaptive parameter values.
摘要翻译：基于状态的自适应PID控制器包括包括多个过程模型的模型集合分量，每个过程模型包括多个参数。误差发生器产生代表模型输出信号和过程输出信号之间差异的模型误差信号。模型评估组件基于模型误差信号计算模型平方误差。参数插值器根据模型平方误差计算自适应参数值。控制器更新组件根据自适应参数值更新自适应控制器参数值。

25. 发明授权

US06760716B1 Adaptive predictive model in a process control system 有权
标题翻译：过程控制系统中的自适应预测模型
公开(公告)号：US06760716B1
公开(公告)日：2004-07-06
申请号：US09590630
申请日：2000-06-08
申请人： Sai Ganesamoorthi , Terrence L. Blevins , Vasiliki Tzovla , Wilhelm K. Wojsznis , Ashish Mehta
发明人： Sai Ganesamoorthi , Terrence L. Blevins , Vasiliki Tzovla , Wilhelm K. Wojsznis , Ashish Mehta
IPC分类号： G06F1518
CPC分类号： G05B13/027 , G05B13/048
摘要： An adaptive predictive model includes a standard predictive model, such as a neural network or a natural model, constructed to produce an output that predicts a process parameter and a combiner network that combines the output of the predictive model with one or more measured values of the process parameter to produce an adjusted predicted process parameter during operation of a process. The adaptive predictive model reduces or corrects for non-linear as well as linear errors in the prediction of a process variable without having to reform the predictive model itself, while requiring only minor increases in processing power and time.
摘要翻译：自适应预测模型包括标准预测模型，例如神经网络或自然模型，其被构造为产生预测过程参数的输出和将预测模型的输出与一个或多个测量值相结合的组合器网络过程参数以在过程的操作期间产生经调整的预测过程参数。自适应预测模型减少或校正过程变量的预测中的非线性和线性误差，而不必改变预测模型本身，同时仅需要稍微增加处理能力和时间。

26. 发明授权

US06721609B1 Integrated optimal model predictive control in a process control system 有权
标题翻译：过程控制系统中的综合最佳模型预测控制
公开(公告)号：US06721609B1
公开(公告)日：2004-04-13
申请号：US09593327
申请日：2000-06-14
申请人： Wilhelm K. Wojsznis , Terrence L. Blevins , Richard C. Seeman , Mark J. Nixon
发明人： Wilhelm K. Wojsznis , Terrence L. Blevins , Richard C. Seeman , Mark J. Nixon
IPC分类号： G05B1302
CPC分类号： G05B13/0275 , G05B13/048
摘要： A model predictive controller having a set of inputs adapted to receive process output signals and further having a set of outputs adapted to supply process input signals to process control devices is configured to perform integrated optimal model predictive control. The controller provides integrated optimal control using a feedback path that couples a selected output to an input having a setpoint that is equal to the constraint limit of the selected output. The controller maintains the selected output at its constraint limit until one of the outputs, other than the selected output, is going to reach or exceed the associated constraint limit for that output. When the output is going to reach or exceed the associated constraint limit for that output, the controller relaxes the setpoint until the output is no longer going to reach or exceed the associated constraint limit for that output.
摘要翻译：具有适于接收处理输出信号并且还具有适于向处理控制装置提供过程输入信号的一组输出的一组输入的模型预测控制器被配置为执行集成的最佳模型预测控制。控制器使用将所选择的输出耦合到具有等于所选输出的约束极限的设定点的输入的反馈路径来提供集成的最佳控制。控制器将所选择的输出保持在其约束极限，直到除了所选输出之外的输出之一将达到或超过该输出的相关约束极限。当输出达到或超过该输出的相关约束限制时，控制器放松设定值，直到输出不再达到或超过该输出的相关约束极限。

27. 发明授权

US5453925A System and method for automatically tuning a process controller 失效
标题翻译：自动调整过程控制器的系统和方法
公开(公告)号：US5453925A
公开(公告)日：1995-09-26
申请号：US70090
申请日：1993-05-28
申请人： Wilhelm K. Wojsznis , Terrence L. Blevins
发明人： Wilhelm K. Wojsznis , Terrence L. Blevins
IPC分类号： G05B13/02 , G05B13/00 , G05B11/42
CPC分类号： G05B13/025
摘要： A system and method for automatically tuning a process controller used to control an industrial process, or the like. The controller is removed from closed-loop control of a process under control, and a signal is applied to the process under control to cause the process to undergo controlled self-oscillation. A first portion of the self-oscillation procedure is used to determine a Time Delay characteristic of the process under control, and a subsequent portion of the self-oscillation procedure as used to calculate an Ultimate Gain characteristic and an Ultimate Period characteristic of the process under control. These three characteristics are then used to calculate control parameters which are used to tune the controller. After tuning, the controller is placed back into a closed-loop with the process under control.
摘要翻译：用于自动调整用于控制工业过程的过程控制器的系统和方法等。控制器从控制过程的闭环控制中移除，并且将信号施加到被控制的过程，以使过程经受受控的自振荡。自振荡过程的第一部分用于确定控制过程的时间延迟特性，以及自振荡过程的后续部分，用于计算最终增益特性和极限增益特性。控制。然后使用这三个特征来计算用于调节控制器的控制参数。调整完毕后，控制器将被放回到一个闭环状态，该过程受到控制。

28. 发明授权

US08706267B2 Process model identification in a process control system 有权
标题翻译：过程控制系统中的过程模型识别
公开(公告)号：US08706267B2
公开(公告)日：2014-04-22
申请号：US12260073
申请日：2008-10-28
申请人： John M. Caldwell , Terrence L. Blevins , Peter Wojsznis , Wilhelm K. Wojsznis
发明人： John M. Caldwell , Terrence L. Blevins , Peter Wojsznis , Wilhelm K. Wojsznis
IPC分类号： G05B13/02
CPC分类号： G05B13/04 , G05B13/048 , G05B23/0254 , G05B23/0272
摘要： A method of controlling a process control system having a plurality of control loops includes collecting operating condition data in connection with the operation of each control loop of the plurality of control loops, identifying a respective process model for each control loop of the plurality of control loops from the respective operating condition data collected for each control loop of the plurality of control loops and developing a process model history by storing data indicative of the multiple identified process models for each control loop of the plurality of control loops.
摘要翻译：控制具有多个控制回路的过程控制系统的方法包括：结合多个控制回路的每个控制回路的操作来收集操作条件数据，识别多个控制回路中每个控制回路的相应过程模型从针对多个控制回路的每个控制循环收集的相应操作条件数据，并通过存储指示多个控制回路中的每个控制回路的多个确定的过程模型的数据来开发过程模型历史。

29. 发明授权

US07551969B2 State based adaptive feedback feedforward PID controller 有权
标题翻译：基于状态的自适应反馈前馈PID控制器
公开(公告)号：US07551969B2
公开(公告)日：2009-06-23
申请号：US11534943
申请日：2006-09-25
申请人： Wilhelm K. Wojsznis , Terrence L. Blevins
发明人： Wilhelm K. Wojsznis , Terrence L. Blevins
IPC分类号： G05B13/02 , G06F7/60 , G06F17/10
CPC分类号： G05B11/42 , G05B13/042 , G05B17/02
摘要： A state based adaptive feedback/feedforward PID controller includes a model set component, communicatively coupled to a process input, having a state variable defining a number of process regions, and a number of models grouped into the process regions. Each of the grouped models includes a plurality of parameters having a value selected from a set of predetermined initial values assigned to the respective parameter. The adaptive controller further includes an error generator communicatively coupled to the model set component and a process output. The error generator configured to generate a model error signal representative of the difference between a model output signal and a process output signal. The error generator, communicatively coupled to a model evaluation component, is configured to compute a model squared error corresponding to a model and correlating the model squared error to parameter values represented in the model. The adaptive controller further includes a parameter interpolator communicatively coupled to the model evaluation component for calculating a respective adaptive parameter value for parameters represented in the model and a controller update component, communicatively coupled to the parameter interpolator, for updating the controller in response to adaptive parameter values upon conclusion of an adaptation cycle.
摘要翻译：基于状态的自适应反馈/前馈PID控制器包括通信地耦合到过程输入的模型集合分量，具有定义多个处理区域的状态变量以及分组到过程区域中的多个模型。每个分组的模型包括具有从分配给相应参数的一组预定初始值中选择的值的多个参数。自适应控制器还包括通信地耦合到模型组分量和过程输出的误差发生器。该误差发生器被配置为产生表示模型输出信号和过程输出信号之间的差异的模型误差信号。通信地耦合到模型评估组件的误差发生器被配置为计算对应于模型的模型平方误差并将模型平方误差与模型中表示的参数值相关联。自适应控制器还包括通信地耦合到模型评估组件的参数内插器，用于计算模型中表示的参数的相应自适应参数值，以及通信地耦合到参数内插器的控制器更新组件，用于响应于自适应参数更新控制器适应周期结束时的价值观。

30. 发明申请

US20090062932A1 Process Model Identification in a Process Control System 有权
标题翻译：过程控制系统中的过程模型识别
公开(公告)号：US20090062932A1
公开(公告)日：2009-03-05
申请号：US12260073
申请日：2008-10-28
申请人： John Caldwell , Terrence L. Blevins , Peter Wojsznis , Wilhelm K. Wojsznis
发明人： John Caldwell , Terrence L. Blevins , Peter Wojsznis , Wilhelm K. Wojsznis
IPC分类号： G05B17/00 , G06F15/16 , G06F17/30 , G06F15/00 , G06F7/06
CPC分类号： G05B13/04 , G05B13/048 , G05B23/0254 , G05B23/0272
摘要： Disclosed is a method of controlling and managing a process control system having a plurality of control loops. The method includes implementing a plurality of control routines to control operation of the plurality of control loops, respectively. The plurality of control routines may include at least one non-adaptive control routine. Operating condition data is then collected in connection with the operation of each control loop of the plurality of control loops, and a respective process model is identified for each control loop of the plurality of control loops from the respective operating condition data collected for each control loop of the plurality of control loops. In some embodiments, the identification of the respective process models may be automatic as a result of a detected process change or be on-demand as a result of an injected parameter change.
摘要翻译：公开了一种控制和管理具有多个控制回路的过程控制系统的方法。该方法包括实现多个控制例程以分别控制多个控制回路的操作。多个控制程序可以包括至少一个非自适应控制程序。然后结合多个控制回路的每个控制回路的操作来收集操作条件数据，并且从针对每个控制回路收集的各个操作条件数据中识别出多个控制回路中的每个控制回路的相应过程模型的多个控制回路。在一些实施例中，作为检测到的过程改变的结果，可以自动地识别各个过程模型，或者作为注入的参数改变的结果而是按需。

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