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1. 发明授权

US09983559B2 Updating and utilizing dynamic process simulation in an operating process environment 有权
公开(公告)号：US09983559B2
公开(公告)日：2018-05-29
申请号：US11537975
申请日：2006-10-02
申请人： Terrence L. Blevins , Wilhelm K. Wojsznis , Mark J. Nixon
发明人： Terrence L. Blevins , Wilhelm K. Wojsznis , Mark J. Nixon
IPC分类号： G06G7/48 , G05B19/042 , G05B17/02 , G06F17/50
CPC分类号： G05B19/0428 , G05B17/02 , G05B2219/23404 , G05B2219/23445 , G06F17/5009
摘要： A simulation system that includes interconnected simulation blocks which use process models to perform simulation activities for a process plant is integrated into a process control environment for the process plant in a manner that makes the simulation system easy to use and easily updated for on-line process simulation. The disclosed simulation system enables future predicted values as well as the current predicted values of process parameters produced by the simulation system to be made available for performance evaluation as well as to guide plant operations. Additionally, the simulation system is connected to the operating process plant to receive various on-line process plant measurements, and uses these measurements to automatically update the process models used in the simulation system, to thereby keep the simulation system coordinated with the actual operating conditions of the process plant.

2. 发明授权

US09182752B2 Method and system for multi-zone modeling to determine material properties in storage tanks 有权
标题翻译：用于多区域建模的方法和系统，用于确定储罐中的材料性质
公开(公告)号：US09182752B2
公开(公告)日：2015-11-10
申请号：US13103432
申请日：2011-05-09
申请人： Terrence L. Blevins , Wilhelm K. Wojsznis , Christopher J. Worek
发明人： Terrence L. Blevins , Wilhelm K. Wojsznis , Christopher J. Worek
IPC分类号： G05B17/02 , G05B13/04
CPC分类号： G05B17/02 , G05B13/048
摘要： In a batch process control system employing storage tanks without mixers, properties of the storage tank pump out feedstock may be modeled to more accurately control the quality of a process. This model may not require the measurement of input or pump out flow or assume perfect blending. Rather, the developed model may assume that feedstock input into a storage tank may remain layered with some mixing due to continuous convection, turbulence during loading, or other factors. The model may include a projection of the properties describing a storage tank layer of input material into the model. For each new load of storage tank input feedstock, model zones may be shifted and the zone from which the feedstock is drawn may be updated with the properties from the new load.
摘要翻译：在采用没有混合器的储罐的批量过程控制系统中，可以建模储罐泵出原料的特性以更准确地控制过程的质量。该型号可能不需要测量输入或泵出流量或假设完美混合。相反，开发的模型可以认为，由于连续对流，加载期间的湍流或其他因素，输入到储罐中的原料可能会保持分层。该模型可以包括将描述输入材料的储罐层的性质的投影放入模型中。对于储存罐输入原料的每个新载荷，模型区域可能会移动，并且可以从新载荷的属性更新绘制原料的区域。

3. 发明授权

US08280533B2 Continuously scheduled model parameter based adaptive controller 有权
标题翻译：连续调度模型参数自适应控制器
公开(公告)号：US08280533B2
公开(公告)日：2012-10-02
申请号：US12489106
申请日：2009-06-22
申请人： Peter Wojsznis , Terrence Lynn Blevins , Wilhelm K. Wojsznis
发明人： Peter Wojsznis , Terrence Lynn Blevins , Wilhelm K. Wojsznis
IPC分类号： G05B13/02 , G06F7/60 , G06F17/10
CPC分类号： G05B13/042 , G05B11/42 , G05B17/02
摘要： An adaptive process controller performs continuously scheduled process model parameter interpolation to determine a particular set of process model parameters which are used to develop controller tuning parameters for controller tuning. More particularly, a state-based, adaptive PID controller described herein uses a new technique to determine an appropriate process model to be used to perform adaptive tuning over the various operating regions of the plant, and in particular, uses a process model parameter determination technique that enables continuously scheduled process model parameter update over the various plant operating regions or points. The use of this continuously scheduled process model parameter update method provides for smoother transitions between tuning parameters used in the PID controller during adaptive tuning procedures which are implemented based on changes in the operating region or the operating point of the process, thereby providing for better overall control.
摘要翻译：自适应过程控制器执行连续调度的过程模型参数插值，以确定用于开发用于控制器调谐的控制器调整参数的特定过程模型参数集合。更具体地，本文描述的基于状态的自适应PID控制器使用新技术来确定要用于在工厂的各种操作区域执行自适应调整的适当过程模型，并且特别地，使用过程模型参数确定技术这可以在各种工厂操作区域或点上实现连续计划的过程模型参数更新。使用这种连续计划的过程模型参数更新方法提供了在基于操作区域或过程的操作点的变化实现的自适应调整过程期间在PID控制器中使用的调谐参数之间更平滑的转换，从而提供更好的整体控制。

4. 发明授权

US08055358B2 Multi-objective predictive process optimization with concurrent process simulation 有权
标题翻译：多目标预测过程优化与并发过程仿真
公开(公告)号：US08055358B2
公开(公告)日：2011-11-08
申请号：US11567107
申请日：2006-12-05
申请人： Terrence L. Blevins , Wilhelm K. Wojsznis , Mark J. Nixon , Peter Wojsznis
发明人： Terrence L. Blevins , Wilhelm K. Wojsznis , Mark J. Nixon , Peter Wojsznis
IPC分类号： G05B13/02
CPC分类号： G05B17/02 , G05B13/022 , G05B13/048
摘要： A system and method for controlling a process includes simulating the process and producing a simulated output of the process, developing a set of target values based on measured inputs from the process and based on the simulated output from the process simulator, and producing multiple control outputs configured to control the process based on the set of target values during each operational cycle of the process control system. The simulated outputs include one or more predicted future values up to the steady state of the process.
摘要翻译：用于控制过程的系统和方法包括模拟过程并产生过程的模拟输出，基于来自过程的测量输入并基于来自过程模拟器的模拟输出开发一组目标值，并产生多个控制输出被配置为在过程控制系统的每个操作循环期间基于目标值集合来控制过程。模拟输出包括直到该过程稳定状态的一个或多个预测的未来值。

5. 发明授权

US07272454B2 Multiple-input/multiple-output control blocks with non-linear predictive capabilities 有权
标题翻译：具有非线性预测能力的多输入/多输出控制块
公开(公告)号：US07272454B2
公开(公告)日：2007-09-18
申请号：US10454937
申请日：2003-06-05
申请人： Wilhelm K. Wojsznis , Terrence L. Blevins , Ashish Mehta
发明人： Wilhelm K. Wojsznis , Terrence L. Blevins , Ashish Mehta
IPC分类号： G05B13/02
CPC分类号： G05B13/027 , G05B13/048
摘要： A process controller that may be used to control a process having a set of process outputs effected by a set of process control input signals includes a multiple-input/multiple output controller that uses the process outputs to develop the set of process control input signals and a process model, which may be a non-linear process model, that receives the set of process control input signals to produce a prediction signal for one or more of the process outputs. The multiple-input/multiple-output control element includes another process model, which may be a standard linear process model, to develop a prediction vector for each of the process outputs and includes a correction unit that modifies the prediction vector for the one or more of the process outputs using the prediction signal for the one or more of the process outputs to thereby compensate for the non-linearities of the process.
摘要翻译：可以用于控制具有由一组过程控制输入信号影响的一组过程输出的过程的过程控制器包括多输入/多输出控制器，其使用过程输出来开发一组过程控制输入信号，以及可以是非线性过程模型的过程模型，其接收一组过程控制输入信号以产生一个或多个过程输出的预测信号。多输入/多输出控制元件包括可以是标准线性过程模型的另一过程模型，用于为每个过程输出开发预测向量，并且包括校正单元，其修改一个或多个的过程输出使用用于一个或多个过程输出的预测信号，从而补偿过程的非线性。

6. 发明授权

US07257523B1 Integrated distributed process control system functionality on a single computer 有权
标题翻译：在单台计算机上集成分布式过程控制系统功能
公开(公告)号：US07257523B1
公开(公告)日：2007-08-14
申请号：US09510053
申请日：2000-02-22
申请人： Mark Nixon , Terrence L. Blevins , Wilhelm K. Wojsznis
发明人： Mark Nixon , Terrence L. Blevins , Wilhelm K. Wojsznis
IPC分类号： G06F17/50
CPC分类号： G05B17/02
摘要： An apparatus is adapted to be used to create software and programming instructions for a distributed process control system having a user workstation remotely located from a distributed controller that controls one or more field devices using control modules. The apparatus includes a computer having a memory and a processing unit as well as a configuration application and a controller application stored on the computer memory to be executed on the processor. The configuration application is further capable of being executed on the user workstation of the distributed process control system to create the control modules for execution by the distributed controller while the controller application is adapted to be executed on the distributed controller to implement one of the control modules during operation of the distributed process control system. In this system, the configuration application, when run on the computer, creates a first control module capable of being used by the distributed controller within the distributed process control system and the controller application causes execution of the first control module within the computer to thereby simulate operation of the distributed process control system. The use of this system enables the simulation and testing of distributed process control system software and control modules without the use of the hardware, e.g., the distributed process controller and field devices, which will ultimately run that software.
摘要翻译：一种装置适于用于为分布式过程控制系统创建软件和编程指令，所述分布式过程控制系统具有远离位于使用控制模块控制一个或多个现场设备的分布式控制器的用户工作站。该装置包括具有存储器和处理单元以及存储在计算机存储器上以在处理器上执行的配置应用程序和控制器应用的计算机。配置应用还能够在分布式过程控制系统的用户工作站上执行以创建用于由分布式控制器执行的控制模块，同时控制器应用适于在分布式控制器上执行以实现控制模块之一在分布式过程控制系统的运行期间。在该系统中，配置应用程序在计算机上运行时，创建能够由分布式过程控制系统内的分布式控制器使用的第一控制模块，并且控制器应用程序导致在计算机内执行第一控制模块，从而模拟分布式过程控制系统的运行。使用该系统能够在不使用硬件的情况下对分布式过程控制系统软件和控制模块进行仿真和测试，例如最终将运行该软件的分布式过程控制器和现场设备。

7. 发明授权

US06970750B2 Model-free adaptation of a process controller 失效
标题翻译：过程控制器的无模型自适应
公开(公告)号：US06970750B2
公开(公告)日：2005-11-29
申请号：US10126768
申请日：2002-04-19
申请人： Wilhelm K. Wojsznis , Terrence L. Blevins , Dirk Thiele , John A. Gudaz
发明人： Wilhelm K. Wojsznis , Terrence L. Blevins , Dirk Thiele , John A. Gudaz
IPC分类号： G05B13/02
CPC分类号： G05B13/024
摘要： An adaptive process controller drives a process variable to be substantially equivalent to a set point and adapts the controller gain, the controller reset, and/or the controller rate, based on model free adaptation. The adaptive controller combines a controller gain computed from an oscillation index with a controller gain computed from a steady state estimate and that adapts the controller reset/rate by forcing the ratio of two of the controller proportional, integral or derivative terms to be equal to a predetermined value.
摘要翻译：自适应过程控制器将过程变量驱动为基本上等同于设定点，并且基于模型自适应来调整控制器增益，控制器复位和/或控制器速率。自适应控制器将从振荡指数计算的控制器增益与从稳态估计计算的控制器增益相结合，并通过强制控制器比例，积分或导数项中的两个的比例等于一个来适应控制器复位/速率预定值。

8. 发明授权

US06557118B2 Diagnostics in a process control system 有权
公开(公告)号：US06557118B2
公开(公告)日：2003-04-29
申请号：US09801850
申请日：2001-03-08
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.

9. 发明授权

US5748467A Method of adapting and applying control parameters in non-linear process controllers 失效
标题翻译：在非线性过程控制器中调整和应用控制参数的方法
公开(公告)号：US5748467A
公开(公告)日：1998-05-05
申请号：US391717
申请日：1995-02-21
申请人： S. Joe Qin , Michael G. Ott , Wilhelm K. Wojsznis
发明人： S. Joe Qin , Michael G. Ott , Wilhelm K. Wojsznis
IPC分类号： G05B13/02
CPC分类号： G05B13/0275 , Y10S706/90
摘要： A non-linear process controller drives a process variable to be substantially equivalent to a set point based on the expected load disturbances within the process and on a measurement of the actual magnitude of set point changes. The controller uses control parameters developed in an optimal manner to control the process in response to expected load disturbances when no set point change has occurred. Whenever a set point change is detected, the controller derives a set of set point change control parameters and uses these set point change control parameters in responding to the set point change. Each of the set point change control parameters may be developed as a function of the magnitude of the actual change in the set point and according to a set of process characteristics which may include the time delay and the dominant time constant of the process.
摘要翻译：非线性过程控制器基于过程中的预期负载干扰和设定点变化的实际幅度的测量，将过程变量驱动为基本上等于设定点。当没有发生设定点变化时，控制器使用以最佳方式开发的控制参数来响应于预期的负载扰动来控制过程。无论何时检测到设定点变化，控制器将导出一组设定值变更控制参数，并使用这些设定点变更控制参数来响应设定点变化。设定点变化控制参数中的每一个可以根据设定点的实际变化的大小以及可以包括过程的时间延迟和主要时间常数的一组过程特性来开发。

10. 发明申请

US20120083917A1 PREDICTED FAULT ANALYSIS 有权
标题翻译：预测故障分析
公开(公告)号：US20120083917A1
公开(公告)日：2012-04-05
申请号：US13279881
申请日：2011-10-24
申请人： Ling Zhou , Paul K. Daly , Robert B. Havekost , Terrence L. Blevins , Wilhelm K. Wojsznis , Mark J. Nixon , Christopher J. Worek , Paul R. Muston
发明人： Ling Zhou , Paul K. Daly , Robert B. Havekost , Terrence L. Blevins , Wilhelm K. Wojsznis , Mark J. Nixon , Christopher J. Worek , Paul R. Muston
IPC分类号： G06G7/66
CPC分类号： G05B13/048 , G05B19/41875 , G05B23/0283 , G05B2219/32187 , G05B2219/32194 , Y02P90/22
摘要： Example methods, apparatuses and systems to correlate candidate factors to a predicted fault in a process control system are disclosed. Techniques may include obtaining a value associated with a particular factor corresponding to a process, and predicting a fault based on the value. A set of candidate factors corresponding to the predicted fault may be determined, and a correlation between the predicted fault and at least one factor from the set may be displayed. Different sections of the display may respectively correspond to the predicted fault and to the at least one factor, and the correlation may be indicated by time aligning the different sections. Modifications to one displayed section may result in automatic modification of other sections to maintain the correlation. A user may select one or more candidate factors to be displayed, and may indicate a particular point of a particular section to obtain additional details.
摘要翻译：公开了将候选因子与过程控制系统中的预测故障相关联的示例性方法，设备和系统。技术可以包括获得与对应于过程的特定因素相关联的值，以及基于该值来预测故障。可以确定对应于预测故障的一组候选因子，并且可以显示预测故障与来自该组的至少一个因子之间的相关性。显示器的不同部分可以分别对应于预测的故障和至少一个因素，并且可以通过对不同部分的时间对准来指示相关性。对一个显示部分的修改可能导致其他部分的自动修改以维持相关性。用户可以选择要显示的一个或多个候选因子，并且可以指示特定部分的特定点以获得附加细节。

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