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| Number | Title | Issue Date |
| 7443395 | Multi-variable operations Operation of a multi-variable process involves multidimensional representation of the value (p1-p12) of the process variables (P1-P12) according to individual coordinate axes, and an operational envelope (UB,LB) derived from a group of se... | 10/28/2008 |
| 7402635 | Process for preparing polyethylene Disclosed is process for producing polyethylene using a slurry loop reactor. The process includes using a mathematical model to predict a plurality of process control parameters based on the desired product properties and reactor characteristics and controlling the ... | 07/22/2008 |
| 7383235 | Method and hardware architecture for controlling a process or for processing data based on quantum soft computing A method of controlling a process driven by a control signal for producing a corresponding output includes producing an error signal as a function of a state of the process and of a reference signal. A control signal is generated as a function of the error signal an... | 06/03/2008 |
| 7323036 | Maximizing regulatory credits in controlling air pollution A controller directs the operation of an air pollution control (APC) system having one or more controllable operating parameters and a defined operating limit representing a regulatory limit on an allowed amount of pollutant to be emitted by the APC system. An inter... | 01/29/2008 |
| 7308339 | System and method for tuning a raw mix proportioning controller A system and method for tuning a raw mix proportioning controller used in a cement plant. A fuzzy logic supervisory controller tracks the performance of a cement plant simulator to target set points for attaining a correct mix and composition of raw materials. A gen... | 12/11/2007 |
| 7171394 | Global paint process optimization The present invention provides a method of optimizing a painting process for applying a paint layer on an article. The method comprises defining a functional relationship paint processing parameters and a paint layer property (i.e., the average paint layer thickness... | 01/30/2007 |
| 7164954 | Method for implementing indirect controller A system and method for implementing an indirect controller for a plant. A plant can be provided with both a direct controller and an indirect controller with a system model or a committee of system models. When the system model has sufficient integrity to satisfy t... | 01/16/2007 |
| 7117045 | Combined proportional plus integral (PI) and neural network (nN) controller A neural network controller in parallel with a proportional-plus-integral (PI) feedback controller in a control system. At least one input port of the neural network for receiving an input signal representing a condition of a process is included. A first set of data... | 10/03/2006 |
| 7035695 | Method and apparatus for tuning a PID controller In tuning a controller for a process in a feedback control system, a method is provided for bringing the system into asymmetric self-excited oscillations for measuring the frequency of the oscillations, average over the period value of the process output signal and ... | 04/25/2006 |
| 6895287 | Control method and control apparatus In a control method, the first controlled variable is made to coincide with a predetermined controlled variable set point. A relation variable representing the relationship between second controlled variables which are designated in advance from measured second cont... | 05/17/2005 |
| 6879971 | Automated method for building a model A method for determining an output value having a known relationship to an input value with a predicted value includes the step of first training a predictive model with at least one output for a given set of inputs that exist in a finite dataset. Data is then input... | 04/12/2005 |
| 6847850 | Process control loop analysis system The system and method disclosed herein allow a user to retrieve data from various process control loops and organize that data in dynamic manner to allow for multiple types of data analysis. A user may associate individual process control loops into groups and analy... | 01/25/2005 |
| 6757665 | Detection of pump cavitation/blockage and seal failure via current signature analysis A system and method is provided for monitoring the operating condition of a pump by evaluating fault data encoded in the instantaneous current of the motor driving the pump. The data is converted to a frequency spectrum which is analyzed to create a fault signature ... | 06/29/2004 |
| 6725208 | Bayesian neural networks for optimization and control An optimization system is provided utilizing a Bayesian neural network calculation of a derivative wherein an output is optimized with respect to an input utilizing a stochastical method that averages over many regression models. This is done such that constraints f... | 04/20/2004 |
| 6655922 | System and method for detecting and diagnosing pump cavitation The present invention provides cavitation detection systems and methods employing a classifier for detecting, diagnosing and/or classifying cavitation in a pumping system. The classifier can be integral to tie cavitation detection system and/or operativel... | 12/02/2003 |
| 6446624 | Smart circuit device of smoke exhauster for cooking The present invention proposes a smart circuit device of a smoke exhauster for cooking. The smart circuit device of the present invention comprises a sensing circuit comprising a temperature sensor and a smoke sensor, a signal processing circuit of temper... | 09/10/2002 |
| 6321216 | Method for analysis and display of transient process events using Kohonen map A method for analyzing and displaying process states of a technical plant includes enabling simultaneous, coherent assessment and display of relevant process variables of the plant by evaluating relevant process variables with regard to one another throug... | 11/20/2001 |
| 6243696 | Automated method for building a model A method for building a model of a system includes first extracting data from a historical database (310). Once the data is extracted, a dataset is then created, which dataset involves the steps of preprocessing the data. This dataset is then utilized to ... | 06/05/2001 |
| 6113256 | System and method for providing raw mix proportioning control in a cement plant with a fuzzy logic supervisory controller A system and method for providing raw mix proportioning control in a cement plant with a fuzzy logic supervisory controller. A raw mix proportioning controller determines the correct mix and composition of raw materials to be transported to a mixer. The r... | 09/05/2000 |
| 6102958 | Multiresolutional decision support system A process control system determines optimal trajectories (input controls) using multiresolutional analysis of acquired data. In contrast to conventional control systems, the present control system does not use a predetermined mathematical model or algorit... | 08/15/2000 |
| 6064997 | Discrete-time tuning of neural network controllers for nonlinear dynamical systems A family of novel multi-layer discrete-time neural net controllers is presented for the control of an multi-input multi-output (MIMO) dynamical system. No learning phase is needed. The structure of the neural net (NN) controller is derived using a filtere... | 05/16/2000 |
| 6029157 | Method for determining state parameters of a chemical reactor with artificial neural networks A sequence of measured quantities is determined for a chemical reactor and a data generator generates a curve in normal coordinates from a respective predetermined normal form that describes a type of critical state. Each normal form is imaged onto the se... | 02/22/2000 |
| 6009421 | Device and method for decreasing web breaks in a printing system based on web tension ratios A device and a method use a decision-tree induction analysis to determine a web tension ratio range for which web breaks are less likely to occur within a printing system based on web tension data collected from a plurality of previous runs of the printin... | 12/28/1999 |
| 5960375 | Transmitter with improved compensation A circuit for compensating variables in a measurement transmitter. Within the transmitter, a sensor senses a primary process variable such as differential pressure and a converter digitizes the sensed process variable. The sensor senses pressures within a... | 09/28/1999 |
| 5930136 | Control device for controlling a controlled apparatus, and a control method therefor In order to control an apparatus, such as a rolling mill, a control device may use a pre-set operation pattern to generate a pre-set command signal, which is then modified. That first modification may be part of a feedback loop in dependence on the variat... | 07/27/1999 |
| 5924086 | Method for developing a neural network tool for process identification A tool, and the method of making the tool, for process system identification that is based on the general purpose learning capabilities of neural networks. The tool and method can be used for a wide variety of system identification problems with little or... | 07/13/1999 |
| 5923558 | Automated integrated input-output control system apparatus The automated integrated input-output control system apparatus. A versatile industrial control apparatus that can be utilized as a modular unit or integrated into industrial machinery or tools to provide an apparatus and method for programmable control of... | 07/13/1999 |
| 5859773 | Residual activation neural network A plant (72) is operable to receive control inputs c(t) and provide an output y(t). The plant (72) has associated therewith state variables s(t) that are not variable. A control network (74) is provided that accurately models the plant (72). The output of... | 01/12/1999 |
| 5831850 | Method and device for control over an admissable range with contextual anticipation using fuzzy logic For controlling physical quantities in industrial plants, and particularly in the crude oil processing industries, the chemical and papermaking industries and gas, power stations and distribution networks, the value of a controlled physical quantity, subj... | 11/03/1998 |
| 5822220 | Process for controlling the efficiency of the causticizing process Continuous measurements are made of a characteristic of the individual components of green liquor fed to a slaker and white liquor exiting from the slaker. The liquor component measurements provide a precise characterization of the liquors allowing for a ... | 10/13/1998 |
| 5805453 | System identifier for paper machine A system identifier for a paper machine which allows an operator having no special skills to easily implement step responses in a profile control and which comprises a mechanism for storing theoretical positional correspondence determined by paper contrac... | 09/08/1998 |
| 5796922 | Trainable, state-sampled, network controller A trainable, state-sampled, network controller (TSSNC) or state-sampled controller (SSC) requires little information regarding a plant (as with neural networks), but can use what information is available (as in classical controllers), and provides a linea... | 08/18/1998 |
| 5778151 | Method and control device for controlling a material-processing process In the control of a material-processing process in a regulated system, a preliminary adjustment of the system takes place at the beginning of each process cycle as a function of a precalculated process parameter. A material characteristic which is relevan... | 07/07/1998 |
| 5774633 | Supporting neural network method for process operation A method and a system for causing a neural circuit model to learn typical past control results of a process and using the neural circuit model for supporting an operation of the process. The neural circuit model is caused to learn by using, as input signa... | 06/30/1998 |
| 5764513 | Check system for production process procedure Disclosed is a check system for a production process procedure in a production line for a plurality of items with its varying quantity which has a plurality of production steps, which has the steps of: unpitying information of the production process proce... | 06/09/1998 |
| 5761090 | Expert system for testing industrial processes and determining sensor status A method and system for monitoring both an industrial process and a sensor. The method and system include determining a minimum number of sensor pairs needed to test the industrial process as well as the sensor for evaluating the state of operation of bot... | 06/02/1998 |
| 5754452 | Method and apparatus for increasing update rates in measurement instruments A method of processing readings in a measurement instrument is provided to allow for faster updates when dealing with very complex characterization equations. The present method calculates the exact and precise process variable utilizing these complex equ... | 05/19/1998 |
| 5745382 | Neural network based system for equipment surveillance A method and system for performing surveillance of transient signals of an industrial device to ascertain the operating state. The method and system involves the steps of reading into a memory training data, determining neural network weighting values unt... | 04/28/1998 |
| 5742503 | Use of saturation relay feedback in PID controller tuning A method and an apparatus are provided for autotuning a parameter of a PID controller which is employed in a transfer function. The method includes steps of (a) providing a first specific value for the transfer function; (b) computing a first ultimate par... | 04/21/1998 |
| 5740324 | Method for process system identification using neural network The method of making the tool, for process system identification that is based on the general purpose learning capabilities of neural networks. The method can be used for a wide variety of system identification problems with little or no analytic effort. ... | 04/14/1998 |
