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| Number | Title | Issue Date |
| 7349889 | System and method for remotely diagnosing faults A method and system for diagnosing a fault that includes a decision tree having a plurality of decision points wherein at least some of the plurality of decision points terminate in a resolution point representing a diagnosis for the fault. Also included is a plural... | 03/25/2008 |
| 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 |
| 6947797 | Method and system for diagnosing machine malfunctions A system (830) and method (800) for diagnosing a malfunctioning machine. A fault event is selected (806) together with sequential operating parameter data (808) from a selectively focused time interval about the fault event for evaluation... | 09/20/2005 |
| 6910156 | Method and system for diagnosing a technical installation A diagnostic method and system for a technical installation establish the cause of a fault event. A reliable, flexible and simple possible way of diagnosing an installation is provided by placing state variables that characterize an operating state of the technical ... | 06/21/2005 |
| 6795799 | Remote diagnosis server A network-based diagnosis server for monitoring and diagnosing a system, the server being remote from the system it is observing, comprises a sensor for generating signals indicative of a characteristic of a component of the system, a network-interfaced sensor agent... | 09/21/2004 |
| 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 |
| 6546350 | Configuration and parameterization system for diagnostic devices and associated method The invention is directed to a system and a method for the configuration and/or parameterization of diagnostic devices for test objects. The system includes a first data object having a collection of technological test object parameters of the test object... | 04/08/2003 |
| 6442438 | Method for controlling a decisional process when pursuing an aim in a specific field of application, such as economical, technical, organizational or similar and system for implementing the method A method for controlling a decisional process when pursuing an overall aim in a specific field of application, such as economic, technical, organisational or similar, which is automated by the placing in relation, according to rules and strategies predete... | 08/27/2002 |
| 5917731 | Process for detecting complete sequences and failed sequences in a situation recognition sequence The invention relates to a process of detecting check sequences in a situation recognition system, composed of a list of events and time constraints. For each check sequence, a sequence of events and intervals between possible dates of occurrence of each ... | 06/29/1999 |
| 5886903 | Method and knowledge-based system for diagnosis in biological treatment of waste water A method and knowledge-based system for generating a holistic health index for diagnosis and decision support in operational management of biological treatment of waste water with a microbial population; measured parameters of an operating biological trea... | 03/23/1999 |
| 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 |
| 5724254 | Apparatus and method for analyzing power plant water chemistry A power plant water chemistry analysis apparatus and method relies upon water chemistry sensors to obtain power plant water chemistry data characterizing the chemical activity of a power plant water system. An analytical model processor is used to generat... | 03/03/1998 |
| 5701394 | Information processing apparatus having a neural network and an expert system Disclosed is an information processing system having a neural processing unit, an expert system for executing an inference using a rule, and an information selection unit. The neural processing unit and the expert system being arranged in parallel to each... | 12/23/1997 |
| 5587930 | Fault diagnosis device A fault diagnosis device searches for causes of fault of a device under test via a fault tree having a tree structure corresponding to the hardware organization of the device under test, where the nodes of the fault tree correspond to the units of the dev... | 12/24/1996 |
| 5586066 | Surveillance of industrial processes with correlated parameters A system and method for surveillance of an industrial process. The system and method includes a plurality of sensors monitoring industrial process parameters, devices to convert the sensed data to computer compatible information and a computer which execu... | 12/17/1996 |
| 5579993 | HVAC distribution system identification A controller implemented in a heating, ventilation and air-conditioning (HVAC) distribution system provides improved control by implementing a general regression neural network to generate a control signal based on identified characteristics of components... | 12/03/1996 |
| 5557549 | Knowledge based diagnostic advisory system and method for an air separation plant This invention is a method and system for troubleshooting a breakdown or malfunction in an industrial plant facility identified by alarm or shutdown signals based upon forming a knowledge base of knowledge elements for providing advice and guidance to the... | 09/17/1996 |
| 5521840 | Diagnostic system responsive to learned audio signatures Loose parts are sensed moving in a conduit carrying a flowing material, such as the cooling circuit of a pressurized water nuclear reactor. An acoustic pickup produces an electrical signal with vibration of the conduit due to impact of the loose part, and... | 05/28/1996 |
| 5488697 | Problem state monitoring system The invention relates to a problem-state monitoring system which includes an automated reasoning technique for providing moment-by-moment advice concerning the operation of a process. The reasoning technique involves the representation of states a problem... | 01/30/1996 |
| 5465321 | Hidden markov models for fault detection in dynamic systems The invention is a system failure monitoring method and apparatus which learns the symptom-fault mapping directly from training data. The invention first estimates the state of the system at discrete intervals in time. A feature vector x of dimension k is... | 11/07/1995 |
| 5459675 | System for monitoring an industrial process and determining sensor status A method and system for monitoring an industrial process and a sensor. The method and system include generating a first and second signal characteristic of an industrial process variable. One of the signals can be an artificial signal generated by an auto... | 10/17/1995 |
| 5448476 | Distributed water flow predicting device The distributed water flow predicting device comprises seasonal prediction model learning means for learning weight coefficients by back propagation over a prediction model a neural network model for predicting daily distributed water flows and specific c... | 09/05/1995 |
| 5410492 | Processing data base information having nonwhite noise A method and system for processing a set of data from an industrial process and/or a sensor. The method and system can include processing data from either real or calculated data related to an industrial process variable. One of the data sets can be an ar... | 04/25/1995 |
| 5402521 | Method for recognition of abnormal conditions using neural networks According to the present invention, a method for recognition of normal and abnormal conditions can be performed with at least one neural network. First, trend data of an object system, before a recognition-step, are entered as input data to an input layer... | 03/28/1995 |
| 5369756 | Fault tree displaying method and process diagnosis support system In a system which performs an inference based on fault tree knowledge, a guidance and a formula of definition can be displayed in a window on a CRT display screen by selecting the individual items from a fault tree on the display screen by using, for exam... | 11/29/1994 |
| 5305426 | Plant operation support system for diagnosing malfunction of plant In response to an alarm, an inference engine in a plant operation support system calculates reliabilities of the appearance of phenomenons based on process data from the plant and a knowledge data base. The knowledge data base refers to diagnosis informat... | 04/19/1994 |
| 5223207 | Expert system for online surveillance of nuclear reactor coolant pumps An expert system for online surveillance of nuclear reactor coolant pumps. This system provides a means for early detection of pump or sensor degradation. Degradation is determined through the use of a statistical analysis technique, sequential probabilit... | 06/29/1993 |
| 5133046 | Computer-based diagnostic expert system organized according to Bayesian theory An expert system is organized according to Bayes' theorem. The system includes a diagnostic module that generates a diagnosis in the form of probability distributions. The diagnostic module also is responsive to evidence in the form of discretized time tr... | 07/21/1992 |
| 5079690 | Self-optimizing method and machine A method of automatically generating new knowledge bases comprising: automatically planning satistically designed experiment on selected control variables; executing the designed experiment; analyzing the experimental results to acquire knowledge bases; and coding ... | 01/07/1992 |
| 5073499 | Chemical diagnostic system A chemical monitor system is disclosed that controls a multiplexable valve array 90 to route a fluid sample from any of plural fluid sample sources 20-38 to any of plural monitors 142-160 which will produce the most valuable chemistry measurement for diag... | 12/17/1991 |
| 5073862 | Method and apparatus for diagnosing problems with the thermodynamic performance of a heat engine A method and apparatus measured and calculates the derived thermodynamic state of a heat-pump or air conditioning system using information from transducers sensing elementary thermodynamic variables in the system. Elementary signals such as pressure, temp... | 12/17/1991 |
| 5070468 | Plant fault diagnosis system The present invention relates to a plant fault diagnosing system for diagnosing the operating conditions of the plant, for example, change in the physical quantity or whether any fault is present in each of the instrumentations or not. This system makes r... | 12/03/1991 |
| 5027751 | Method and apparatus for optimized boiler operation Boiler operations are fine tuned to minimize thermodynamic losses and pressure losses across throttle valves at the output of a boiler. Whenever the boiler is operating outside of desired operating levels, the first action considered is to reduce spray fl... | 07/02/1991 |
| 5023045 | Plant malfunction diagnostic method A plant malfunction diagnostic method is characterized by determining by simulation a change in a plant state variable, forming a pattern among plant state variables obtained by autoregressive analysis of the change in plant state variable, inserting the ... | 06/11/1991 |
| 5009833 | Expert system for surveillance, diagnosis and prognosis of plant operation An expert system is used to perform surveillance, diagnosis and prognosis of a plant such as a nuclear reactor used in electrical power generation. The expert system uses one of current actual plant data, previously stored actual plant data or simulated p... | 04/23/1991 |
| 4965743 | Discrete event simulation tool for analysis of qualitative models of continuous processing system An artificial intelligence design and qualitative modelling tool is disclosed for creating computer models and simulating therein continuous activities, functions and/or behavior using developed discrete event techniquers. Conveniently, the tool is organi... | 10/23/1990 |
| 4920499 | Expert system with natural-language rule updating An expert system for process control, which permits the inference rules to be revised at any time without requiring the specialized skills of a "knowledge engineer". The inference rules are intitially defined by a domain expert who fills in blank fields i... | 04/24/1990 |
| 4907167 | Process control system with action logging An integrated system for process control in which a process supervisor procedure defines parameters for one or more controller systems (or control procedures). The supervisor procedure changes control parameters only in discrete changes, and the decision ... | 03/06/1990 |
| 4885705 | Expert system shell for building photofinishing diagnostic systems The present invention involves a computer-based expert system tool for making decisions regarding photofinishing processes. An expert mentor in the photofinishing area provides specific information both factual knowledge and judgmental knowledge including... | 12/05/1989 |
| 4884217 | Expert system with three classes of rules An expert system wherein the rules are of three classes: (1) retrieval rules, which each associate one of several attributes to an object in accordance with the values of inputs; (2) analysis rules, which selectively associate an attribute with an object,... | 11/28/1989 |
