Westinghouse Electric Corporation

Eaton Corporation

Timothy F Thompson

Xin Zhou

James A Neuner

Thomas J Kenny

Dale Louis Gass

Kingsley F Graham

Douglas A Bauman

John R Smith

William W Wassel

Michael Charles Dadian

David G Theriault

Dhulipala M Rao

Edgar Perez Flores

Robert M Wojcik

Carol A Parsons

David M Tinley

Mark Gould

William J Dipaolo

A method of detecting and locating a micro-interface abnormality within an electrical system having a plurality of conductors and a plurality of electrical connections includes identifying a subset of the plurality of electrical connections by detecting an acoustic signal within the electrical system and analyzing the detected acoustic signal and determining that the detected acoustic signal is indicative of an electrical fault, measuring a contact resistance of each of the subset of the plurality of electrical connections, and identifying at least one of the subset of the plurality of electrical connection points as having a micro-interface abnormality based on the measured contact resistances.

Detection and location of electrical connections having a micro-interface abnormality in an electrical system

An rulebase software system is incorporated into a form data entry system for a digital computer to assure that only complete, consistent and valid data entries are made in accordance with the expert system rulebase. The rulebase is in a simple tabular format which eliminates the need for programming. The system interprets the rulebase tables automatically in order to draw the data forms and subforms displayed on the computer screen. Dependencies between input data fields on a data form and between fields and subforms are embedded in the tables of the rulebase. Valid data entries displayed for a given menu field vary in accordance with certain prior entries, and fields which can only assume one valid value can be automatically filled in with the single value dependent upon the value previously entered for designated other fields. Context sensitive hypertext help forms called by a selected field are dependent upon values previously entered for designated other fields.

Electronic data entry system employing an expert system to facilitate

A generic tool is provided by storing into a PC computer data representing structurally a vertical section and objects to be placed inside the vertical section, and by manipulating virtually with the PC computer selected objects in relation to cases within the vertical section while testing the physical compatibility, so as to build a feasible product configuration to be visually shown by the PC computer as an aid in the actual installation manually of the product with actual such objects and vertical section, for instance to build up a panelboard.

System for implementing a PC computer configuration system for

Method and apparatus for monitoring and diagnosing sensor and interactive based process systems. The knowledge base concerning the process system per se is in the form of a list stored in memory, which list includes domain specific rules in evidence-hypothesis form. This domain dependent information is devoid of means for interconnecting the rules to perform diagnostic services. A completely domain independent set of meta-level rules is stored in memory, which, in response to sensor and/or user input, searches the knowledge base and effectively constructs a rule network through which belief is propagated, to detect and report malfunctions, to output control signals for modifying the operation of the monitored system, and to aid users by providing information relative to malfunctions which pinpoints probable causes. The domain independent rules, in addition to the meta-level rules which search the knowledge base and interconnect domain specific rules, includes procedural rules for choosing which of the meta-level rules to apply when there is a choice. The procedural inference rules are independent and distinct from the meta-level rules which manipulate the knowledge base.

Methods and apparatus for system fault diagnosis and control

Numerous signal conditioning circuits on a plurality of printed circuit boards are calibrated remotely by a signal processing unit which sends coded signals to each board, either sequentially or in parallel, to connect either on-board or off-board test signals to one of the conditioning circuits in place of its field generated input. The processing unit utilizes the actual and expected responses of each conditioning circuit to low and high test signals to generate a gain and an offset which are applied to the conditioned field signal to provide a calibrated signal. The time constant for each conditioning circuit is also measured periodically, or upon a selected temperature change, for use in generating a minimum waiting period for obtaining valid data following transfers between the field generated signals and the test signals.

Method and apparatus for auto-calibration of signal conditioning

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Monroeville, PA, United States of America

Timothy F Thompson