Abstract:
The intelligent process control system (IPCS), an integrated environment for developing complex process control and automation systems is discussed, focusing on its real-...Show MoreMetadata
First Page of the Article
Abstract:
The intelligent process control system (IPCS), an integrated environment for developing complex process control and automation systems is discussed, focusing on its real-time fault diagnostics capability. IPCS has been used to build a supervisory monitoring and diagnostics system for a cogenerator plant. The requirements and problems specific to such systems are examined. The key concepts involved in fault modeling in IPCS are explicated. The IPCS reasoning technique is described in some detail. The IPCS tool kit is also described. IPCS's performance in the cogenerator plant application is reported.<>
Published in: IEEE Expert ( Volume: 6, Issue: 3, June 1991)
DOI: 10.1109/64.87689
First Page of the Article
Citations are not available for this document.
Cites in Patents (6)Patent Links Provided by 1790 Analytics
1.
Baudenbacher, Franz; Wikswo, John P.; Balcarcel, R. Robert; Cliffel, David; Eklund, Sven; Gilligan, Jonathan Mark; McGuinness, Owen; Monroe, Todd; Prokop, Ales; Stremler, Mark Andrew; Werdich, Andreas Augustinus, "APPARATUS AND METHODS FOR MONITORING THE STATUS OF A METABOLICALLY ACTIVE CELL"
Inventors:
Baudenbacher, Franz; Wikswo, John P.; Balcarcel, R. Robert; Cliffel, David; Eklund, Sven; Gilligan, Jonathan Mark; McGuinness, Owen; Monroe, Todd; Prokop, Ales; Stremler, Mark Andrew; Werdich, Andreas Augustinus
Abstract:
An apparatus and methods for monitoring the status of a cell that consumes oxygen. In one embodiment of the present invention, the method includes the steps of confining the cell in a sensing volume, measuring dynamically intracellular or extracellular signaling of the cell, and determining the status of the cell from the measured intracellular or extracellular signaling of the cell.
Assignee:
VANDERBILT UNIVERSITY
Filing Date:
06 August 2002
Grant Date:
27 April 2010
Patent Classes:
Current U.S. Class:
436034000, 422082010, 422090000, 422091000, 422092000, 435001100, 435002000, 435003000, 435029000, 435285200, 435286100, 435287100, 435366000, 435373000, 435374000, 436002000, 436050000, 436062000, 436063000, 436068000, 436147000, 436149000
Current International Class:
G01N0330000
2.
Evans, Robert; Wong, Did Bun, "USING INK TEMPERATURE GAIN TO IDENTIFY CAUSES OF WEB BREAKS IN A PRINTING SYSTEM"
Inventors:
Evans, Robert; Wong, Did Bun
Abstract:
A device that determines conditions under which a web break is more likely to occur in a printing system stores data pertaining to ink temperature or ink temperature gain. The device then implements a correlation analysis, such as a decision-tree induction analysis, using the stored data to determine if there is a correlation between the one or more attributes and the occurrence of a web break. The device has a multiplicity of ink fountains and includes a first temperature sensor that measures a first ink temperature and a second temperature that measures a second ink temperature. A controller compares the first ink temperature to the second ink temperature to determine an ink temperature gain, compares the ink temperature gain to a desired ink temperature gain range and generates an output signal based on the comparison.
Assignee:
R R DONNELLEY & SONS CO
Filing Date:
15 July 1999
Grant Date:
14 January 2003
Patent Classes:
Current U.S. Class:
706061000, 702182000, 702185000, 706060000, 714E11155
Current International Class:
G06N0050200000
3.
Evans, Robert, "SYSTEM AND METHOD FOR PARTITIONING A REAL VALUED ATTRIBUTE EXHIBITING WINDOWED DATA CHARACTERISTICS"
Inventors:
Evans, Robert
Abstract:
A system and method are disclosed for partitioning a real-value windowed attribute into ranges, wherein the values within each range generally correspond to a particular class of results associated with runs of a process. The system and method determines a low range having attribute values generally corresponding to a first class, a middle range having attribute values generally corresponding to a second class, and an upper range having attribute values generally corresponding to the first class. The system and method may be used in a system that produces an induction tree useful in developing an indication of a cause of a particular result of a process from values associated with at least one real-valued, windowed attribute that arises during the runs of the process.
Assignee:
R R DONNELLEY & SONS CO
Filing Date:
19 February 1998
Grant Date:
01 January 2002
Patent Classes:
Current U.S. Class:
706012000, 342064000, 342383000, 704224000, 714E11155
Current International Class:
G06N0070000000
4.
Xie, Zhenhua; Wong, Did Bun; Evans, Robert, "DEVICE AND METHOD FOR IDENTIFYING CAUSES OF WEB BREAKS IN A PRINTING SYSTEM ON WEB MANUFACTURING ATTRIBUTES"
Inventors:
Xie, Zhenhua; Wong, Did Bun; Evans, Robert
Abstract:
A device and method that determine conditions under which a break in a web of a printing system is more likely to occur store data pertaining to one or more attributes associated with the manufacture of each web used in a plurality of printing runs. The device and method then implement a correlation analysis, such as a decision-tree induction analysis, using the stored data to determine if there is a correlation between the one or more web manufacturing attributes and the occurrence of a web break. The device and method may store web manufacturing data indicating one or more of a mill site, a web manufacturing machine, a date, a reel number, a reel set, a log position, any auxiliary web manufacturing equipment, a web tensile strength, a web moisture content and/or a coefficient of friction associated with the manufacture of the webs used in the plurality of printing runs.
Assignee:
R R DONNELLEY & SONS
Filing Date:
01 May 1997
Grant Date:
01 August 2000
Patent Classes:
Current U.S. Class:
706060000, 706048000, 714E11155
Current International Class:
G06F0170000000
5.
Xie, Zhenhua; Wong, Did Bun; Evans, Robert, "DEVICE AND METHOD FOR DECREASING WEB BREAKS IN A PRINTING SYSTEM BASED ON WEB TENSION RATIOS"
Inventors:
Xie, Zhenhua; Wong, Did Bun; Evans, Robert
Abstract:
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 printing system. The device and method also measure two are more web tensions during operation of the printing system, calculate a web tension ratio and compare that calculated web tension ratio with the determined web tension ratio range. When the calculated web tension ratio falls outside of the determined web tension ratio range, the device and method alert a user to the fact that a condition leading to a web break is present and/or control the measured web tensions to drive the calculated web tension ratio to be within the determined web tension ratio range.
Assignee:
R R DONNELLEY & SONS CO
Filing Date:
01 May 1997
Grant Date:
28 December 1999
Patent Classes:
Current U.S. Class:
706061000, 706903000, 706904000, 706906000, 714E11155
Current International Class:
G06F0170000000
6.
Evans, Robert B., "SYSTEM AND METHOD FOR IDENTIFYING CONDITIONS LEADING TO A PARTICULAR RESULT IN A MULTI VARIANT SYSTEM"
Inventors:
Evans, Robert B.
Abstract:
A system and method develops an indication of a cause of a particular result of a process from values associated with attributes which arise during runs of the process. The system includes a data entry device which permits a user to enter data indicating the values of the attributes and a class associated with each of the runs of the process, a memory which stores the data, a processing unit which produces an induction tree having multiple nodes and an output device which provides an indication of the induction tree to a user. At each of a plurality of the nodes of the induction tree, the processing unit divides the values associated with the attributes into value groups, allows a user to select any one of the attributes and designates a value group of the selected attribute as an endpoint of an induction tree when the value group satisfies an endpoint criterion and, otherwise, designates the value group of the selected attribute as a branching point of the induction tree.
Assignee:
R R DONNELLEY & SONS CO
Filing Date:
15 February 1994
Grant Date:
02 December 1997
Patent Classes:
Current U.S. Class:
706012000, 706059000, 714E11155
Current International Class:
G06F0151800000
