Generating a reliability analysis by identifying causal relationships between events in an event-based manufacturing system
First Claim
Patent Images
1. A method for analyzing reliability of a manufacturing system, said method comprising:
- receiving an event chronology having a plurality of chronologically ordered event records, each of the plurality of chronologically ordered event records having a machine section value associated therewith;
identifying an adverse event record in the received event chronology;
determining a relationship between the adverse event record and at least one previous event record in the event chronology by comparing the machine section value of the identified adverse event record and the machine section value of the previous event record; and
incrementing a value representative of a correlation between the identified adverse event record and the previous event record as a function of the determined relationship.
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Abstract
Analyzing an event chronology record to permit identification of periods of a production sequence that correspond to a high probability of failure. Systems and methods include receiving an event chronology for a particular machine in the production sequence and for a particular time interval. A reliability analysis system accesses process flow information to determine whether a particular event in the event chronology is related to a subsequent adverse event within a predefined event window.
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Citations
65 Claims
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1. A method for analyzing reliability of a manufacturing system, said method comprising:
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receiving an event chronology having a plurality of chronologically ordered event records, each of the plurality of chronologically ordered event records having a machine section value associated therewith;
identifying an adverse event record in the received event chronology;
determining a relationship between the adverse event record and at least one previous event record in the event chronology by comparing the machine section value of the identified adverse event record and the machine section value of the previous event record; and
incrementing a value representative of a correlation between the identified adverse event record and the previous event record as a function of the determined relationship. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. One or more computer-readable media having computer-executable components for analyzing reliability of a manufacturing process, said components comprising:
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an interface component for receiving an event chronology having a plurality of chronologically ordered event records, each of the plurality of chronologically ordered event records having a machine section value associated therewith;
a process flow component for identifying a causal relationship between the event records in the event chronology received by the interface component by identifying an adverse event record in the event chronology and determining if the machine section value of the identified adverse event record and the machine section value of at least one previous event record in the event chronology are related; and
a display component for displaying the identified causal relationship to a user. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. A system for analyzing the reliability of a manufacturing process having one or more machine sections, said system comprising:
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an event chronology having a plurality of chronologically ordered event records, each of the plurality of chronologically ordered event records having a machine section value associated therewith;
a memory area for storing process flow information identifying at least one relationship between machine section values; and
a processor configured to execute computer-executable instructions for identifying a causal relationship between at least two of the event records in the event chronology by accessing the process flow information stored in the memory area. - View Dependent Claims (22, 23, 24)
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25. In a computer system having a user interface including a display and a user interface selection device, a method for enabling a reliability analysis of a production sequence, said method comprising:
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displaying the user interface to a user on the display, the user interface defining a time interval form and a target location form;
receiving from the user via the user interface selection device a time interval value from the time interval form;
receiving from the user via the user interface selection device a target location value from the target location form;
receiving an extraction command from the user via the user interface selection device;
extracting, in response to the received extraction command, delay data and raw material usage data from one or more data tables as a function of the received time interval value and the received target location value;
merging the extracted delay data and raw material usage data into an event chronology, said event chronology comprising a plurality of chronologically ordered event records, each of the plurality of chronologically ordered event records having a machine section associated therewith;
identifying an adverse event record in the event chronology; and
if the machine section of the identified adverse event record and the machine section of at least one previous event record in the event chronology are related, incrementing a value on the display, said value being representative of a correlation between the identified adverse event record and the previous event record. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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42. A user interface for enabling a reliability analysis of a production sequence, said user interface having a display and providing a report and a data set used to generate the report, said user interface comprising:
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a start-up reliability portion for displaying on the display a tabulation of start-up failure events for a target machine during a time interval; and
an efficiency portion for displaying on the display splice efficiency data for the target machine during the time interval. - View Dependent Claims (43, 44, 45)
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46. A user interface for enabling a reliability analysis of a production sequence, said user interface having a display and providing a report and a data set used to generate the report, said user interface comprising:
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a first field for displaying classification information on the display, said classification information specifying a target machine and a time interval;
a second field for displaying on the display a data set summary for the target machine during the time interval;
a third field for displaying on the display a plurality of delay events for the target machine during the time interval categorized by process location;
a fourth field for displaying on the display a tabulation of start-up failure events for the target machine during the time interval; and
a fifth field for displaying on the display splice efficiency data for the target machine during the time interval. - View Dependent Claims (47, 48, 49, 50, 51, 52, 53, 54, 55)
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56. A computer-readable medium having stored thereon a data structure representing process flow information in an event-based manufacturing process, said data structure comprising:
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a first field storing a value identifying a machine section; and
a second field storing a plurality of values representing a list of machine sections related in the manufacturing process to the machine section identified in the first field. - View Dependent Claims (57)
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58. A system for enabling a reliability analysis for a production sequence, said system comprising:
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a chronology tool for building an event chronology from data collected from an event-based manufacturing system, said event chronology including a chronologically ordered sequence of event records pertaining to delay data and material usage data; and
a reliability analysis tool for producing a report from the event chronology built by the chronology tool, said report including the event chronology, said report further including a plurality of dimensions, said dimensions including a measure of reliability during machine start, a measure of reliability of a running operation, and a measure of reliability per asset in the production sequence and per time frame. - View Dependent Claims (59, 60, 61, 62, 63, 64, 65)
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Specification