Computer apparatuses and processes for analyzing a system having false start events

• US 20020069044A1
• Filed: 05/03/2001
• Published: 06/06/2002
• Est. Priority Date: 05/04/2000
• Status: Abandoned Application

• Current Assignee: The Procter & Gamble Company
• Original Assignee: The Procter & Gamble Company
• Inventors: Caporale, Donna Marie, Martz, Harry Franklin Jr., Lange, Thomas Jerome, Koehler, Arthur Joseph, Looney, Michael Timothy, Berg, Eric Christopher
• Application Number:
  US09/848,520
• Publication Number:
  US 20020069044A1
• Time in Patent Office: Days
• US Class Current: 703/22
• CPC Class Codes: G05B 17/02 electric
• CPC Class Codes: G05B 19/41885 characterised by modeling, simulation of the manufacturing system
• CPC Class Codes: G05B 2219/32348 Process reengineering, rethink manufacturing process, continuous improve
• CPC Class Codes: G05B 2219/32349 Simulate effect of stoppages of production facilities, operate as function of simulation
• CPC Class Codes: G05B 23/0283 Predictive maintenance, e.g. involving the monitoring of a system and, based on the monitoring results, taking decisions on the maintenance schedule of the monitored system; Estimating remaining useful life [RUL] preventive maintenance, i.e. planning maintenance according to the available resources without monitoring the system G06Q10/06
• CPC Class Codes: G06Q 10/06 Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
• CPC Class Codes: Y02P 90/02 Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Abstract

Computer apparatuses and processes for analyzing a system are provided. The apparatuses and processes incorporate steps of collecting data from a first system, wherein the first system has a plurality of failure modes and the data relates to the failure modes, parameterizing the data for use in a simulation of a second system, and executing a simulation of the second system. The step of executing the simulation also includes determining whether the second system will encounter a first false start event based upon the data collected from the first system.

Claims

1. A simulation process, comprising the following steps:

collecting data from a first system, wherein said first system has a plurality of failure modes and said data relates to said failure modes;

parameterizing said data for use with a computer program simulating a second system; and

executing said computer program simulating said second system, wherein said executing step comprises the steps of determining whether said second system will encounter a first false start event based upon said data collected from said first system.

2. The process of claim 1, wherein said first system and said second system are the same.

3. The process of claim 2, wherein said first and second systems are manufacturing systems.

4. The process of claim 2, further comprising the step of analyzing said first system to determine said failure modes.

5. The process of claim 4, wherein said executing step further comprises the step of calculating an uptime for each failure mode.

6. The process of claim 5, wherein said executing step further comprises the step of determining which of said failure modes causes a first loss event for said second system.

7. The process of claim 6, wherein said executing step further comprises the step of calculating a downtime for said failure mode which causes said first loss event for said second system.

8. The process of claim 7, wherein said downtime is determined from one of a plurality of downtime distributions.

9. The process of claim 4, wherein said failure modes include a plurality of cumulative cause failure modes and a plurality of competing cause failure modes.

10. The process of claim 9, wherein said executing step further comprises the steps of:

calculating a first uptime for each cumulative cause failure mode;

calculating a first uptime for each competing cause failure mode;

determining which of said cumulative cause failure modes and competing cause failure modes causes said first loss event of said second system by selecting the smallest value of said first uptimes; and

calculating a downtime for said failure mode which causes said first loss event of said second system.

11. The process of claim 9, wherein said executing step further comprises the step of:

if said failure mode which causes said first loss event of said second system is a cumulative cause failure mode, then calculating a second uptime for only said cumulative cause failure mode which causes said first loss event for said second system and calculating a second uptime for each of said competing cause failure modes.

12. The process of claim 1, wherein said executing step further comprises the steps of:

if there is a first false start loss event, then calculating a downtime for said first false start loss event; and

determining whether said second system will encounter a second false start loss event following said downtime for said first false start loss event.

13. The process of claim 1, wherein said executing step further comprises the step of outputting a reliability value for said second system.

14. The process of claim 13, wherein said reliability value is an availability.

15. The process of claim 13, wherein the error of said reliability value is less than about three percent.

16. The process of claim 13, further comprising the step of modifying said first system.

18. A program product comprising a signal bearing medium embodying a program of machine-readable instructions executable by a digital processing apparatus to perform the steps of claim 17.

19. The program product of claim 18, wherein said signal bearing medium is an optical disk or a magnetic disk.

20. The program product of claim 18, wherein said signal bearing medium is at least a portion of a computer network.

21. The program product of claim 18, wherein said signal bearing medium is a carrier wave.

17. A computerized simulation process, comprising the following steps:

receiving values for a plurality of parameters calculated from data collected from a first system, wherein said first system has a plurality of failure modes and said data relates to said failure modes; and

determining whether a second system will encounter a first false start loss event based upon said data collected from said first system.

22. An article of manufacture, comprising:

at least one computer; and

a program product comprising a signal bearing medium embodying a program of machine-readable instructions executable by a digital processing apparatus to perform the steps of claim 17.