The operation of large computer-controlled manufacturing systems

Miscellaneous · Fri Jan 01 00:00:00 EST 1988

OSTI ID:6950214

Upton, D M

This work examines methods for operation of large computer-controlled manufacturing systems, with more than 50 or so disparate CNC machines in congregation. The central theme is the development of a distributed control system, which requires minimal central supervision, and allows manufacturing system re-configuration without extensive control software re-writes. Provision is made for machines to learn from their experience and provide estimates of the time necessary to effect various tasks. Routing is opportunistic, with varying degrees of myopia depending on the prevailing situation. Necessary curtailments of opportunism are built in to the system, in order to provide a society of machines that operate in unison rather than in chaos. Negotiation and contention resolution are carried out using a UHF radio communications network, along with processing capability on both pallets and tools. Graceful and robust error recovery is facilitated by ensuring adequate pessimistic consideration of failure modes at each stage in the scheme. Theoretical models are developed and an examination is made of fundamental characteristics of auction-based scheduling methods.

• Research Organization: Purdue Univ., Lafayette, IN (USA)
• OSTI ID: 6950214
• Resource Relation: Other Information: Thesis (Ph. D.)
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
COMPUTER-AIDED MANUFACTURING
COMPUTERIZED CONTROL SYSTEMS
DISTRIBUTED DATA PROCESSING
ARRAY PROCESSORS
ERRORS
FAILURE MODE ANALYSIS
ROUTING
TASK SCHEDULING
CONTROL SYSTEMS
DATA PROCESSING
MANUFACTURING
PROCESSING
SYSTEM FAILURE ANALYSIS
SYSTEMS ANALYSIS
420200* - Engineering- Facilities
Equipment
& Techniques
990200 - Mathematics & Computers