Petri net modeling and real-time control of dual-arm cluster tools with residency time constraint and activity time variations

Document Type

Conference Proceeding

Publication Date

11-3-2008

Abstract

Because of residency time constraints and activity time variation of cluster tools, it is very difficult to operate them. This paper addresses their real-time control issues. A Petri net (PN) model is developed to model them. This model describes the robot activity sequence with robot waits included. Via this model, to operate a cluster tool is to determine robot wait times and a two-level operation architecture is proposed, which includes an off-line periodic scheduler and real-time controller. By this approach, the system can adapt to random activity time variation. A cluster tool derived as a not-always- schedulable system by the existing methods is shown always-schedulable by using the proposed innovative approach. ©2008 IEEE.

Identifier

54949093664 (Scopus)

ISBN

[9781424420230]

Publication Title

4th IEEE Conference on Automation Science and Engineering Case 2008

External Full Text Location

https://doi.org/10.1109/COASE.2008.4626482

First Page

109

Last Page

114

This document is currently not available here.

Share

COinS