Title: Estimation of job completion times in a dynamic job shop based on static job shop solution
Authors : Heitz, Christoph
Roithner, Tobias
Conference details: IFAC Workshop on Intelligent Manufacturing Systems, Alicante, 2007
Issue Date: 2007
License (according to publishing contract) : Licence according to publishing contract
Type of review: Not specified
Language : German
Subjects : Manufacturing; Modeling
Subject (DDC) : 658.5: Production management
Abstract: We investigate the temporal behaviour of completion time estimates derived from scheduling algorithms that are based on the set of already known and accepted orders (static job shop problem). In a dynamic job shop environment, these estimates change over time, typically increasing. This leads to a systematic error in the completion time estimation based on static job shop algorithms. We propose an approach for calculating this systematic error. Furthermore, a method for compensating this error is derived. For some simple examples, the theory is worked out and compared with simulation results. In all cases, the estimates based on the static algorithm can substantially be improved.
Departement: School of Engineering
Organisational Unit: Institute of Data Analysis and Process Design (IDP)
Publication type: Conference Other
URI: https://digitalcollection.zhaw.ch/handle/11475/5325
Appears in Collections:Publikationen School of Engineering

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