Optimized Production Technology

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The Optimized Production Technology , shortly OPT , is a 1980 by Eliyahu M. Goldratt developed production planning process based on a secret optimization algorithm . The optimization goal in production companies is to achieve the program with the highest contribution margin .

The software was initially very successful by the Creative Output Inc. sold. After a serious legal battle with Mars Incorporated, that changed and bankruptcy followed in the late 1980s. The license from OPT went to the British Scheduling Technologies Group. which, among other things, also created an interface to the SAP R / 3 software .

Major employees of Creative Output co-founded i2 Technologies in 1988 , which among other things sells post-programmed software. OPT itself is no longer offered. The algorithm, which was always kept secret, was not disclosed even after the sales stop.

OPT philosophy

In the OPT philosophy 9 basic rules are mentioned:

  1. Align the production flow, not the capacity.
  2. The degree of utilization of a non-bottleneck capacity is not determined by its own capacity, but by some other limitation in the system.
  3. Operation and use of a capacity are not synonymous.
  4. An hour lost in a bottleneck is an hour lost for the entire system.
  5. An hour gained on a non-bottleneck is meaningless.
  6. Bottlenecks determine both throughput and stocks.
  7. The transport lot can differ from the processing lot and in many cases it should.
  8. The processing lot must remain variable and should not be immutable.
  9. Occupancy plans should be drawn up taking into account all the necessary requirements. Lead times are the result of planning and cannot be determined in advance.

The sum of the local optima does not correspond to the global optimum.

literature

  • Eliyahu Moshe Goldratt, Jeff Cox: The Goal: A process of ongoing improvement. 3rd, revised. Edition. The North River Press, Great Barrington, MA, USA 2004, ISBN 0-88427-178-1 . (20th Anniversary Edition, 1st Edition 1984)
  • Eliyahu Moshe Goldratt, Jeff Cox: The goal: Top performance in manufacturing. McGraw-Hill, Hamburg 1987, ISBN 3-89028-077-3 .
  • Katja Windt : Steering. In: D. Arnold, H. Isermann, A. Kuhn, H. Tempelmeier (eds.): Handbuch Logistik. 2nd Edition. Springer, Berlin 2004, ISBN 3-540-40110-5 , pp. B3-37.
  • Gero Zimmermann: PPS methods put to the test. Modern industry publishing house, Landsberg / Lech 1987, ISBN 3-478-41250-1 .

credentials

  1. ↑ MARS successfully sued for access to the source code and was able to prove that OPT was not suitable for MARS, i.e. they had been promised product features that did not exist. Cf. Dan Trietsch: Why a Critical Path By Any Other Name Would Smell Less Sweet? Towards a Holistic Approach to Pert / Cpm . In: Project management journal. 36, 1, 2005, pp. 27-36, read on July 20, 2011.
  2. ↑ Donald Shobrys: The History of APS. ( Memento of May 5, 2006 in the Internet Archive ) (PDF). Retrieved May 26, 2010.
  3. ^ Christoph Dill: Optimized Production Technology (OPT). ( Memento from July 15, 2012 in the web archive archive.today ) Uni-Karlsruhe. Retrieved on: February 26, 2010.
  4. ↑ Gero Zimmermann: PPS methods on the test bench. Verlag modern industry, Landsberg / Lech 1987, ISBN 3-478-41250-1 , p. 28.