Imperial College London

ISE-2 Surprise 97 Project

Approaches to Performance Evaluation

 IC Crest
  • Contents
  • Introduction
  • Benchmarking
  • Discrete Event Simulation
  • Modeling using Petrinets
  • Analytical Queuing Models
  • Perturbation Analysis of Discrete Event Dynamic Systems (PADEDS)
  • Conclusions
  • Index
  • Surprise 97 Index

    • Written by Wan Ling Li

    Performance - the capabilities of a machine

    Perturbation Analysis of Discrete Event Dynamic Systems (PADEDS)

    A model of a system will essentially contain a network of queues with their associated queueing models. In perturbation analysis the parameters within the queueing models are modified and the system is then re-examined to see what effect this has.

    In changing the parameters it is possible to then to find out which parts of the system causes a bottleneck. If a bottleneck is found then steps can be taken to reduce its effect on the system. A sensitivity analysis can be used to find out with parts of the system change the output the most. So if in a production plant we wish to increase the productivity of the site, we can undertake a sensitivity analysis and find out the optimum place to spend money on improvements.

    Next Section
    Last Updated 27th May, 1997