A Method to Determine Transition Time for Experiments in Dynamic Processes

作者：Vanhatalo Erik^*; Kvarnstrom Bjorn; Bergquist Bjarne; Vannman Kerstin

来源：Quality Engineering, 2011, 23(1): 30-45.

DOI：10.1080/08982112.2010.495099

• blast furnace
• design of experiments
• intervention analysis
• principal component analysis
• time series analysis
• transfer function-noise model
• transition time

Process dynamics is an important consideration during the planning phase of designed experiments in dynamic processes. After changes of experimental factors, dynamic processes undergo a transition time before reaching a new steady state. To minimize experimental time and reduce costs and for experimental design and analysis, knowledge about this transition time is important. In this article, we propose a method to analyze process dynamics and estimate the transition time by combining principal component analysis and transfer function-noise modeling or intervention analysis. We illustrate the method by estimating transition times for a planned experiment in an experimental blast furnace.

• 出版日期2011