Title
Improving the reproducibility and control accuracy of TMF experiments with high temperature transients
Date Issued
01 January 2003
Access level
metadata only access
Resource Type
conference paper
Author(s)
Johannes Kepler University Linz
Publisher(s)
American Society for Testing and Materials
Abstract
Three different approaches to minimize control deviations in the case of TMF experiments with high temperature transients (10K/s and higher) will be presented. In the first approach, an empirically derived algorithm is used to calculate a modified temperature command function based on the recorded control deviations. In a second approach, a two-zone model of the plant (specimen, grips, heating and cooling device) is used for control design. The model is first used to design a "soft" PI controller for generating a robust starting output profile. This output profile is then used as a basic reference input profile. The remaining error is minimizes by a "fast" PI controller. A third controller approach is characterized by the determination of an inverse model that is used to define an "ideal" profile of the command variable. This "ideal" profile is then used as a reference input profile.
Start page
282
End page
296
Issue
1428
Language
English
OCDE Knowledge area
Ingeniería de procesos
Sistemas de automatización, Sistemas de control
Subjects
Scopus EID
2-s2.0-8844270207
Source
ASTM Special Technical Publication
ISSN of the container
00660558
Conference
Thermomechanical Fatigue Behavior of Materials: 4th Volume
Sources of information:
Directorio de Producción Científica
Scopus