Title :
Robust control for high-performance materials testing
Author :
Bailey, F.N. ; Cockburn, J.C. ; Dee, A.
Author_Institution :
Dept. of Electr. Eng., Minnesota Univ., Minneapolis, MN, USA
fDate :
4/1/1992 12:00:00 AM
Abstract :
The use of root-locus-based robust design techniques in the design of a digital controller for a high-performance variable-amplitude fatigue test is described. Evaluation of the resulting controller on a prototype laboratory materials testing system, designed to simulate the mechanical stress loads experienced by certain aircraft components, shows that it meets design performance goals of 0.25% specimen load accuracy while providing robustness to specimen compliance over a 10 to 1 range. This performance significantly exceeds that obtained with traditional hand-tuned controllers.<>
Keywords :
aerospace test facilities; automatic testing; computerised instrumentation; digital control; fatigue testing; laboratory apparatus and techniques; materials testing; root loci; stability; aircraft components; digital controller; high-performance materials testing; high-performance variable-amplitude fatigue test; mechanical stress loads; robust control; root-locus-based robust design techniques; specimen compliance robustness; specimen load accuracy; Aerospace control; Aircraft; Digital control; Fatigue; Laboratories; Materials testing; Mechanical variables control; Robust control; Stress control; Virtual prototyping;
Journal_Title :
Control Systems, IEEE
