Premium
Non‐linear stochastic controllers for semiactive and regenerative systems with guaranteed quadratic performance bounds—Part 2: Output feedback control
Author(s) -
Scruggs J. T.,
Taflanidis A. A.,
Iwan W. D.
Publication year - 2007
Publication title -
structural control and health monitoring
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.587
H-Index - 62
eISSN - 1545-2263
pISSN - 1545-2255
DOI - 10.1002/stc.195
Subject(s) - control theory (sociology) , linear quadratic gaussian control , controller (irrigation) , linear quadratic regulator , gaussian , full state feedback , lti system theory , noise (video) , quadratic equation , state (computer science) , engineering , linear system , optimal control , control (management) , control engineering , computer science , mathematics , mathematical optimization , algorithm , geometry , artificial intelligence , mathematical analysis , physics , quantum mechanics , agronomy , image (mathematics) , biology
This paper is a continuation of the accompanying paper, which presented an approach to the design of non‐linear controllers for semiactive and regenerative systems, for which the closed‐loop system exhibits an analytically guaranteed bound on mean‐square performance, as measured by the quadratic‐Gaussian (QG) performance measure. The development assumed that the full state of the dynamic system was available for feedback. This paper extends the performance‐guaranteed controller (PGC) design approach to the more realistic case for which sensory feedback constitutes only part of the entire system state. Cases are considered with and without sensor noise. It is shown that in both cases PGCs may be designed so as to outperform optimal linear time‐invariant viscous damping, even in the presence of significant sensor noise, although typically by a smaller margin than in the full‐state feedback case. The proposed controller design is illustrated on the same structural control example considered in the accompanying paper. Copyright © 2007 John Wiley & Sons, Ltd.