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A Frequency Domain Criterion for Robustly Stabilizing a Family of Interval Plants
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Considered in this paper is the problem of robust stabilization of a family of interval plants by a single fixed compensator. A frequency domain sufficient condition determines the closed-loop ...
On the Generation of QFT Bounds for General Interval Plants
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Considered in this paper is the question of synthesizing a fixed compensator for an interval plant so that (i) robust stability and (ii) robust disturbance rejection in the sense of Quantitative ...
Stabilizability of Unstable Linear Plants Under Bounded Control
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Considered in this paper is the problem of stabilizing a linear unstable plant under bounded control. It is shown that a linear strictly unstable plant can never be globally stabilized under ...
Robust Stability of Closed-Loop Systems Resulting From Nonsequential MIMO-QFT Design
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Considered in this paper is the question of whether a compensator realized by the MIMO-QFT nonsequential method robustly stabilizes the entire plant family. In order to establish our results, ...
Frequency Domain Criteria for Synthesizing Robustly Stabilizing Compensators for a Class of Interval Plants
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Considered in this paper is the robust stabilization of a special family of single-input single-output, interval plants in which only the denominator polynomial or the plant poles are uncertain. ...
A New Formulation of Multiple-Input Multiple-Output Quantitative Feedback Theory
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The QFT robust performance problem in its entirety may be reduced to an H∞ problem by casting each specification as a frequency domain constraint on the nominal sensitivity function and the ...
Robust Stability of Plants With Mixed Uncertainties and Quantitative Feedback Theory
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Quantitative Feedback Theory (QFT) has often been criticized for lack of a rigorous mathematical theory to support its claims. Yet it is known to be a very effective design methodology. In ...
An H∞ Formulation of Quantitative Feedback Theory
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The QFT robust performance problem in its entirety may be reduced to an H∞ problem by casting each specification as a frequency domain constraint either on the nominal sensitivity function or ...
Feedforward Controllers and Tracking Accuracy in the Presence of Plant Uncertainties
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In the absence of plant parameter uncertainty feedforward controllers can be synthesized to achieve perfect continuous tracking. When plant has uncertainties it is, in general, impossible to ...