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Using increased order controllers in mixed H2/Hoptimization
1992 Edition, June 1, 1992 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

The problem of minimizing the 2-norm of one transfer function subject to an ∞-norm bound on another transfer function is examined for increased order controllers. It is shown that, unlike controllers under full-state availability, output feedback...

Reduced order mixed H/sub 2//H/sub /spl infin// optimization with a singular H/sub /spl infin// constraint
1994 Edition, Volume 1, January 1, 1994 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

A general mixed H/sub 2//H/sub /spl infin// optimal control problem is considered. The system consists of a plant and stable weights on the H/sub 2/ and H/sub /spl infin// transfer functions, and is linear time-invariant....

H/sub /spl infin// strong stabilization
2001 Edition, Volume 46, December 1, 2001 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

This note presents a technique for designing stable H/sub /spl infin// controllers. Similar to some methods in the existing literature, the proposed method also uses the parameterization of all suboptimal H/sub /spl infin// controllers so that...

H/sub /spl infin// strong stabilization
2001 Edition, Volume 1, January 1, 2001 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Presents a technique for designing stable H/sub /spl infin// controllers. Similar to some methods in the existing literature, the proposed method also uses the parameterization of all suboptimal H/sub /spl infin// controllers so that the...

A time-domain penalty function approach to mixed H/sub 2//H/sub /spl infin//-control using parameter optimization methods
1993 Edition, January 1, 1993 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

In this paper we consider the problem of minimum nominal H/sub 2/-norm with H/sub /spl infin//-constraints for systems with multiple operating points. The performance measure is defined as a weighted sum of the corresponding nominal H/sub...

Generalized H/sub /spl infin// performance and mixed H/sub 2//H/sub /spl infin// optimization for time delay systems
2004 Edition, Volume 1, January 1, 2004 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

In this paper, a multi-objective optimization problem is investigated for a class of nonlinear continuous-time systems with time-varying delays. The controlled plant is supposed to have nonlinear dynamics and time delays which exist simultaneously in the state, the input and...

H/sub infinity / optimal controller discretization
1990 Edition, January 1, 1990 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

A redesign method for discretizing a continuous-time controller is proposed. The resulting hybrid control system, e.g. with continuous-time plant and discrete-time controller, is stable, and performance including the system's intersampling behavior can be optimized by...

A linear matrix inequality approach to synthesizing low order mixed l/sub 1//H/sub p/ controllers
1997 Edition, Volume 1, January 1, 1997 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Mixed objective control problems have attracted much attention since they allow for capturing different performance specifications without resorting to approximations or the use of weighting functions, thus eliminating the need for trial and error type iterations. The paper addresses...

A general H/sub infinity //LTR design problem
1991 Edition, January 1, 1991 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

An alternative approach to the loop transfer recovery (LTR) design problem based on H/sub infinity / optimization is considered. An H/sub infinity //LTR design problem is formulated as an H/sub infinity / optimization of the weighted recovery...

Discrete-time mixed-norm H/sub 2//H/sub /spl infin// controller synthesis
1994 Edition, Volume 1, January 1, 1994 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

H/sub 2//H/sub /spl infin// optimal control synthesis enables the design of controllers for simultaneous rejection of both narrow-band and wide-band disturbances and also has applications in robust control. Synthesis equations in the form of...

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