31 citations · 51 across the 17 of their papers we have counts for
6 papers · 1 filter
A structural solution to the monotonic tracking control problem
Lorenzo Ntogramatzidis, Jean-Francois Tregouet, Robert Schmid +1
In this paper we present a method for designing a linear time invariant (LTI) state-feedback controller to monotonically track a constant step reference at any desired rate of conv…
Foundations of negative imaginary systems theory and relations with positive real systems
Augusto Ferrante, Alexander Lanzon, Lorenzo Ntogramatzidis
In this paper we lay the foundations of a not necessarily rational negative imaginary systems theory and its relations with positive real systems theory and, hence, with passivity.…
The Discrete-Time Generalized Algebraic Riccati Equation: Order Reduction and Solutions' Structure
Lorenzo Ntogramatzidis, Augusto Ferrante
In this paper we discuss how to decompose the constrained generalized discrete-time algebraic Riccati equation arising in optimal control and optimal filtering problems into two pa…
A unified method for optimal arbitrary pole placement
Robert Schmid, Lorenzo Ntogramatzidis, Thang Nguyen +1
We consider the classic problem of pole placement by state feedback. We offer an eigenstructure assignment algorithm to obtain a novel parametric form for the pole-placing feedback…
Continuous-Time Singular Linear-Quadratic Control: Necessary and Sufficient Conditions for the Existence of Regular Solutions
Augusto Ferrante, Lorenzo Ntogramatzidis
The purpose of this paper is to close the remaining gaps in the understanding of the role that the constrained generalized continuous algebraic Riccati equation plays in singular l…
Globally monotonic tracking control of multivariable systems
Lorenzo Ntogramatzidis, Jean-Francois Tregouet, Robert Schmid
In this paper we present a method for designing a linear time invariant (LTI) state-feedback controller to monotonically track a constant step reference at any desired rate of conv…