On controllers performance for a class of time-delay systems: Maximum decay rate

G Oaxaca-Adams, R Villafuerte-Segura - Automatica, 2023 - Elsevier
This paper states some results aiming at finding the parameters of a controller that provides
the maximum decay rate of the closed-loop response for a linear time-invariant time-delay …

Insights on equidistributed real spectral values in second-order delay systems: perspectives in partial pole placement

T Schmoderer, I Boussaada, SI Niculescu… - Systems & Control …, 2024 - Elsevier
In this work, we show that the coexistence of the maximal number of real spectral values of
generic single-delay retarded second-order differential equations guarantees the realness …

Dominant‐pole placement for predictor synthesis

B Rojas‐Ricca, F Castaños… - International Journal of …, 2024 - Wiley Online Library
This article analyzes the high‐gain prediction approach for nonlinear input‐delay systems.
The problem is discussed in the light of weighted homogeneity and input‐to‐state stability …

Multiplicity–Induced–Dominancy property for second–order neutral differential equations with application in oscillation damping

A Benarab, I Boussaada, K Trabelsi… - European journal of …, 2023 - Elsevier
This paper addresses the exponential stability of linear time-delay systems of neutral type. In
general, it is quite a challenge to establish conditions on the parameters of the system in …

Multiplicity-induced-dominancy for delay systems: Comprehensive examples in the scalar neutral case

A Benarab, I Boussaada, SI Niculescu… - European Journal of …, 2023 - Elsevier
This article focuses on the characterization of a particular spectral property called Multiplicity-
induced-dominancy applying for linear dynamical systems described by delay-differential …

[HTML][HTML] On the admissible control-loop delay for the inverted pendulum subject to detuned PDA feedback

T Balogh, B Varszegi, T Insperger - Journal of Sound and Vibration, 2022 - Elsevier
In this paper, we consider the stabilization of φ ̈ (t)− a 0 φ (t)=− kp φ (t− τ− δ p)− kd φ ̇ (t−
τ− δ d)− ka φ ̈ (t− τ− δ a), which describes the control of an inverted pendulum by detuned …

The generic multiplicity-induced-dominancy property from retarded to neutral delay-differential equations: When delay-systems characteristics meet the zeros of …

I Boussaada, G Mazanti, SI Niculescu - Comptes Rendus …, 2022 - numdam.org
In this paper, which is a direct continuation and generalization of the recent works by the
authors [17, 35], we show the validity of the generic multiplicity-induced-dominancy property …

Mid property for delay systems: Insights on spectral values with intermediate multiplicity

I Boussaada, G Mazanti, SI Niculescu… - 2022 IEEE 61st …, 2022 - ieeexplore.ieee.org
This paper focuses on the problem of multiplicity induced dominancy (MID) for a class of
linear time-invariant systems represented by delay-differential equations. If the problem of …

Time-delay control of quadrotor unmanned aerial vehicles: a multiplicity-induced-dominancy-based approach

JJ Castillo-Zamora, I Boussaada… - Journal of Vibration …, 2023 - journals.sagepub.com
The current work exploits the effects of time-delays on the stability of unmanned aerial
vehicles s). In this regard, the main contribution is a symbolic/numeric application of the …

Extending the admissible control-loop delays for the inverted pendulum by fractional-order proportional-derivative controller

T Balogh, T Insperger - Journal of Vibration and Control, 2024 - journals.sagepub.com
Stabilization of the inverted pendulum by fractional-order proportional-derivative (PD)
feedback with two delays is investigated. This feedback law is obtained as a combination of …