7 citations · 8 across the 6 of their papers we have counts for
7 papers
Velocity-Free Horizontal Position Control of Quadrotor Aircraft via Nonlinear Negative Imaginary Systems Theory
Ahmed G. Ghallab, Ian R. Petersen
This paper presents a velocity-free position control strategy for quadrotor unmanned aerial vehicles based on nonlinear negative imaginary (NNI) systems theory. Unlike conventional…
Negative Imaginary Systems Theory for Nonlinear Systems: A Dissipativity Approach
Ahmed G. Ghallab, Ian R. Petersen
Negative imaginary (NI) systems theory is a well-established system theoretic framework for analysis and design of linear-time-invariant (LTI) control systems. In this paper, we ai…
Velocity-free Attitude Control of Quadrotors: A Nonlinear Negative Imaginary Approach
Ahmed G. Ghallab, Ian R. Petersen
In this paper, we propose a new approach to the attitude control of quadrotors, by which angular velocity measurements or a model-based observer reconstructing the angular velocity…
Existence Results by The Method of Upper and Lower Solutions for Volterra Integral Equation on Time Scales
Alaa E. Hamza, Ahmed G. Ghallab
In this article, we investigate the method of upper and lower solutions for Volterra integral equation of the first kind on arbitrary time scale . We establish some exi…
Stability of a Volterra Integral Equation on Time Scales
Alaa E. Hamza, Ahmed G. Ghallab
In this paper, we study Hyers-Ulam stability for integral equation of Volterra type in time scale setting. Moreover we study the stability of the considered equation in Hyers-Ulam-…
Lyapunov-based Stability of Feedback Interconnections of Negative Imaginary Systems
Ahmed G. Ghallab, Mohamed A. Mabrok, Ian R. Petersen
Feedback control systems using sensors and actuators such as piezoelectric sensors and actuators, micro-electro-mechanical systems (MEMS) sensors and opto-mechanical sensors, are a…
Well-Posedness of some nonlinear Volterra-Fredholm integral and integro-dynamic equations on time scales
Alaa E. Hamza, Ahmed G. Ghallab
In this paper we study well posedness of a certain nonlinear Volterra-Fredholm dynamic integral and integro-dynamic equations on unbounded interval from arbitrary time scale. We de…