Browsing by Author "Skarpetis, M. G."
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Automatic steering control of unmanned vehicles
Koumboulis, F. N.; Skarpetis, M. G. (2000)The problem of robust automatic steering of an autonomous unmanned vehicle is studied. The problem is solved using a robust PD feedback controller feeding back the path error and the front steering angle. The design goal ... 
Command following and disturbance rejection for drillstring systems
Skarpetis, M. G.; Koumboulis, F. N.; Ladopoulos, T. (2000)In this paper a PD state feedback law is proposed to control the angular velocity of the bit of an drillstring system. The design objective is: the angular velocity of the bit to follow a desired signal independently from ... 
Controller design for lateral manoeuvres in electromagnetic wind tunnels
Koumboulis, F. N.; Skarpetis, M. G. (1996)The roll angle, the yaw angle and the sideslip position of test aircrafts in electromagnetic wind tunnels, are independently controlled. The problem is proven to be always solvable by applying a static state feedback law ... 
Decoupling of the longitudinal modes of advanced aircraft
Skarpetis, M. G.; Koumboulis, F. N. (1996) 
Inputoutput decoupling for linear systems with nonlinear uncertain structure
Koumboulis, F. N.; Skarpetis, M. G. (1996)in this paper the problem of inputoutput decoupling for linear systems with nonlinear uncertain structure, via an independent of the uncertainties static state feedback law, is studied and solved for the first time. The ... 
Multi  Objective robust control for 4WS cars
Skarpetis, M. G.; Koumboulis, F. N. (2000)The problem of robust regional stabilization with simultaneous robust triangular decoupling (RRSRTD) for a four wheel steering car (4WS) is studied. First the robust triangular technique is applied to the 4WS car in order ... 
Noninteracting control for helicopter in straight horizontal flight
Koumboulis, F. N.; Skarpetis, M. G.; Griparis, M. K. (1998)Pitch angle and forward velocity are decoupled via a static state feedback law for the case of helicopter in straight horizontal flight. The set of stability derivatives for which decoupling is satisfied, is explicitly ... 
Numerical integration of fluid dynamics problems by discrete dynamical systems
Koumboulis, F. N.; Skarpetis, M. G.; Mertzios, B. G. (2000)A discrete time algorithm for the numerical solution of the NavierStokes equations, namely the set of nonlinear partial differential equations (PDEs) characterizing the how of viscous and compressible fluids is presented. ... 
On the Derivation of the Nonlinear Discrete Equations Numerically Integrating the Euler PDEs
Koumboulis, F. N.; Skarpetis, M. G.; Mertzios, B. G. (1998)The Euler equations, namely a set of nonlinear partial differential equations (PDEs), mathematically describing the dynamics of inviscid fluids are numerically integrated by directly modeling the original continuousdomain ... 
On the evaluation of the MD passive WDF discretization method for a flow through cylinder
Koumboulis, F. N.; Skarpetis, M. G.; Mertzios, B. G. (2000)In this paper a complete algorithm is developed to evaluate the multidimensional (MD) wave digital filter (WDF) method for the numerical integration of nonlinear (NL) partial differential equations (PDEs), and particularly ... 
Output feedback decoupling of linear systems with nonlinear uncertain structure
Koumboulis, F. N.; Skarpetis, M. G. (1996)The problem of inputoutput decoupling for linear systems with nonlinear uncertain structure, via an independent of the uncertainties static output feedback law, is solved. The necessary and sufficient conditions for the ... 
Pitch and flight path control with simultaneous forward gust rejection
Skarpetis, M. G.; Koumboulis, F. N.; Koussiouris, T. G. (1999)The problem of rejecting atmospheric disturbances with simultaneous inputoutput decoupling of the pitch angle and the flight path angle of an aircraft, is studied. The problem is proven to be solvable for almost all flight ... 
Robust discretization algorithms for the numerical intergration of nonlinear PDEs with application to a generalized capacitor
Koumboulis, F. N.; Skarpetis, M. G.; Mertzios, B. G. (1998)Numerical integration of nonlinear (NL) partial differential equations (PDEs) is studied via approximating the original continuousdomain physical system by a discrete multidimensional (MD) and passive system, using ... 
Robust disturbance decoupling with simultaneous exact model matching via static measurement output feedback
Koumboulis, F. N.; Skarpetis, M. G. (1999)The problem of robust exact model matching with simultaneous robust disturbance decoupling for linear systems with nonlinear uncertain structure (NLUS) and with measurable and non measurable disturbances is solved via an ... 
Robust disturbance rejection for left invertible systems with measurable and nonmeasurable disturbances
Koumboulis, F. N.; Skarpetis, M. G. (1996)The problem of robust disturbance rejection for left invertible linear systems, with nonlinear uncertain structure and with measurable and nonmeasurable disturbances, is studied and solved for the first time. The necessary ... 
Robust disturbance rejection for leftinvertible linear systems with nonlinearuncertain structure
Koumboulis, F. N.; Skarpetis, M. G. (1999)The problem of robust disturbance rejection for left invertible linear systems, with nonlinear uncertain structure and with measurable and nonmeasurable disturbances, is solved via an independent from the uncertainties ... 
Robust disturbance rejection with simultaneous robust inputoutput decoupling
Koumboulis, F. N.; Skarpetis, M. G. (1997)The problem of robust disturbance rejection with simultaneous robust inputoutput decoupling of linear systems with nonlinear uncertain structure is solved. The controller is static and independent of the uncertainties. ... 
Robust exact model matching via PD feedback with application to DC servo motor
Koumboulis, F. N.; Skarpetis, M. G. (1996)The problem of exact model matching for single input single output linear systems with nonlinear uncertain structure, via an independent of the uncertainties PD state and output feedback, is studied. The necessary and ... 
Robust inputoutput decoupling via static measurement output feedback
Koumboulis, F. N.; Skarpetis, M. G. (1999)In this paper the problem of robust inputoutput decoupling for linear systems with nonlinear uncertain structure (NLUS), via an independent from the uncertainties static measurement output feedback law, is studied. The ... 
Robust Morgan's problem
Koumboulis, F. N.; Koussiouris, T. G.; Skarpetis, M. G. (2004)The robust Morgan's problem, via restricted static state feedback and a constant precompensator, is studied for nonsquare linear timeinvariant systems with nonlinear uncertain structure. Sufficient solvability conditions ...