Results 21 to 30 of about 20,487,627 (154)
International Journal of Aerospace Engineering, Volume 2022, Issue 1, 2022., 2022 This paper investigates an adaptive backstepping control based on the immersion‐and‐invariance (I&I) method for a rotorcraft’s trajectory‐tracking control problem. To effectively cope with both parametric uncertainties and external disturbances affecting all forces and moments of a rotorcraft, the I&I‐based disturbance observer is designed and combined
Yoo-Seung Choi +5 more
wiley +1 more source
Quantized‐feedback hands‐off control for nonlinear systems
IET Control Theory &Applications, Volume 15, Issue 10, Page 1364-1374, July 2021., 2021 Abstract This paper addresses a quantized feedback hands‐off control for a class of nonlinear systems. Here, [K,KL] sector is constructed with the suitable choice of control‐Lyapunov function. With adjustment policy of quantization parameters, the quantized feedback hands‐off control can force the states of the nonlinear feedback system to the interior
Ankit Sachan +4 more
wiley +1 more source
Characterization of solutions of the discrete-time algebraic Riccati equation based on quadratic difference forms [PDF]
, 2006 This paper is concerned with a characterization of all symmetric solutions to the discrete-time algebraic Riccati equation (DARE). Dissipation theory and quadratic difference forms from the behavioral approach play a central role in this paper. Along the
Kojima, Chiaki +3 more
core +2 more sources
Shock and Vibration, Volume 2021, Issue 1, 2021., 2021 Buoy systems are an alternative for micropowering small devices in remote locations. Portal frames are very useful to harvest the energy of the waves into usable energy. Thus, using the current models for a portal frame in the literature and the spectrum of available energy in sea waves, a nonlinear mathematical model accounting for the coupling of a ...
Wagner B. Lenz +5 more
wiley +1 more source
SDRE- Suboptimal Approach for Robust Control of Multiple Arms Carrying a Load in Cooperation [PDF]
AUT Journal of Modeling and Simulation, 2023 In this paper, a new application of State- Dependent Riccati Equation (SDRE) is proposed as a framework to design a robust controller for the system of multiple cooperative arms with parametric uncertainties.
Neda Nasiri +2 more
doaj +1 more source
State-dependent Riccati equation feedback stabilization for nonlinear PDEs [PDF]
, 2022 The synthesis of suboptimal feedback laws for controlling nonlinear dynamics arising from semi-discretized PDEs is studied. An approach based on the State-dependent Riccati Equation (SDRE) is presented for 2 and ∞ control problems.
Alla, Alessandro +8 more
core +1 more source
A Nonlinear Optimal Guidance Law with Terminal Impact Angle Constraint [PDF]
International Journal of Computational Intelligence Systems, 2011 State-dependent Riccati equation (SDRE) techniques are rapidly emerging as general design methods for nonlinear controllers. A nonlinear optimal guidance law with impact angle constraint is derived for planar engagements to attack stationary targets. The
Haoping She +3 more
doaj +1 more source
State Dependent Riccati Equation Based Rotor-Side Converter Control for Doubly Fed Wind Generator
IEEE Access, 2018 This paper proposes a rotor-side converter (RSC) control of doubly fed induction generator (DFIG) through state-dependent Riccati equation (SDRE) approach to enhance the low voltage ride through (LVRT) ability.
Boyu Qin, Haoyuan Sun
doaj +1 more source
State dependent NGMV control of delayed piecewise affine systems [PDF]
, 2009 A Nonlinear Generalized Minimum Variance (NGMV) control algorithm is introduced for the control of delayed piecewise affine (PWA) systems which are an important subclass of hybrid systems.
Grimble, M.J. +5 more
core +4 more sources
Enlarging the Region of Attraction for Nonlinear Systems through the Sum-of-Squares Programming [PDF]
Control and Optimization in Applied Mathematics, 2019 In the present study, a novel methodology is developed to enlarge the Region of Attraction (ROA) at the point of equilibrium of an input-affine nonlinear control system.
Jahangir Alizadeh, Hamid Khaloozadeh
doaj +1 more source