Results 161 to 170 of about 6,111 (200)
Some of the next articles are maybe not open access.
Global adaptive output feedback MRAC
Proceedings of the 48h IEEE Conference on Decision and Control (CDC) held jointly with 2009 28th Chinese Control Conference, 2009A robust adaptive output feedback (OFB) dynamic inversion control strategy is presented that achieves global asymptotic tracking of a reference model. The considered system contains linearly parameterizable uncertainty in the state and input matrices. The dynamic model also includes an unknown, nonlinear disturbance, which does not satisfy the linear ...
William MacKunis +3 more
openaire +2 more sources
MRAC FOR SYSTEMS WITH SINUSOIDAL PARAMETERS
International Journal of Adaptive Control and Signal Processing, 1996Present adaptive control schemes are formulated to estimate constant parameters. In certain circumstances, however, time-varying parameters may need to be estimated. This paper presents a method for estimating parameters that vary sinusoidally based upon the passivity/hyperstability formulation.
openaire +2 more sources
Gain margins of multivariable MRAC systems
2008 47th IEEE Conference on Decision and Control, 2008This paper studies the gain margins (GM) of multivariable model reference adaptive control (MRAC) systems: the parameter range of a control gain matrix in a designed MRAC system for maintaining the desired closed-loop signal boundedness and asymptotic output tracking.
Qian Sang, Gang Tao
openaire +1 more source
Proceedings of the 1997 American Control Conference (Cat. No.97CH36041), 1997
A standard model reference adaptive control (MRAC) scheme is inherently robust with respect to L/sup /spl infin///spl cap/L/sup 2/ disturbances in the sense that all closed-loop signals are bounded and the tracking error is in L/sup /spl infin///spl cap/L/sup 2/. A MRAC scheme with a new adaptive law is inherently robust with respect to disturbances in
openaire +1 more source
A standard model reference adaptive control (MRAC) scheme is inherently robust with respect to L/sup /spl infin///spl cap/L/sup 2/ disturbances in the sense that all closed-loop signals are bounded and the tracking error is in L/sup /spl infin///spl cap/L/sup 2/. A MRAC scheme with a new adaptive law is inherently robust with respect to disturbances in
openaire +1 more source
Multivariable MRAC for aircraft with abrupt damages
2008 American Control Conference, 2008This paper addresses the compensation of aircraft damages using the direct adaptive control approach. The dynamical modeling of aircraft with damages is first introduced, which demonstrates the complex dynamics when asymmetric mass distribution occurs as the result of damages.
Yu Liu 0062, Gang Tao
openaire +2 more sources
Adaptation rates for MRAC systems
International Journal of Control, 1989Abstract A method for predicting the adaptation rate of a single-input, hyperstability-based, MRAC system is developed. Assuming a slowly changing input and output, this rate follows well-defined root loci. A straightforward method for choosing adaptation gains results. The derived theory was applied to a laboratory experiment which involved a DC motor
JACOB S. GLOWER, ROBERT E. FENTON
openaire +1 more source
MRAC with reduced state information
IFAC Proceedings Volumes, 2004Abstract Direct adaptive control algorithms using state variables in control structure are known for their good adaptation capability and tracking performances that result from the fact that they use plant state variables in control law as well as in adaptation law.
Michal Gonos +2 more
openaire +1 more source
PID and MRAC control of a Quadrotor
2019 3rd International Conference on Recent Developments in Control, Automation & Power Engineering (RDCAPE), 2019A Quadrotor is an Unmanned Aerial Vehicle (UAV) which has four rotors. It is a non-linear multivariable system which is highly underactuated. Voltage-based approach using Newton-Euler technique is used to derive the quadrotor's equations-of-motion. These equations are then used to develop a Simulink model and the output responses for roll, pitch and ...
Ritika Thusoo +2 more
openaire +1 more source
MRAC for A Launch Vehicle Actuation System
2015Actuators are used to provide Thrust Vector Control (TVC) for lifting the launch vehicle and its payload to reach its space orbits. The TVC comprises actuation and power components for controlling the engines direction and thrust to steer the vehicle. Here the actuator considered is a linear Electromechanical Actuator (EMA) system.
Elizabath Rajan +2 more
openaire +2 more sources
A Novel MRAC of Induction Motor
IEEE 36th Conference on Power Electronics Specialists, 2005., 2006MRAC (model reference adaptive control ) is one effective scheme for parameter identification in a flux field-oriented control system of induction motors. But most of the existent available reference models used in this field are based on the static models of induction motors, and so the transient performances are always unsatisfactory.
null Yue Wang +4 more
openaire +1 more source