Laser beam pointing and stabilization by fractional-order PID control: Tuning rule and experiments

Alalwan, Asem; Guo, Xingang; Ndoye, Ibrahima; Laleg‐Kirati, Taous‐Meriem

doi:10.1109/ccta.2017.8062699

Cited by 6 publications

(4 citation statements)

References 22 publications

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“…The classical control tools as PID controllers [1], [7], [8] can maximize the received laser beam signal by a photodiode sensor using an actuator and stabilize the beam at the desired angle. Many studies have demonstrated that PID controllers were proved to be good control techniques for stabilizing the laser beam with minimal settling time but these classical control algorithms fail to get a good performance, specifically under vibration scenarios due to active disturbances.…”

Section: Introductionmentioning

confidence: 99%

Tracking Model Predictive Control Paradigm for Underwater Optical Communication

Alalwan

Albalawi

Laleg‐Kirati

2021

IEEE Open J. Commun. Soc.

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High-precision positioning of two underwater mobile robots is investigated in this work. To achieve good performance in underwater communication, control algorithms are implemented to maintain the position of the receiver robot aligned with that of the transmitter in the presence of measurement noise and process uncertainty. Although recent research works have successfully integrated control algorithms with Extended Kalman Filter (EKF) estimator to track the desired position of the transmitter, other aspects besides the convergence to the equilibrium point such as operational constraints and input constraints were not taken into account within these controllers. Such inability of these control algorithms may degrade the performance of the controlled process. Motivated by the above considerations, a tracking Model Predictive Control (MPC) with an EKF-based estimator is developed to both estimate the process states online and drive the actual system to the desired equilibrium point while meeting input and state constraints. The closed-loop stability and the recursive feasibility of the proposed tracking MPC scheme are rigorously proved. To demonstrate the applicability of the proposed control design, the performance of the tracking MPC with that of the conventional Proportional (P), Proportional Integral Derivative (PID), and Linear Quadratic Regulator (LQR) controllers are compared.

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Section: Introductionmentioning

confidence: 99%

Tracking Model Predictive Control Paradigm for Underwater Optical Communication

Alalwan

Albalawi

Laleg‐Kirati

2021

IEEE Open J. Commun. Soc.

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“…Así entonces, midiendo un pequeño porcentaje del haz, dicho espejo es capaz de estabilizar el movimiento del haz mediante la retroalimentación de la información de posición (Quanser, 2010;Landolsi et al, 2011). En los últimos años, se han diseñado y evaluado diversos enfoques de control para tales sistemas, por ejemplo, control adaptativo (Kim et al, 2004), (Pérez-Arancibia et al, 2006), método de ponderación de frecuencia (Pérez-Arancibia et al, 2009), controladores basados en PID (Landolsi et al, 2011), control PID de orden fraccionario (Al-Alwan et al, 2017), enfoques H∞ (Martinez et al, 2009), (Alizadegan et al, 2018), control resonante integral (Yue and Song, 2015); entre otros.…”

Section: Introductionunclassified

Sistema de control de posición mediante rechazo activo de perturbaciones para sistemas ópticos láser

Guerrero-Castellanos

González-Romeo

2021

Rev. iberoam. autom. inform. ind.

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En este trabajo se presenta de manera pragmática un esquema de control por rechazo activo a perturbaciones para un sistema de direccionamiento y estabilización de haz láser. Primeramente es diseñado un Observador Lineal de Estado Extendido, el cual permite estimar las perturbaciones externas e incertidumbres en el modelo, así como la velocidad de desplazamiento transversal del haz. Posteriormente, se propone una ley de control, la cual contiene términos de retroalimentación y precompensación, permitiendo realizar tareas de regulación y seguimiento. Mediante un análisis de estabilidad en el sentido entrada a estado, se muestra que el sistema en lazo cerrado, planta-observador-controlador, es robustamente estable, cuando la entrada es la perturbación total y el estado es el error de posición del haz. Dicho análisis presenta nuevas perspectivas en una técnica ahora madura. Los resultados experimentales muestran el funcionamiento del esquema de control y mediante la norma L2 y la Integral del Error Cuadrático se mide el desempeño en lazo cerrado, el cual es comparado con tres controles generalmente usados en este tipo de sistemas: PID, control por retroalimentación de estados con observador y regulador lineal cuadrático gaussiano.

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“…PID controllers with a beam-stabilized optical switch have been proposed in [2], [12] to stabilize a beam at a desired angle and maximize the optical power detected by a photodiode using a voice-coil motor actuator. Recently, a Fractional-Order PID (FOPID) controller has been implemented on a laser beam positioning system [13] and has been compared to classical PID controllers. This study has shown that the FOPID controller provides excellent stabilization properties with minimal switching time and good robustness with respect to moderate disturbances.…”

Section: Introductionmentioning

confidence: 99%