Panel flutter suppression with an optimal controller based on the nonlinear model using piezoelectric materials

2005 ◽  
Vol 68 (3) ◽  
pp. 371-379 ◽  
Author(s):  
Seong Hwan Moon ◽  
Joon Seok Hwang
Keyword(s):  
Nonlinear Model ◽  
Piezoelectric Materials ◽  
Optimal Controller ◽  
Panel Flutter ◽  
Flutter Suppression

A Method of Panel Flutter Suppression and Elimination for Aeroelastic Structures in Supersonic Airflow

2018 ◽  
Vol 140 (6) ◽  
Author(s):  
Zhi-Guang Song ◽  
Tian-Zhi Yang ◽  
Feng-Ming Li ◽  
Erasmo Carrera ◽  
Peter Hagedorn
Keyword(s):  
Natural Frequency ◽  
Active Control ◽  
Stiffness Matrix ◽  
Control Method ◽  
Plate Theory ◽  
Piezoelectric Materials ◽  
Panel Flutter ◽  
Structural System ◽  
Flutter Suppression ◽  
Control Forces

In traditional active flutter control, piezoelectric materials are used to increase the stiffness of the aeroelastic structure by providing an active stiffness, and usually the active stiffness matrix is symmetric. That is to say that the active stiffness not only cannot offset the influence of the aerodynamic stiffness which is an asymmetric matrix, but also will affect the natural frequency of the structural system. In other words, by traditional active flutter control method, the flutter bound can just be moved backward but cannot be eliminated. In this investigation, a new active flutter control method which can suppress the flutter effectively and without affecting the natural frequency of the structural system is proposed by exerting active control forces on some discrete points of the structure. In the structural modeling, the Kirchhoff plate theory and supersonic piston theory are applied. From the numerical results, it can be noted that the present control method is effective on the flutter suppression, and the control effects will be better if more active control forces are exerted. After being controlled by the present control method, the natural frequency of the structure remains unchanged.

scholarly journals Modeling and Optimal Controller Based on Disturbance Detector for the Stabilization of a Three-link Inverted Pendulum Mobile Robot

Electronics ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 1821
Author(s):  
Luis Alfonso Jordán-Martínez ◽  
Maricela Guadalupe Figueroa-García ◽  
José Humberto Pérez-Cruz
Keyword(s):  
Mathematical Model ◽  
Mobile Robot ◽  
Nonlinear Model ◽  
Direct Current ◽  
Inverted Pendulum ◽  
Experimental Tests ◽  
Optimal Controller ◽  
Stabilization Problem ◽  
Lagrange Equations ◽  
Direct Measurements

This work presents the realization of a complicated stabilization problem for a three inverted pendulum links-based mobile robot. The actuators of the mobile robot are direct current motors that have tachometer couplings to measure both the position and speed of the wheels and links. Using direct measurements under load and analyzing the deceleration curve, the motor parameters are determined experimentally. A mathematical model of the robot is obtained via the Euler–Lagrange equations. Next, the nonlinear model is linearized and discretized. Based on this discrete LTI model, an optimal controller is designed. The states and disturbances are estimated using a robust detector. Both the controller and detector are implemented in the robot processor. Numerical simulations and experimental tests show a good performance of the controller despite the presence of disturbances.

Panel flutter suppression using adaptive material actuators

1994 ◽  
Vol 31 (1) ◽  
pp. 213-222 ◽  
Author(s):  
R. C. Scott ◽  
T. A. Weisshaar
Keyword(s):  
Panel Flutter ◽  
Flutter Suppression

Active control of composite panel flutter using piezoelectric materials

1993 ◽  
Author(s):  
Derek A. Paige ◽  
Robert C. Scott ◽  
Terrence A. Weisshaar
Keyword(s):  
Active Control ◽  
Piezoelectric Materials ◽  
Composite Panel ◽  
Panel Flutter

A Feedback Linearization Approach for Panel Flutter Suppression With Piezoelectric Actuation

2010 ◽  
Vol 6 (3) ◽  
Author(s):  
Oluseyi O. Onawola ◽  
S. C. Sinha
Keyword(s):  
Feedback Control ◽  
Electric Fields ◽  
Feedback Linearization ◽  
Plate Theory ◽  
Nonlinear Partial Differential Equation ◽  
Control Panel ◽  
Panel Flutter ◽  
Piezoelectric Actuation ◽  
Nonlinear Feedback ◽  
Flutter Suppression

Panel flutter suppression by exact state transformations and feedback control using piezoelectric actuation is presented. A nonlinear control system is designed for a simply supported rectangular panel with bonded piezoelectric layers based on the von Kármán large-deflection plate theory. The governing nonlinear partial differential equation for the panel is reduced to a set of ordinary differential equations using a two mode approximation. Distributed piezoelectric actuators and sensors connected to processing networks are used as modal actuators and sensors to actively control panel vibrations. The control inputs are given by the electric fields required to drive the actuators based on piezoelectric actuation. Nonlinear feedback control laws are formulated through a transformation of the discretized nonlinear system into an equivalent controllable linear system. The simulated results show that the resulting closed-loop system based on feedback linearized controllers effectively suppress panel flutter limit-cycle motions.

Supersonic Nonlinear Panel Flutter Suppression Using Shape Memory Alloys

2007 ◽  
Vol 44 (4) ◽  
pp. 1139-1149 ◽  
Author(s):  
Xinyun Guo ◽  
Yiu-Yin Lee ◽  
Chuh Mei
Keyword(s):  
Shape Memory Alloys ◽  
Shape Memory ◽  
Panel Flutter ◽  
Flutter Suppression ◽  
Nonlinear Panel Flutter
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