scholarly journals A STUDY ON VERTICAL MICRO-VIBRATION CONTROL OF A REDUCED BEAM MODEL USING A FILM TYPE PIEZO-ELECTRIC DEVICE

2013 ◽  
Vol 78 (684) ◽  
pp. 281-287 ◽  
Author(s):  
Hitoshi MATSUSHITA ◽  
Hirokazu YOSHIOKA ◽  
Yoshinori TAKAHASHI
Keyword(s):  
Vibration Control ◽  
Beam Model ◽  
Film Type ◽  
Electric Device ◽  
Micro Vibration ◽  
Piezo Electric

The Use of Optimally Shaped Piezo-electric Film Sensors in the Active Control of Free Field Structural Radiation, Part 1: Feedforward Control

1995 ◽  
Vol 117 (3A) ◽  
pp. 311-322 ◽  
Author(s):  
S. D. Snyder ◽  
N. Tanaka ◽  
Y. Kikushima
Keyword(s):  
Vibration Control ◽  
Polymer Film ◽  
Active Control ◽  
Computer Simulations ◽  
Basis Function ◽  
Feedforward Control ◽  
Free Field ◽  
Acoustic Power ◽  
Low Frequencies ◽  
Piezo Electric

Feedforward active control of free field structural radiation using vibration control sources and piezo-electric polymer film error sensors is considered. The problem of what should be measured by the sensors is first examined, where it is shown that orthonormal decomposition of the equation governing the acoustic power output of the structure will define the optimal quantities, which are described using the in vacuo structural modes as a basis function. Computer simulations show that by using only a few of these quantities as error signals, practically the maximum levels of acoustic power attenuation can be obtained at low frequencies. Tonal and broadband experimental results are presented using the shaped piezo-electric polymer film sensors which demonstrate the effectiveness of the described approach.

scholarly journals Fast-acting electro-hydraulic digital valve by making use of a multilayered piezo-electric device (PZT).

1989 ◽  
Vol 20 (7) ◽  
pp. 604-610
Author(s):  
Shinichi YOKOTA ◽  
Kenichirou HIRAMOTO ◽  
Masaaki UENISHI
Keyword(s):  
Electric Device ◽  
Fast Acting ◽  
Piezo Electric

scholarly journals Research on micro-vibration control and testing of FY-4 meteorological satellite

2018 ◽  
Vol 49 (2) ◽  
pp. 024508
Author(s):  
Guang MENG ◽  
YaoHai DONG ◽  
XuBin ZHOU ◽  
JunFeng SHEN ◽  
XingTian LIU
Keyword(s):  
Vibration Control ◽  
Micro Vibration ◽  
Meteorological Satellite

scholarly journals Optimal vibration control of an isotropic beam through boundary conditions

2021 ◽  
Vol 25 (Spec. issue 1) ◽  
pp. 111-120
Author(s):  
Seda Goktepe Korpeoglu
Keyword(s):  
Boundary Conditions ◽  
Control Problem ◽  
Vibration Control ◽  
Control Function ◽  
Optimal Solution ◽  
Performance Measure ◽  
Beam Model ◽  
Control Effort ◽  
Isotropic Structure ◽  
Computer Codes

An isotropic structure modelled as a Timoshenko beam is considered for the optimal vibration control problem. The beam model to be controlled is described by a distributed parameter system with the selection of Timoshenko?s shear correction factor. Control of the vibrations is achieved through a function placed on the boundary conditions. The performance index which seeks to be minimized indicates that the goal is to minimize the magnitude of performance measure without consuming control effort in large quantities. It is shown how to derive the optimal control function using Pontryagin?s principle that turns the control problem into solving optimality system of PDE with terminal values. Wellposedness of the optimal solution on the control set is presented and controllability of the problem is analyzed. Numerical simulations are given in terms of computer codes produced in MATLAB? in the forms of graphical and tables in order to show the applicability and effectiveness of the control acting on the boundary conditions.

Sign in / Sign up

Export Citation Format

Share Document