scholarly journals A Study on Vertical and Horizontal Micro-vibration Control of a Reduced Frame Model using Film Type Piezo-electric Devices

2013 ◽  
Vol 78 (692) ◽  
pp. 1725-1731 ◽  
Author(s):  
Hitoshi MATSUSHITA ◽  
Hirokazu YOSHIOKA ◽  
Yoshinori TAKAHASHI
Keyword(s):  
Vibration Control ◽  
Frame Model ◽  
Film Type ◽  
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 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 Micro-Vibration Control by Active Magnetic Levitation System.

2002 ◽  
Vol 68 (669) ◽  
pp. 1405-1413 ◽  
Author(s):  
Katsuhide WATANABE ◽  
Yoichi KANEMITSU ◽  
Shinji HARA ◽  
Takahide HAGA
Keyword(s):  
Vibration Control ◽  
Magnetic Levitation ◽  
Levitation System ◽  
Magnetic Levitation System ◽  
Micro Vibration

scholarly journals Vibration Control Of Steel Frames Using Magnetorheological Dampers: A New Control Algorithm.

2019 ◽  
Vol 1 (1) ◽  
pp. 62-66
Author(s):  
Arunvivek G.K. ◽  
Saravanakumar R
Keyword(s):  
Vibration Control ◽  
Base Isolation ◽  
Structural Characteristics ◽  
Steel Frame ◽  
Design Strategies ◽  
Damping Force ◽  
Isolation System ◽  
Frame Model ◽  
Force Transducers ◽  
Structural Applications

Control technologies application to steel structure is mainly anticipated to enhance the structural performance against natural hazards. In particular smart base isolation system connected with semi-active isolator at the base with controllable semi devices gaining impulse for its efficiency and economic reasons. Generally the development of control design strategies through system dynamics concept had not been considered entirely for structural applications. Structural characteristics which help to divulge structural properties, hitherto flout by civil engineering circle are assimilated with control techniques to construct indices in modal and nodal coordinates for the endurance of the control action to utilize their fullest capabilities. In this study, an isolated 3D steel frame model is developed.  Magneto-Rheological dampers are fixed with 3D steel frame model which act as a smart control device. Besides, Force transducers and Piezoresistive Actuator in tandem with Deltatron conditioning amplifier are also used. Presently many techniques are employed for the optimum placement of actuators and sensors in vibration control systems. The concept of controllability-observability is used in these methods. The specific relationship between the vibration modes and controllability-observability simplifies this approach. This study envisaged the compatibility of force transducers along with triaxial and uniaxial accelerometers fixed at various trial spots on the model structure to quantify the damping force and absolute accelerations of the structure and the dampers individually, positioned in the system, against the excitation of the structure.

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