Modal control for a class of multi-axis vibration table

2004 ◽  
Author(s):  
A.R. Plummer
Keyword(s):  
Modal Control

Active Modal Control Applying in a 2DOF Structure

2019 ◽  
Author(s):  
Edson Hideki Koroishi ◽  
Joana Pereira Repinaldo ◽  
Fabian Andres Lara-Molina ◽  
Aldemir Ap Cavalini Jr ◽  
Valder Steffen Jr
Keyword(s):  
Modal Control

Simulation of modal control liquid crystal lens with step sheet resistance distribution

2020 ◽  
Vol 35 (9) ◽  
pp. 908-913
Author(s):  
Wei-xing GONG ◽  
◽  
Tao YU ◽  
Wei-zhi WANG ◽  
Jia-lun ZHANG ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Sheet Resistance ◽  
Modal Control ◽  
Liquid Crystal Lens

WPT-based modal control on distributed structures with MRF-04K damper

2011 ◽  
Vol 17 (6) ◽  
pp. 397-403
Author(s):  
Wei Lin ◽  
Zhongxian Li ◽  
Genming Zhang ◽  
Pengyun Huang
Keyword(s):  
Modal Control ◽  
Distributed Structures

Mode Oriented Design Viewpoint for Linear, Lumped-Parameter Multivariable Control Systems

1968 ◽  
Vol 90 (2) ◽  
pp. 222-230 ◽  
Author(s):  
Y. Takahashi ◽  
H. Thal-Larsen ◽  
E. Goldenberg ◽  
W. V. Loscutoff ◽  
P. R. Ragetly
Keyword(s):  
Control Systems ◽  
Multivariable Control ◽  
Multivariable Systems ◽  
Modal Control ◽  
Multivariable Control Systems ◽  
Lumped Parameter

There are multivariable systems which have free motions dominated by a limited number of clearly separable modes. In some cases it is possible to specifically control these modes, thereby improving overall control of the system. This paper is a discussion of when and how modal control may be applied.

Active Noise Control Using Phase-Compensated, Damped Resonant Filters

2005 ◽  
Vol 128 (2) ◽  
pp. 148-155 ◽  
Author(s):  
Jesse B. Bisnette ◽  
Adam K. Smith ◽  
Jeffrey S. Vipperman ◽  
Daniel D. Budny
Keyword(s):  
Noise Control ◽  
Control Method ◽  
Active Noise Control ◽  
Control Device ◽  
Modal Control ◽  
Pass Filter ◽  
Acoustic Transducers ◽  
Active Noise ◽  
The Impact ◽  
Resonant Filters

An active noise control device called active noise absorber or ANA, which is based upon damped, resonant filters is developed and demonstrated. It is similar to structural positive position feedback (PPF) control, with two exceptions: (1) Acoustic transducers (microphone and speaker) cannot be truly collocated, and (2) the acoustic actuator (loudspeaker) has significant dynamics. The speaker dynamics can affect performance and stability and must be compensated. While acoustic modal control approaches are typically not sought, there are a number of applications where controlling a few room modes is adequate. A model of a duct with speakers at each end is developed and used to demonstrate the control method, including the impact of the speaker dynamics. An all-pass filter is used to provide phase compensation and improve controller performance and permits the control of nonminimum phase plants. A companion experimental study validated the simulation results and demonstrated nearly 8 dB of control in the first duct mode. A multi-modal control example was also demonstrated producing an average of 3 dB of control in the first four duct modes.

scholarly journals Modal control of vibration in rotating machines and other generally damped systems

2007 ◽  
Vol 302 (1-2) ◽  
pp. 104-116 ◽  
Author(s):  
P.R. Houlston ◽  
S.D. Garvey ◽  
A.A. Popov
Keyword(s):  
Modal Control ◽  
Rotating Machines ◽  
Damped Systems
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