Journal ArticleDOI
Experimental demonstration of a band-limited actuator/sensor selection strategy for structural acoustic control
Robert L. Clark,David E. Cox +1 more
TLDR
In this article, a band-limited method of selecting actuators and sensors for structural acoustic control is reviewed, and experimental results are presented to demonstrate the approach, which is based upon the decomposition of the Hankel singular values of a system model in terms of individual sensor and actuator configurations for lightly damped structures.Abstract:
A band-limited method of selecting actuators and sensors for structural acoustic control is reviewed, and experimental results are presented to demonstrate the approach. The selection methodology is based upon the decomposition of the Hankel singular values of a system model in terms of individual sensor and actuator configurations for lightly damped structures. The technique selects sensor and actuator combinations which couple well to structural modes that radiate efficiently. However, it rejects sensor and actuator combinations which couple well to modes that are inefficient acoustic radiators or are outside of the desired bandwidth of control. Selecting transducer combinations which filter modes outside of the desired bandwidth serves to minimize the potential for spillover and instability associated with unmodeled or poorly modeled dynamics. The approach is computationally efficient since it is based upon open-loop dynamics and does not require iterative nonlinear optimization.read more
Citations
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Journal ArticleDOI
Analysis of Nonlinear Dynamics in a Linear Compressor.
Gyu-Sang Choe,Kwang-Joon Kim +1 more
TL;DR: In this paper, the gas force is represented in terms of equivalent stiffness and equivalent damping by employing the describing function approach so that analysis of steady state response characteristics and jump phenomenon can be done in a way simpler than by the full nonlinear model.
Journal ArticleDOI
Piezoelectric Sensor and Actuator Spatial Design for Shape Control of Piezolaminated Plates
TL;DR: In this article, a gradientless shape design procedure based on the residual voltages is developed to minimize the quadratic measure of global displacement residual error between the desired and the current structural configuration.
Journal ArticleDOI
Smart panels with velocity feedback control systems using triangularly shaped strain actuators.
TL;DR: This study shows that the new arrangement with triangularly shaped actuators can achieve better control than the corresponding system using square actuators.
Journal ArticleDOI
Decentralized control of sound radiation using iterative loop recovery
TL;DR: Simulations demonstrate that the iterative approach can achieve significant reductions in radiated sound power from the stiffened panel without destabilizing neighboring control units.
Journal ArticleDOI
Robust Feedback Control of a Baffled Plate via Open-Loop Optimization
TL;DR: In this article, a SISO control system is built by using a volume displacement sensor and a set of actuators driven in parallel with a single amplifier, optimized to achieve an open-loop transfer function which exhibits alternating poles and zeros.
References
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Journal ArticleDOI
An eigensystem realization algorithm for modal parameter identification and model reduction
Jer-Nan Juang,Richard S. Pappa +1 more
TL;DR: A new approach is introduced in conjunction with the singular value decomposition technique to derive the basic formulation of minimum order realization which is an extended version of the Ho-Kalman algorithm.
Journal ArticleDOI
Radiation Resistance of a Rectangular Panel
TL;DR: In this article, the authors derived the radiation resistance of a finite rectangular panel from the total energy radiated to the far field, assuming that the panel is assumed to be supported in an infinite baffle.
Journal ArticleDOI
Active control of sound radiation using volume velocity cancellation
M. E. Johnson,Stephen J. Elliott +1 more
TL;DR: In this article, the effects of minimizing the sound power radiated by the panel and canceling the net volume velocity of the panel are compared not only in terms of the reduction in sound radiation but also in the change in the space average mean-squared velocity of a panel and its surface pressure at its surface, and it is shown that volume velocity cancellation gives similar reductions in transmitted sound power to the minimization of sound power radiation up to frequencies at which the size of the plate is about half an acoustic wavelength.
Journal ArticleDOI
Optimal placement of piezoelectric actuators and polyvinylidene fluoride error sensors in active structural acoustic control approaches
Robert L. Clark,Chris R. Fuller +1 more
TL;DR: Results from this study indicate that optimization of control actuators and error sensors provided a method for realizing ‘‘smart’’ structures for active structural acoustic control (ASAC), rivaling in importance the performance increase gain when acoustic control is achieved with microphone error sensors and multiple control actuator.
Journal ArticleDOI
Active suppression of acoustic radiation from impulsively excited structures
TL;DR: In this paper, a model-based method for actively suppressing transient structural acoustic radiation that can also be applied to steady, narrow, or broadband disturbances is presented. But the work is constrained by the assumption that the far field pressure cannot be directly measured.