Active structural acoustic control of helicopter interior multifrequency noise using input-output-based hybrid control

Ma, Xiao-Dong; Yang, Lu; Wang, Fengjiao

doi:10.1016/j.jsv.2017.05.051

Cited by 21 publications

(11 citation statements)

References 16 publications

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“…In the past decade, the ASAC techniques have been extensively used in diverse fields (helicopters [322,323], vehicles [324], etc [325,326,327]). In [328], an ASAC approach was proposed for repetitive impact noises.…”

Section: Fullermentioning

confidence: 99%

A survey on active noise control in the past decade—Part I: Linear systems

et al. 2021

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Active noise control (ANC) is an effective way for reducing the noise level in electroacoustic or electromechanical systems. Since its first introduction in 1936, this approach has been greatly developed. This paper focuses on discussing the development of ANC techniques over the past decade. Linear ANC algorithms, including the celebrated filtered-x least-mean-square (FxLMS)based algorithms and distributed ANC algorithms, are investigated and evaluated. Nonlinear ANC (NLANC) techniques, such as functional link artificial neural network (FLANN)-based algorithms, are pursued in Part II. Furthermore, some novel methods and applications of ANC emerging in the past decade are summarized. Finally, future research challenges regarding the ANC technique are discussed.

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Section: Fullermentioning

confidence: 99%

A survey on active noise control in the past decade—Part I: Linear systems

et al. 2021

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“…Uz W 1 e −ikz W 2 e −ikl−z (5) in which W 1 and W 2 are the constants determined by the boundary conditions of the layer, and l is the length of the layer. Based on the dynamic shape function, the dynamic stiffness matrix of the layer is obtained as [35]…”

Section: Governing Equation For Longitudinal Wave Propagationmentioning

confidence: 99%

“…Currently, there are two main methods to address this problem. One way is to actively isolate the gear meshing vibration using actuators installed on the support struts [1][2][3][4][5] or the panel nearby the mounting points of the struts [6][7][8] as secondary forces. The active method can manage multiple-frequency components effectively.…”

mentioning

confidence: 99%

Design of Near-Periodic Struts for Helicopter Gearbox Vibration Isolation Using Multicell Optimization

Wang

Torbati

et al. 2019

AIAA Journal

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The structure-borne tones generated by the main gearbox are the primary components of helicopter interior noise. Recently, a kind of periodic strut has been designed to isolate the multispectral vibration from transmitting to the cabin, for their specific stop-band characteristics. Using multicell optimization, the disorders are designed into the strut to obtain better vibration and noise reduction effect. The dynamic model of the periodic strut is firstly established by combining the spectral element method and the transfer matrix method. On this basis, a multi-objective multivariable genetic algorithm is adopted to optimize the geometry by taking the maximum attenuation as the performance objective function. Then, a near-periodic structure is achieved. Compared with the perfect periodic strut, the optimal one has a much wider and deeper stop band, which is critical for a better vibration and noise attenuation effect. In addition, a method is presented to analyze the wave propagation to explore the increase of width and depth of the bandgaps more closely. Experimental investigations are then carried out on a pair of original and optimal struts to validate the improvements. It is shown that 26.22% more attenuation is achieved through this structural optimization.

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“…However, because the piezoelectric stack can not bear shear force and tensile force, the integrated piezo longitudinal actuator is used to replace the piezoelectric 1 National Key Laboratory of Rotorcraft Aeromechanics, Nanjing University of Aeronautics and Astronautics, Nanjing, China stack actuator in the vibration control research (Ma et al, 2017;Meng et al, 2020;Simo˜es et al, 2007). The Pst150/10/100VS15 integrated piezo longitudinal actuator made by CoreMorrow company and its mechanical structure diagram are shown in Figure 2.…”

Section: Introductionmentioning

confidence: 99%

Transfer matrix model and experimental validation for the integrated piezo longitudinal actuators

Yue

Yang

Chong

et al. 2022

Journal of Intelligent Material Systems and Structures

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The housing and pre-compressed spring of the integrated piezo longitudinal actuator can protect the piezoelectric stack from shear stress and tensile stress. In this paper, the limitations of this actuator model in existing vibration control projects are pointed out. An electromechanical coupling dynamic model in the transfer matrix form is established for the longitudinal vibration of the integrated piezo longitudinal actuator. The model includes all parameters of the integrated piezo longitudinal actuator: force and velocity at both ends, material and structural parameters, voltage and current, which is suitable for any mechanical and electrical boundary conditions; The transfer matrix method has a simple structure and clear physical definition, which is convenient to be applied to the vibration control system. This model is verified by the finite element software and experiments. In the experimental verification, an electromechanical coupling dynamic experiment system of the integrated piezo longitudinal actuator is established. The accuracy of this model is verified by comparing the frequency domain dynamic response of various parameters in the simulation and experiments. The integrated piezo longitudinal actuator model provides a wide range of possibilities for model-based controller design, active and semi-active control, electric power estimation, and optimal vibration isolation performance estimation.

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Active structural acoustic control of helicopter interior multifrequency noise using input-output-based hybrid control

Cited by 21 publications

References 16 publications

A survey on active noise control in the past decade—Part I: Linear systems

A survey on active noise control in the past decade—Part I: Linear systems

Design of Near-Periodic Struts for Helicopter Gearbox Vibration Isolation Using Multicell Optimization

Transfer matrix model and experimental validation for the integrated piezo longitudinal actuators

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