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主动噪声
相关语句
  active noise
     The experimental identification of the acoustic channel in active noise control
     主动噪声控制声学通道的实验辨识
短句来源
     Research of engine noise cancellation in Active Noise Controlling System
     抵消发动机噪声的主动噪声控制系统研究
短句来源
     The Research on the Improved System for Active Noise Control Based on the FX-LMS Structure
     基于FX-LMS结构的主动噪声控制系统改进研究
短句来源
     The Application of Quantitative Feedback Theory in Design of Active Noise Controller
     定量反馈理论在主动噪声控制器设计中的应用
短句来源
     Wavelet transformation adaptive filter and its application in active noise control
     小波变换自适应滤波器及在主动噪声控制中的应用
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  “主动噪声”译为未确定词的双语例句
     Research on Self-adaptive Active Noice Control Based on DSP
     基于DSP的自适应主动噪声控制系统研究
短句来源
     Ground Tests on the Active Control of Propeller-Induced Cabin Noise
     螺浆飞机舱内主动噪声控制地面试验
短句来源
     With the detailed study in the influencing factors to the transmission property of the adaptive filter involved in this method, such as the step length μ of algorithm FXLMS, the adaptive filter length L, and the delay caused by the presence of secondary channel, the foundation on which further applicative research on the active control method to the narrow band noise is setup.
     通过窄带主动噪声控制FXLMS算法的步长μ、滤波器长度L、以及由于二次通道的存在而导致的滞后等因素对该方法传递特性的影响研究,进一步探讨窄带噪声控制技术为工程实际的应用研究奠定了基础。
短句来源
     An active control system is designed. Both the simulation and the test of fihered-X LMS and fihered-U LMS imply that,fihered-U LMS has a wider band of noise controlled.
     设计了自适应主动噪声控制系统,对滤波-X LMS与滤波-U LMS主动控制算法进行了仿真和实验,结果表明,两种算法均能有效地应用于噪声主动自适应控制中,滤波-U LMS具有更好的宽频降噪效果。
短句来源
     It work on the system based on the developed structure for improving the effect due to the second route and error route in the FX-LMS structure.
     针对FX-LMS结构中的辅助通道和误差通道,给主动噪声控制系统滤波性能带来的影响,对系统进行结构
短句来源
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  相似匹配句对
     ANC: A New Technique for Anti-noise
     噪声主动控制新技术
短句来源
     Evolvement and Trend of Active Noise Control
     噪声主动控制的进展及趋势
短句来源
     the art of initiative;
     主动的艺术 ;
短句来源
     WHITE NOISE
     白噪声
短句来源
     A recommended acceptable noise level can be determined from the teacheras response to the noise under investigation.
     噪声调查;
短句来源
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  active noise
Adaptive active noise and vibration control systems
      
Active noise cancellation of a spherical multipole source using a radially vibrating spherical baffled piston
      
This paper follows up on an earlier paper of the author [1] dealing with the issue of multi-scattering in a typical active noise control system.
      
This work concerns the effects of the presence of a neighboring wall on the performance of an active noise cancellation system when the dimension of sources is added to the analysis.
      
The differential problem of active noise shielding
      
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Boucher et al in 1991 stidied the effect of errors in the plant model on the stability of an active noise control system. For the multichannel case (for example ,aircraft noise aircraft control), the method of Ref.[4] can give a Probability of stability. In this paper we propose a different mpthod and, when extended by us to the multichannel case, it can indicate whether the system is stable or not by determining certain eigenvalucs of the system.This paper presents the basic steps, which are used for the...

Boucher et al in 1991 stidied the effect of errors in the plant model on the stability of an active noise control system. For the multichannel case (for example ,aircraft noise aircraft control), the method of Ref.[4] can give a Probability of stability. In this paper we propose a different mpthod and, when extended by us to the multichannel case, it can indicate whether the system is stable or not by determining certain eigenvalucs of the system.This paper presents the basic steps, which are used for the stability analysis of a single channel tem in this paper and for a multichannel system[5]. These basic steps are :1. Compensating filter needs by filtered-X LMSalgorithm is designed in such a way as to stabilize the system despite the exdistence of the acoustic channel. Errors of parameters in such a filter unavoidably exist and the question is whether such errous will cause instability.2. The errous of Compensating filter can be described as the uncertain parameters in state space equation which ,mathematically expressed ,is eq(13)3 Starting from eq (13) and introducing a rotation matrix,system into a discrete time invariant system, which is eq.(22).values.4. Eq .(22) can be used to determine the needed eigenvalues

提出主动噪声控制系统稳定性分析的一种新方法.控制器采用自适应陷波器滤波X—LMS算法,为改善系统的稳定鲁棒性和加速算法的收敛,利用声学通道的相位特性设计了补偿滤波器.通过建立状态空间模型对系统进行性能分析,经过旋转变换,将时变系统转化为等价的线性时不变系统,从而可以便利地利用控制理论进行稳定性分析

This paper delivers a system identification algorithm for finding the system function form primary sensor to secondary source in active noise control system, PSI in short. Based on the frequency domain least squares system identification algorithm (IFLS),the algorithm identifies the transfer function H of primary sensor to error sensor first using IFLS according to sampled data, secondly, identifies the function H2 of secondary soures to error sensor using IFLS according to sampled data, then simulatively stimulates...

This paper delivers a system identification algorithm for finding the system function form primary sensor to secondary source in active noise control system, PSI in short. Based on the frequency domain least squares system identification algorithm (IFLS),the algorithm identifies the transfer function H of primary sensor to error sensor first using IFLS according to sampled data, secondly, identifies the function H2 of secondary soures to error sensor using IFLS according to sampled data, then simulatively stimulates all models form primary sensor to secondary source with white noise, again using IFLS to identify the transfer function H1 of primary sensor to secondary source, and let them satisfy the following relationl H= -H1H2.

提出了一种应用于主动噪声抵消系统中求解初级传感器到次级声源之间系统函数的辨识算法,简称PSI.算法以频域最小二乘系统辨识算法(IFLS)为核心,首先根据实测数据用IFLS算法辨识出初级传感器到误差传感器之间的系统函数H,再根据实测数据用IFLS算法辨识出次级声源到误差传感器之间的系统函数H2;然后用模拟激励方法通过白噪声间接激发初级传感器到次级声源之间的各种模态;再次利用IFLS算法辨识初级传感器到次级声源之间的系统函数H1,使之满足H=-H1H2关系.

The acoustical behavior of an automobile cabin was analyzed. The theoretical model of the active noise control system was built by use of transfer function method. On this basis, an active noise control system was designed, then its hardware and software were developed and tested to control stable pure noise in this enclosure. The test was repeatedly carried with pure noises at variant frequencies. The results of the test show that the meaning reduction over the measured plane is about 10 dB for the noise at...

The acoustical behavior of an automobile cabin was analyzed. The theoretical model of the active noise control system was built by use of transfer function method. On this basis, an active noise control system was designed, then its hardware and software were developed and tested to control stable pure noise in this enclosure. The test was repeatedly carried with pure noises at variant frequencies. The results of the test show that the meaning reduction over the measured plane is about 10 dB for the noise at 139 Hz and 5 dB at 150 Hz. The noise with frequencies over 200 Hz was attenuated as well in some certain regions. At last, the rule of the monitoring microphone distribution was discussed to gain a good control result.

用传递函数法建立了模拟汽车车厢内声学特征的主动噪声控制理论模型。开发完成了封闭空间主动噪声控制试验系统的硬件和软件。用几种纯音信号对模拟车厢进行了空间主动降噪试验。结果表明,对于139Hz的纯音噪声信号,在封闭空间内取一个测量面,其上的噪声平均降低了10dB,而对于150Hz的纯音噪声信号则平均降低了5dB,高于200Hz的几个纯音噪声信号则可以得到较好的区域降噪。证实了车内有源噪声控制的可行性。

 
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