The reduction of exhaust system noise is the key to the reduction of automobile noise. At present, the main method to reduce exhaust noise is by setting muffler in automobile exhaust system.
减小排气噪声是降低汽车噪声的关键，目前在排气系统中安装排气消声器是减少排气噪声的主要方法。
Using the reference channel and wiping off the system noise, the measurement precision was improved.
通过采用参考信道，去除系统噪音，提高测量精度。
At last of design, use optocoupler device, ferrite beads and bypass capacitor to reduce system noise.
在电路板的设计中采用光电耦合器件、铁氧体磁珠、旁路电容滤波等方式减小了噪声。
An interacting multiple model (IMM) adaptive filtering algorithm based on expected system noise model was presented.
本文提出基于期望系统噪声模型的自适应交互式多模型(IMM)算法。
In this approach, a part of the system noise models are intended to adaptively match the unknown true mode.
该算法自适应调整部分系统噪声模型，使之接近符合实际的系统噪声模型。
In this thesis we analyze the sensing signal and sensor system noise, and bring forward methods of decreasing noises.
对传感器信号及传感系统噪声进行了分析，提出了减小噪声的各种方法。
Figure 2 shows the various internal chassis temperatures and the specific impact on the system noise and performance.
图2列出了不同的内部机箱温度以及它们对系统噪音和性能造成的影响。
The thermal motion analysis method needs the least parameters, but the results are greatly affected by the system noise.
热运动分析法所需要的参数少，但是受到系统噪声影响较大；
After the bandwidth and temperature, the remaining factor in determining the system noise is the effective source resistance.
讨论了带宽和温度以后，决定系统噪声的另一个因素就是等效源电阻。
The Boundary Element Method (BEM) and its application to the engine induction system noise analysis are introduced in this paper.
本文介绍了声边界元方法及其在汽车发动机进气系统噪声分析中的应用。
The building of discrete state-space models including system noise provides a basis for the exact identification and effective control.
这种包含系统噪声的离散状态空间模型的建立，为网络化控制系统的准确辨识和有效控制奠定了基础。
The low noise amplifier (LNA) can reduce the system noise and improve the receiver's sensitivity, it is the key-part in the receive system.
低噪声放大器在接收系统中能降低系统的噪声和提高接收机灵敏度，是接收系统的关键部件。
Magneto-optical disc system noise is analysed in the paper. Several methods for the improvement of signal-to-noise ratio are also summarized.
本文分析了磁光盘系统的噪声，综述了提高信噪比的几种方法。
The model of NCS with multiple-packet transmission is presented considering system noise and network-induced delay longer than one sampling period.
在考虑系统噪声和网络诱导延时大于一个采样周期的情况下，给出了多包传输的网络控制系统模型。
Antenna system noise temperature and antenna efficiency are the most important items in the system debugging and checking before the VLBI observation.
在流动vlbi的观测试验中，天线系统噪声温度和天线效率是观测前系统调试和检测的两项重要内容。
The errors in the Marine magnetic gradient measurement are divided into system noise, heading errors, geometrical effects, swell noise and sensor motion.
将影响梯度测量的误差主要分为四种：系统误差、航向磁效应、几何效应、波浪噪声及传感器运动误差。
It could be directly applied to the nonlinear model of the initial system, and could get good filtering result whether the system noise or measured noise was Gaussian or not.
该算法可以直接应用于原系统的非线性模型当中，并且不需考虑系统噪声和量测噪声是否为高斯白噪声，都能得到很好的滤波效果。
Secondly, the model of NCS with single-packet and multiple-packet transmission under considering system noise and network-induced delay longer than one sampling are proposed.
其次，在考虑系统噪声和延时可以大于一个采样周期的情况下，提出了单包传输和多包传输的网络控制系统的模型。
In this system the detected signal difference between two neighbouring instantaneous times is served as the effective signal, and the system noise points at the detector noise.
它将相邻两瞬时所检测到的信号差值作为有效信号值，系统噪声则是探测器噪声。
A decoupling algorithm is proposed in this paper to deal with the filtering problem of a class of linear discrete-time systems which consist of subsystems with correlated system noise.
针对由系统噪声彼此相关的多个子系统构成的一类线性离散时间系统，本文提出了一个解耦滤波算法。
Because the system equation is changed with time, during the measurement, the statistic character of the system noise and the observation noise cannot be estimated or be determined accurately.
由于系统方程是时变的，在测量过程中，系统噪声和观测噪声的统计特性等很难精确地估计或测定，事实上很多误差模型都不能简单的设为白噪声。
This algorithm can realize linear minimum mean square error estimation of yaw rate, and on-line estimate statistical characteristic of system noise and observation noise during vehicle running.
该算法实现了横摆角速度的线性最小均方误差估计，且可对汽车行驶过程中的系统噪声和观测噪声统计特性进行在线估计。
In quantum system, noise primary results from decoherence and imperfect quantum gates.
在量子系统中，信道噪声主要源于消相干效应和量子门的不精确性。
Presents the design methods of air conditioning water system, air distribution of rendition hall, air exhaust system, noise reduction, vibration isolation and automatic control.
分析了该音乐厅空调负荷的特点及其计算过程，介绍了空调水系统、演奏大厅气流组织、排风系统、空调系统消声和减振、空调自控的设计方法。
Presents the design methods of air conditioning water system, air distribution of rendition hall, air exhaust system, noise reduction, vibration isolation and automatic control.
分析了该音乐厅空调负荷的特点及其计算过程，介绍了空调水系统、演奏大厅气流组织、排风系统、空调系统消声和减振、空调自控的设计方法。
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