噪声控制

To reach the requirement of locomotive running standard by railway ministry and to control noise, this paper analyses, improves and tests Starting Transmission Gear Box (logogram as "STGB").

为使内燃机车的运行质量达到铁道部标准的要求，使内燃机车的噪声得到有效的控制，有针对性地对启动变速箱进行了分析、改进及试验。

We tested the PF30 with a power-line analyzer that provides immediate, audible feedback on the noisiness of any given outlet via a built-in speaker and volume control.

我们测试的PF30的电力线分析仪，提供即时，声音反馈的噪声任何特定出口通过内置扬声器和音量控制。

The sufficient conditions to guarantee robust exponential stability for the closed-loop systems are obtained based on Linear Matrix Inequality, moreover, the approach of design of robust H# output feedback controller is introduced.3 The problem of reliable H# control for a class of Lur"e systems with polytopic uncertainties is studied when all control components are operational as well as when some control components experience failures, the design approach of reliable H# controller is also obtained.4 Considering a class of uncertain Lur"e singular system with time-delays, the problem of robust stability is investigated based on Barbalats Lemma and nonsingular linear transformation of model reduction.

针对一类不确定Lur'e奇异时滞系统，基于Barbalat引理以及非奇异降阶变换，讨论了Lur'e奇异时滞系统的鲁棒稳定问题，提出了鲁棒H_∞状态浙江大学博士学位论文反馈控制器的设计方法。5、针对一类具有饱和执行器的不确定Lur'e奇异系统，提出了时滞依赖的鲁棒稳定与鲁棒二次镇定的充分条件，所的结果不需要参数的整定。6、针对任意协方差有界的有色噪声，讨论了一类不确定Lur'e奇异系统的鲁棒凡滤波问题，得出了鲁棒几滤波器设计的充分条件。7、针对一类不确定Lur'e时滞系统，通过线性变换，把它转换成奇异系统，根据奇异系统鲁棒控制理论所得出的鲁棒稳定与鲁棒镇定控制器设计的充分条件具有很小的保守性。

The study on the transmission mechanism of power flow in complex coupling system, which aims at the optimum control of the system dynamic performance, is one of the most challenging and prospective work in the field of vibration and noise control.

基于传递功率流控制原理研究复杂系统的动态特性与最优设计，是目前振动噪声领域的前沿课题和发展方向。

Laser fuze ; APD receiving system ; optimum bias control ; low-noise amplifying circuit

激光引信； APD接收系统；最佳偏压控制；低噪声放大电路

Unscented transformation is used to improve the performance of extended kalman filter in the field of automatic control because it can reach accuracy of second order linear approximation. UT compensation can make us to estimate more accurate noisy acoustic model parameters corresponding to static feature of speech and we also proposes several kinds of engineering implementations to improve the efficiency up to six times faster than usual implementation of UT compensation.

针对声学模型参数在噪声环境下非线性变化的补偿问题，现在国际上广泛使用的PMC和VTS声学模型参数补偿算法只能达到其线性展开的一阶近似，所以本文通过使用自动控制领域用来提高扩展卡尔曼滤波器性能的称作Unscented Transformation的技术，可以达到对声学模型参数非线性变化的二阶近似，得到的声学模型参数更加精确。

From the orotund and basic characteristic, each of the voice feels characteristics, then the technique of voice , modulate control a few aspects of the technique, the voice of noise to modulate the set to the campus broadcast and host is in sowed voice of the related problem proceeds the research.

从声音的基本特征、各频段的音感特点、拾音技术、调音技术、噪声的控制等几个方面对校园广播调音台与主持人在播音中的相关问题进行研究。

The research that basically pursues noise and oscillatory control technology and its engineering design work.

主要从事噪声和振动控制技术的研究及其工程设计工作。

The period of this AB oscillation of the shot noise is modulated as varying the dot level by the capacitively coupled gate voltage.

离散噪声AB振荡的周期可以通过控制量子点能级的门电压来调节。

The ability of tracking the reference signal and restraining the parameter perturbation and stochastic disturbance are improved.

这种算法克服了广义预测控制中求解逆矩阵的缺点，提高了系统响应的速度，并且具有较强的跟踪给定信号、抑制系统参数摄动和随机噪声的能力。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。