查询词典 filter

Abstraction :This paper analyzes the principle of Butterworth digital filter,discuss bilinear transformation method of filter design;record a piece of voice by Microsoft voice recorders, carry on its a time-domain analysis, spectral analysis;then design a specified Butterworth band-stop filter based on the theory of bilinear transform,analyze the filter by the tool named Fvtool;and filter the voice signal acquired by voice recorder.finally compare its characteristics of frequency domain and time domain,study the applications of Butterworth filter in digital signal processing ,in particular in signal denoising.

本文分析了巴特沃思数字滤波器的原理，探讨了双线性变换法设计滤波器的方法；用微软录音机采集一段语音，对其进行了时域分析，频谱分析；然后使用双线性变换法设计了一个的巴特沃思带阻滤波器，并且使用fvtool对设计的滤波器进行分析；然后利用该滤波器对采集的语音信号进行滤波。最后对比滤波前后的语音信号的时域和频域特性，研究了巴特沃思滤波器在信号处理尤其是信号滤波去噪方面的特性和应用。

Zadeh put forward, make MTL-algebra"s filter conception fuzzified, provide the conceptions and properties of fuzzy filter, obtain the structure of all fuzzy, filters, prove that the set of all fuzzy filters forms a complete distribution lattice; Provide several fuzzy Boolean filter"s equivalent forms, introduce fuzzy positive implicative filter, fuzzy obstinate filter and fuzzy ultra filter, discuss some property characteristics and terms that transform each other under certain terms to obtain them.

Zadeh提出的模糊集思想使MTL-代数的滤子概念模糊化，给出了Fuzzy滤子的概念和性质，得到了全体Fuzzy滤子的结构，证明了全体Fuzzy滤子之集构成完备的分配格；给出了Fuzzy布尔滤子的若干等价形式，并且引入了Fuzzy正蕴涵滤子，Fuzzy固执滤子和Fuzzy超滤的概念，得出了它们的一些性质特征以及在一定条件下之间相互转化的条件。

On the basis of direct modelling method by using extended Kalman filter, a new method combining extended Kalman filter with adaptive extended Kalman filter is presented to model gyro drift directly from rotate angle of turntable. Extended Kalman filter has great estimation error, what is more, may be divergent if the model and noise statistic are not accurate or wrong. The new method solves the problem of general extended Kalman filter by using fictious noise with timevarying statistic to compensate the linearized model error of extended Kalman filter. The parameter estimators of single-axis and double-axis servo test are designed from it.

本文深入研究了根据伺服试验数据进行陀螺仪漂移误差模型建模的方法，在应用广义Kalman滤波器直接建模的方法基础上，针对广义Kalman滤波器对于不精确或错误的模型和噪声统计，估计误差较大，甚至滤波发散的缺陷，借助于用带时变噪声统计的虚拟噪声补偿广义Kalman滤波的线性化模型误差的新思想，提出了用广义Kalman滤波和自适应广义Kalman滤波算法相结合的方法由转台的转角数据直接建模陀螺仪漂移误差模型，并设计了陀螺仪单轴伺服和双轴伺服测试时参数估计的滤波器。

Customized special filter, a filter construction machinery units filter filter hydraulic filter products primarily applicable; Benz / BMW / Rolls Royce / Daewoo / modern | Road by Mainz | Scania | Perkins | Renault | Hino | Mitsubishi | Isuzu | Dorman | Caterpillar | Toyota | Cummins | Volvo | Detroit | Komatsu | Hitachi | Sumitomo | Kobelco | Li Bo Haier | Nissan | Germany Cayman | Ssangyong | Steyr | Auman | Hongyan | ABG paver | BMW roller | excavator | Loader | bulldozers | plains | Dump Truck | milling machine | tunnel blunt hook | Concrete Pump two compressors and vacuum pumps from oil and gas purification filter精密过滤器apply mainly to; Ingersoll-Rand | Atlas | Fusheng | TING of | Amat High | Iwata | Mitsui | Sunningdale | Kobelco | Matai | Ke Long | Jia Bao | Catherine | Po Ju | Giant Pa | Swan | Kang Puyi | Fidelity | Siemens | champion.

定做特殊过滤器、滤芯一工程机械发电机组滤清器滤芯液压过滤器系列产品主要适用；奔驰/宝马/劳斯莱斯/大宇/现代|道依茨|斯堪尼亚|帕金斯|雷诺|日野|三菱|五十铃|多盟|卡特彼勒|丰田|康明斯|沃尔沃|底特律|小松|日立|住友|神钢|立勃海尔|尼桑|德国曼|双龙|斯太尔|欧曼|红岩|ABG摊铺机|宝马压路机|挖掘机|装载机|推土机|平地机|自卸载重车|铣刨机|隧道钝勾机|混凝土泵车主要适用于；英格索兰|阿特拉斯|复盛|寿力|艾高|岩田|三井|向阳|神钢|玛泰|柯龙|保嘉|凯萨|宝驹|巨霸|天鹅|康普艾|富达|西门子|冠军

There are many types of filtering methods, such as the limit speed filter and limit amplitude filter used in the program determination method, mean value filter, arithmetic average filter, sliding average filter, etc. This research adopts the combined average filter method that can eliminate the pulse interference.

有许多种过滤方法，如极限速度滤波和限幅滤波程序测定，均值滤波器算术平均滤波，滑动平均滤波等本研究采用了组合平均滤波法，能有效消除脉冲干扰。

Filter materials series: fruit shell, anthracite coal filter material, quartzite filter material, cobblestone, pomegranate filter material, magnetic iron ore filter material,manganese sand filter,heavy and light weight biological ceramisite, shale rock ceramislte, fiber ball filter material, modified fiber ball, porcelain sand, EPS polystyrene foam filter bead, active aluminum oxideremoving fluorine

滤料系列：果壳滤料、无烟煤滤料、石英砂滤料、卵石、石榴石滤料、磁铁矿滤料、锰砂滤料、重、轻质生物陶粒、页岩陶粒、纤维球滤料、改性纤维球、瓷砂、EPS 可发性聚苯乙烯泡沫滤珠、活性氧化铝。

Secondly, when kalman filter has reached steady state its error covariance will have a very small stationary value, namely filter dropping off'. Thirdly, the traditional kalman filter cannot adjust its filter parameters with statistic characteristic of the noise. To overcome the deficiency of kalman filter, an SVD-based adaptive kalman filter is put forward in the paper. The filter restrains the filter divergence by matrix singular value decomposition. The eigenvalues and eigenvectors of the matrix are insensitive to tiny change of matrix element and acceptable error.

然而，传统的卡尔曼滤波器存在以下问题：问题一，因噪声统计特性估计不准确和计算机舍入误差引起的滤波发散现象；问题二，在卡尔曼滤波器达到稳态时，其误差方差阵将饱和使其对信号的突变变得不敏感，问题三，传统的卡尔曼滤波器对滤波参数无自适应能力，不能随着噪声统计特性的改变而调整自身的滤波参数。

Main selling products: laminated pot; sterilization pot; warm water tank; stainless steel tank; heterogeneous machines; Colloid Mill; double-effect concentrator; Vacuum Degasser; cleaning system; ingredients tank; fermentation tank; dilute with tank; reaction vessel; None bacteria tank; hot and cold cylinder; of sugar pot; frame filter; milk cans; deployment tank; double-filter; diatomaceous earth filter; microporous membrane filter; titanium rod filter ; Quartz sand filter; ultra-high temperature instantaneous sterilizer; sand filter rod; activated carbon filters; warm water tank; hollow fiber ultrafiltration; stainless steel self-priming pump; stainless steel sanitation pumps; milk pump; beverage pump; explosion-proof health pump; Stainless steel centrifugal pump; screw; energy-saving oven

主要销售产品：夹层锅；杀菌锅；保温水箱；不锈钢罐；均质机；胶体磨；双效浓缩器；真空脱气机；清洗系统；配料罐；发酵罐；稀配罐；反应釜；无菌贮罐；冷热缸；化糖锅；板框过滤器；奶罐；调配罐；双联过滤器；硅藻土过滤器；微孔膜过滤器；钛棒过滤器；石英砂过滤器；超高温瞬时灭菌机；砂棒过滤器；活性炭过滤器；保温水箱；中空纤维超滤；不锈钢自吸泵；不锈钢卫生泵；奶泵；饮料泵；防爆卫生泵；不锈钢离心泵；螺杆泵；节能烘箱

Our product series include gravity fabric band filter,magnetic separator,magnetic separator with disc,gravity drum filter,magnetic conveyor,hinged belt conveyor,dredge conveyor,hydrocyclonge separator,pneumatic vacuum filter,hydraulic vacuum filter,precoat filter,vertical plate stack filter ,magnetic stick separator,rotary drum filter with permanent band,screw conveyor,disco oil separator,band oil separator,and centrifuges filter.

公司产品主要有：重力式纸带过滤机、圆柱面磁性分离器、梳齿磁性分离器、鼓形纸带过滤机、磁性排屑器、链板排屑器、刮板排屑器、旋流器、空气真空纸带过滤机、液体真空纸带过滤机、预涂助滤过滤机、板式精密纸带过滤机、磁棒分离器、反洗滤网筒式过滤机、螺旋排屑器、盘式油水分离器、离心过滤机。

Our successful products are as follows:Coarse Filter Cotton,Ceiling Filter,Floor Filter,Heat-Resistant Air Filter,all kinds of Pocket,Foldaway Filters,Primary Filter,Secondary Filter,HEPA Filter,Activated Carbon Filters,and all different kinds of clean products and equipments used in the cleaning room and ventilation system of HVAC(heating and ventilation application).

各类产品广泛用于：工业喷涂、汽车厂、机场、半导体厂、食品厂、通信电子、化学制药、五金塑胶、家用电器、机电设备、精密仪器、环保等各个空气净化领域。主要产品有：喷涂室用初效过滤棉、顶棉、漆雾毡，干燥箱用耐高温过滤器。初中效袋式，板式，折叠过滤器。HEPA空气过滤器，活性炭过滤器，过滤网，油烟过滤网等洁净室及HVAC通风系统的空气净化设备与产品。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。