查询词典 vibration-proof

The result indicates that it is not excellent beyond the current research method except obtaining the more dynamic parameters, although the virtual prototyping continuum model of the longitudinal vibration and the transverse vibration of the belt conveyor is analyzed in an emulation mode.

分析结果显示，虽然建立带式输送机纵向振动连续模型和横向振动连续模型虚拟样机进行仿真分析，可以比现有方法得到更多的动态参数，但是，并不能超越现用方法的研究范围。

Based on a series of signal process and noise source identification techniques, especially the major noise source identification methods, such as expurgation method, sound intensity analysis, spectrum analysis vibro-acoustic correlation analysis and so on, the pass-by noise control of SC7080A and SC6360B are studied in detail. By the roadway and dais experiments, the major noise and radiating parts are identified and some economical controlling methods are made. For the SC7080A, to control the emissing noise from the intake and shell vibration of air cleaner, a intake muffler is installed between the air cleaner and intake valve. Based on the theory of Helmholtz resonator, One three-parallel-connected resonant silencer is designed and trial-manufactured. For the SC6360B, the attenuation performance of exhaust muffler in high frequency region is improved. To reduce the vibration noise of shell part, the structure of oil sump tank, exhaust manifold shield and exhaust manifold shield are analyzed and improved. At the same time, some measures, such as sound absorption, sound insulation, are taken to reduce the noise of engine surface emissivity and a sound shield is designed.

本文首先综述了目前国内外汽车加速噪声控制的现状、主要方法和技术措施，在此基础上，结合SC7080A和SC6350B汽车的车外加速噪声水平及现状，综合运用分别运行法、声强法、频谱分析法、声振相干函数法等现代噪声源识别方法，对SC7080A和SC6360B汽车进行了准确详细的车外加速噪声源识别并提出了经济可行的控制方案，针对SC7080A，主要在空气滤清器和进气阀门之间的进气管道上加装进气消声器，抑制空气滤清器壳体表面和进气口两处的噪声辐射，根据Helmholtz共振腔原理设计了三腔并联旁支型共振消声器，并进行了工程化设计和试制；针对SC6360B，主要改善了排气消声器在高频段的消声性能，对罩壳类零件进行了结构改进，降低了其表面噪声的辐射，并对发动机舱进行了吸声、隔声处理，设计了发动机隔声罩。

In order to extenuate the vibration with several frequencies caused by different faults, the feed forward learning control method for multi-frequency vibration is presented.

论述和推导了在转子运行状态下，用该方法实现不平衡扰动自动识别和控制参数的自动整定的理论方法、控制过程和控制算法。

Based on wind tunnel test and theoretical analysis,the vibration mechanism, vibration shape,dynamic response and gust loading factor of the long-span grid roof of Qingdao gymnasiums subjected to wind excitation are analyzed systematically in this dissertation ,and some valuable results are obtained.

本文采用风洞模型试验和计算机数值计算相结合的方法，对青岛体育馆的风振机理、风振形态、风振响应以及风振系数进行了系统研究，取得了一些有意义的结论。

Based on structural singular value theory, the robust control model for vibration response is built, and the design method of μ- synthesis controller is presented. The main ideal is as follows: by introducing fictive uncertainty, the robust performance problem of vibration response is transformed into the robust stability problem of the augmented system. It can be solved by D K iteration.

基于鲁棒结构奇异值理论，建立了振动响应的鲁棒控制模型，提出了设计鲁棒μ控制器的方法，通过引入虚构的不确定块，将振动系统响应性能的问题转化为广义系统的稳定鲁棒性问题求解，兼顾了系统的稳定鲁棒性和性能鲁棒性。

For high-speed flow of medium, the gate to open in local conditions can cause the vibration of the gate, and the vibration may damage the gate and the valve seat sealing surface, and cutting medium will suffer erosion flashboard.

对于高速流动的介质，闸板在局部开启状况下可以引起闸门的振动，而振动又可能损伤闸板和阀座的密封面，而节流会使闸板遭受介质的冲蚀。

Measure the result as follows: Ra(Surface roughness of steel ball)=0.015 u m, wavmess=0.06 um,△Sph=0.010 u m, VDWL=0.015 u m. The flocculus steel balls measured were assembled in Luoyang Precise Bearings Company. The results show that the bearing vibration values reached Z2 group near 98%, the bearing vibration values with new technique balls tower above sixty percentile than grindtechnics.

然后对加工出的"绒面"钢球在洛阳轴承集团进行了合套测振试验，测振试验结果表明：振动值达到Z2组的比例达到98％，比用研磨工艺制得的钢球合套后测得的振动值数据高出60个百分点；振动值达到Z3组的比例高达到83～97％，比用研磨工艺制得的钢球合套后测得的振动值数据高出77～90个百分点。

The ftran and flong were measured from -20 to 70℃ by the methods of bending vibration and magneto-striction longitudinal vibration, respectively.

分别采用悬挂弯曲振动和磁致伸缩纵振法测量，温度范围为-20～70℃。

The continuing role of foreign forces in the cycle under forced vibration of the vibration, such as forced cyclical external force.

在周期外力的持续作用下所产生的振动为受迫振动，这种周期性的外力称为强迫力。

In this paper, the resonances of parametric vibration with forced vibration is analyzed and the bifurcation equation of the system is obtained and the singularity analysis is made.

分析了水轮发电机定子系统的参、强联合共振，求得了稳态响应的分岔方程，进行了奇异性分析，揭示了一些新的规律和现象。

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。