使阻尼

Now to figure out how to make the damper so I can remove it in order to clean the ashes from the ashpit.

现在要弄清楚如何使阻尼器，所以我可以将它移除，在以清洁的骨灰从ashpit 。

Critical damping is defined as the least amount of viscous damping that causes a single degree-of-freedom system to return to its original position without oscillation after initial disturbance.

在第一次受力后，来自阻尼器的阻力使振动物流刚能不作周期性振动便能最快地回到平衡职位的情况，称为临界阻尼。

It can suppress displacement and velocity responses of structure.

试验结果表明局部速度反馈控制，用于调节压电摩擦阻尼器阻尼特性是十分有效的，它可以使结构在不增加加速度响应的条件下降低结构的位移和速度响应。

In order to optimize performances of shunt active power filter of harmonic compensation, attenuation ratio for switching ripple, stability and power losses, an improved LCL filter topology was presented based on the analysis of the frequency characteristics of the LCL filter, in which a switching-ripple shunt branch and a series-inductor were adopted to the damping resistor to reduce the power losses dramatically.

为了使并联有源滤波器谐波电流补偿性能、开关纹波衰减率、系统稳定性和功率损耗等方面性能得到系统的折中和优化，提出了一种改进型LCL滤波器拓扑，该结构充分利用了LCL滤波器的频率特性，在阻尼电阻两端引入开关纹波谐振分流支路，同时在阻尼电阻上串联一小电感，有效的减少了阻尼电阻的损耗而不改变系统的静态和动态性能。

According to analysis of roots locus,fast excitation tends to decrease damping of power systems which is controlled by AVR than slow excitation.But eigenvalues of power system are far from imaginary axis and strong damping is obtained when fast excitation system is added.

在高放大倍数的AVR控制下，快速励磁较慢速励磁更容易恶化系统阻尼；但是在同时附加励磁控制的情况下，快速励磁可使系统的机电模式根轨迹远离虚轴，机电模式阻尼较大；而慢速励磁下，系统机电模式根轨迹接近虚轴，机电模式阻尼较小，快速励磁优于慢速励磁。

The research results show that stiffness ratio of superstructure and ratio of damping and stiffness in isolated story have great influence on local deformation of structure. It can reduce the local deformation and increase entirety of structure effectively through rational laying rubber bearing and adjusting distribution of stiffness and damping in isolated story. The specific conclusion of the paper is that local deformation of isolated structure becomes minimality when translational stiffness ratio of superstructure is consistent with stiffness ratio of isolated story; and it also can reduce local deformation of minor structure by reducing damping ratio of isolated story properly.

本文研究表明，上部结构的刚度比及隔震层的刚度和阻尼比对结构的局部变形有着很大影响，通过橡胶垫的合理布置，调整隔震层的刚度和阻尼分布，能有效的减小结构的局部变形，提高结构的整体性，从而使隔震效果得以确保；本文的具体结论是，当上部结构的侧移刚度比与隔震垫刚度比一致或相近时，隔震结构的局部变形最小；适当减小子结构的隔震层阻尼比可减小该子结构的局部变形。

Given the same area, when a patch is cut into two segments and set each segment at the edge of plate in the width direction and symmetrically along the modal nodal line y=W/2, using MCLD treatment can produce better damping than PCLD treatment.

分析表明，在覆盖面积相同时，将阻尼块沿x方向等分为2块，将每块放置在板的宽度方向的边部，并沿模态节线y=W/2对称，可使MCLD获得更好的阻尼改进效果。

The specific contents are as follows:Firstly, the causes of energy balance method result has some errors is analyzed. Then energy balance method is improved from the following aspects: the wind power input, the conductor self-damping, the damper dissipated power and vibration solution of Stockbridge dampers-conductor coupling system. So that improved energy balance method can consider more influential factors to enhance accuracy.

本文对输电线的微风振动控制和次档距振荡进行了多方面的研究，主要包括能量平衡法的改进、防振锤-输电线耦合系统的振动求解、阻尼线的耗能计算理论、微风振动的室内模拟试验、分裂导线微风振动的精细计算理论、多分裂导线的最大次档距和阻尼间隔棒优化布置等几部分，具体如下：首先分析了微风振动传统计算方法能量平衡法计算误差较大的原因，分别从风能输入功率、输电线自阻尼功率、防振锤消耗功率、输电线-防振锤耦合体系的振动求解等方面，对能量平衡法进行了改进，使能量平衡法可以考虑更多的影响因素以提高求解精度。

The friction plate produces friction damping on the rope wheel under the influences of centrifugal force. The gear speed change helps the rope wheel produce balanced damping torgue when people descend.

利用离心使磨擦块在绳轮上产生磨擦阻尼，通过齿轮变速，使阻尼距与人下降时在绳轮上形成的主力距相平衡，以实现匀速下降，从而保证了被救者的安全。2。

In chapter three, the passive vibration control of a smart cantilever beam with piezoelectric shunt damping system is studied theoretically. In this chapter, the mechanical impedance of piezoelectric shunt damping system is analyzed, and the parameters of the RLC piezoelectric shunt circuit are optimized via transfer function of the piezoelectric shunt damped beam in order to optimize the vibration damping effect.

第三章。研究了利用压电分流阻尼系统进行压电智能悬臂梁被动振动控制的方法，分析了压电分流阻尼系统的机械阻抗，并通过传递函数方法对RLC串联压电分流谐振电路元件的参数进行了优化，以使压电分流阻尼系统的阻尼效果达到最优。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐