共振器

The system includes a resonant actuator having a natural resonant frequency and a resonant actuator electronic control system.

该系统包括一个谐振器具有自然共振频率的谐振器和一个电子控制系统。

Miniaturized rat race coupler is implemented by incorporating stepped-impedance line sections and broadside-coupled structure into the ring circuit.

本论文提出周期性步阶阻抗共振腔和微带线至共平面波导结构设计微小化鼠径耦合器之设计。

Although the first thesis on Ferroresonance was published in 1920, FR is still not a fully understood phenomenon. This thesis focuses on single phase FR in Gas Insulated Switchgearwith inductive potential transformers, fed by the circuit breaker grading capacitance. In principle, FR is a forced oscillation in a non-linear series resonance circuit including a capacitance and non-linear inductance, which shows significantly distorted voltage and current waveforms.

中文摘要虽然第一篇有关铁磁共振（Ferroresonance，简称FR）的文献早在1920年即被发表，但是此一特殊的现象至今仍然未被完全了解，本论文将讨论电力系统中之气封绝缘开关设备（Gas Insulated Switchgear，简称GIS），由於断路器的极间电容和电感型比压器（Potential Transformer，简称PT）的非线性电感所构成的单相铁磁共振；理论上，铁磁共振是由电容和非线性电感所构成的非线性串联共振，造成电压和电流波形明显的畸变。

In the last few years, researches the problem of the underwater sail machine's sound have been common, the content of the research is very extensive, including the modeling, method of its solution, frequency curve, the wave's property in spreading, the syntonic frequency and the damp material on such coupling system.

近几年，水下航行器的声振一直是国际上研究的热点，研究的内容非常广泛，其中涉及这类耦合系统的建模、求解方法、频散曲线与传播波性质、外激励下的共振频谱及阻尼材料降噪等。

In this paper, the mechanism for the formation of SPR was introduced in details. And some problems concerned how to use this type of reporter for detection were also discussed systematically.

本文较详细的介绍了表面等离子共振现象的形成机制，特别对如何利用本方法作为一种新型的物种检测报告器的有关问题做了较系统的讨论。

Meanwhile, the paper analyses the influence of vibration occurring in wheel sympathetic vibration and low temperature condition to noise.

同时，分析了车轮共振型振动和低温环境等因素对悬架系统中减振器噪声的影响。

The distribution of gear's contact stress, root stress, and contact engagement line in the engagement situation of gear pairs, were obtained on the base of explicit integration method. 3. Adopting the method of system matrix, the torsional vibration differential equation of general shafting was gained. The simple harmonic forms of excitation torque under the normal combustion or piston flameout of in-line engine and v-type engine were analysed. The decoupled algorithm of free vibration and forced vibration and the solution to the vibration damper's energy of resistance and the off-resonance calculation were studied. The sensitivity formulations of the natural frequency and vibration mode to physical parameters of system were derived by solving the eigenvalue problem. These sensitivity formulations provided the theoretical base for the dynamic modification of structure.

运用系统矩阵法建立了轴系的扭振微分方程，并对直列和V型发动机在正常发火和气缸熄火工况下的激振力矩进行了详细的简谐分析；基于精确方法推导了自由振动和强迫振动的解耦算法，给出了能量法计算中的减振器阻尼功求解和非共振计算方法；并研究了曲轴系扭振非线性分析中的变惯量问题，得到了单缸转动惯量的精确求解公式以及变惯量和固有频率的关系式；最后，从特征方程和振型正交性出发，推导了固有频率和振型对轴系转动惯量和刚度等物理参数的灵敏度，为扭振系统的结构动力学修改提供了理论基础。

A hybrid vibration-powered microgenerator has been presented by combining the structures of piezoelectric generator and electrostatic generator, and the structure of the microgenerator is optimized by a Finite Element Method to obtain the desired low resonant frequency.

介绍了一种结合了压电式能量采集与静电式能量采集原理的复合式振动能量采集器。其结构通过有限元分析软件的优化设计，得到了期望的低频共振频率。

The results here show that the blade lag damper can greatly reduce the instability range of a helicopter, and that the pitch angle of blades takes an important role in the stability of ground resonance, as it does in the flap-lag stability of a blade

本章结果表明桨叶的减摆器阻尼可以有效地减小不稳定运动发生的区域。并且，同桨叶的挥摆稳定性一样，桨叶变距角也是影响&地面共振&稳定性的一个重要因素。

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。