查询词典 critical damping

When AVR is added to other signals, such as speed, angle, active power, et al., power systems have equal damping is a constant that does not change on any conditions of general damping.

在AVR的基础上附加转速、功角、功率，乃至于附加远方机组任意信号的复杂多变量励磁控制方式下，电力系统总阻尼保持守恒，其数值与单纯AVR控制时相等。

In chapter 5, a kind of viscoelastic damping material is compounded which meets requirements of the structure and the function of high damping machine tool spindles.

第五章介绍了一种根据高阻尼机床主轴的结构和性能要求配制的高分子粘弹性阻尼材料，并对材料的阻尼特性与预载荷的关系进行了试验研究。

For this reason the authors design a governor-side PSS, its design principle is as simple as traditional PSSs and it possesses good robustness and decomposing-coupling characteristic in multi-machine system. It will not bring about negative damping to other machines while it provide damping for local machine, so the coordination of parameters and selection of installation site can be avoided.

作者设计了一种调速侧电力系统稳定器，其设计原理和传统的PSS一样简单，且具有较好的鲁棒性，同时还具有多机解耦特性，给本机带来阻尼的同时不会给其它机组带来负阻尼，避免了参数协调和安装地点的选择。

This balata lies between shake mat is phyletic and various, norms is all ready, facilitate cut into parts cut, assemble agile, can fight effectively press damping, apply to punching machine, forging press, fan, water pump, dynamo, air conditioning to wait for those who shake big Electromechanical equipment damping to use.

该橡胶隔振垫类别众多，标准完备，方便裁切，组装灵便，可有用抗压减振，适用在冲床、锻压机、风机、水泵、发电机、空调等撼动大的机械电子配置减振之用。

Large oil pressing traction machine, 650T, 350T, 200T; Mechanic traction damping machine, 100T, 55T; Damping machine, 160T--16T;and other auxiliary machines.

加工生产设备齐全：其中大型油压拉伸机650T、350T、200T等多台。

The rebounding damping technology, that the function in the same kinds of products sold in the market are not in common, means when you pull the drawer out to the bottom, it will has a process of soft closing and rebound, which can reduce the noise made by the things loaded in the drawer in efficiency. Moreover, because of the variable damping technology, which help to lessen the force of of the inertia made by the motion of the box when open or close it, and it will extend the useful life of the cabinet effectively. Therefore, it proved that the two-way slow motion cabinet have a longer useful life than the single soft-closing drawer system. And that is the reason why GRASS HOPPER is so popular in many countries all over the world.

反弹阻尼技术就是当你的橱柜抽屉拉到尽头时，有一个轻微的缓冲反弹过程，这样就减小了抽屉里面的装载物的碰撞声音，能达到更加实际意义上的静音，同时由于具备这种功能，在开合抽屉时就大大减小了由于抽屉的运动惯性对柜体产生的破坏力，这样就有效的延长了橱柜的使用寿命；所以使用双缓冲抽屉的橱柜比使用单缓冲抽屉的橱柜寿命明显延长，而市场上还没有具备这种功能的同类产品。

The rebounding damping technology, that the function in the same kinds of products sold in the market are not in common, means when you pull the drawer out to the bottom, it will has a process of soft closing and rebound, which can reduce the noise made by the things loaded in the drawer in efficiency. Moreover, because of the variable damping technology, which help to lessen the force of of the inertia made by the motion of the box when open or close it, and it will extend the useful life of the cabinet effectively. Therefore, it proved that the two-way slow motion cabinet have a longer useful life than the single soft-closing drawer system. And that is the reason why GRASSHOPPER is so popular in many countries all over the world.

反弹阻尼技术就是当你的橱柜抽屉拉到尽头时，有一个轻微的缓冲反弹过程，这样就减小了抽屉里面的装载物的碰撞声音，能达到更加实际意义上的静音，同时由于具备这种功能，在开合抽屉时就大大减小了由于抽屉的运动惯性对柜体产生的破坏力，这样就有效的延长了橱柜的使用寿命；所以使用双缓冲抽屉的橱柜比使用单缓冲抽屉的橱柜寿命明显延长，而市场上还没有具备这种功能的同类产品。

Chining methods of semi-cone damping groove as well as studies the design of variable vane pump port plate by semi-cone damping groove.

讨论了该减振槽的优点和加工方法。

Finally; the numerical simulate and ANSYS do qualitative analysis certification. The result of analysis, free damping layer is great effetely than constrained damping layer on restrain vibration.

最后；再以数值模拟与ANSYS软体作定性验证分析，分析结果贴覆阻尼与夹芯阻尼对抑制振动效果较佳。

The following exciting results are revealed: 1 When considering the influence of some nonlinear elements such as hard-limit of exciters, the effects of some devices such as Power System Stabilizer and Static Var Compensator which can introduce positive damping in power system, the reasonability of system parameter values in simulation, the SNB surface and HB surface on the boundary of SSSR will turn close to each other and even coalesce together; 2 Under some conditions, coupling between slow exciters and shunt capacitors will bring negative damping in power system dynamics, which increases the possibility of oscillatory instability. So the power system with mass shunt compensators is easily subjected to the oscillatory instability. In recent years, chaotic phenomena of power system have been reported many times. Some simulation studies even found chaos existing inside the power system SSSR. In this dissertation, chaotic phenomena in power systems are thoroughly studied in order to make clear the relation of chaos and SSSR. The following results are derived: 1 Based on Li-Yorke Theorem and their definition on the chaos, the existence of chaos in power system is verified; 2 Three possible routes of causing chaos in power system are found and deeply investigated. They are route of cascading period doubling, route of directly initial energizing and route of torus bifurcation (or quasi-periodicity). The latter two routes are investigated for the first time in power system stability studies; 3 When the stability conditions of chaos are broken, it is found they can lead to voltage collapse, angle divergence, or voltage collapse with angle divergence simultaneously.

针对在电力系统小扰动稳定区域内可能存在混沌吸引域的有关报道，本文深入研究了电力系统混沌现象的出现途径和与系统失稳模式之间的关系：1利用Li-Yorke定理和Li-Yorke的混沌定义，从理论上证明了电力系统混沌现象的存在性；2发现了电力系统中导致混沌出现的三种可能途径：倍周期分岔导致混沌、初始能量直接激发混沌和经由环面分岔导致混沌，并对后两种新发现的途径进行了较为细致的研究；3发现了混沌极限环破裂导致电压崩溃、角度失稳以及电压崩溃和角度失稳同时出现的现象，其中混沌极限环破裂导致系统角度失稳和电压崩溃及角度失稳同时出现的现象均属首次报道；4证明由微分-代数方程描述的系统模型，其小扰动稳定域的边界只包含HB、SNB和SIB三种分岔界面，在SSSR的内部和边界上，均不可能存在会导致混沌的点，从而将混沌现象排除在小扰动稳定域的研究之外，简化了后者的研究工作。

The production moved off-Broadway to New York City, where she won the Joseph E. Calloway award for her performance, and was profiled in American Theater Magazine as one of ten young theater artists to watch.

生产提出过百老汇的新的纽约市，在那里她赢得了约瑟夫calloway奖，她的表现，并于异型在美国的战区杂志之一， 10战区的青年艺术家观赏。

It's a risk tradeoff, and I believe that adding test support code usually wins.

这是一个风险的权衡，我相信添加测试代码通常会占上风。