调速

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。

The timing pump is a positive displacement pump set to ensure that product flows through the entire system at a predetermined and acceptable rate.

这种调速泵是一个容积式泵，用来确保产品以确定的可接受的速率流过整个设备。

In this chapter, we will introduce to you various tools that are used for the installation of kitchen cabinet, including percussive drill, Jig saw, shift-gears electric drill, corner grinder, polisher, screw driver, pencil, tape, hammer, pincers, wrenches and glue feeder

这一节给大家介绍一下厨柜安装用到的各种工具，包括：专用工具箱冲击钻/穿梭机/调速电钻/角磨机/抛光机/螺丝刀/铅笔/钢卷尺/角尺/铁锤/钢钳/扳手/胶枪等。

One motor driving for each spindle drum wind output speed adjustable by inverter.it can produce feather yarn without twist(5～20mm or 20～35mm must be mentioned when order).the longest of feather is 35mm.

单锭单电机，槽筒卷绕，输出变频调速，可加工无捻羽毛纱（20mm 以上或20mm）以下，订货时需说明，羽毛纱最长可达35mm。

The electric control system of transducer adjusting speed shearer was designed aimed at driving on large obliquity working face.

为在大倾角工作面上运行的电牵引采煤机，设计了四象限变频调速采煤机电气控制系统。

Combined with technical transformation of 125MN extrusion press extrusion dummy block transportation system, by analyzing the existing problem in the old system, choose a scientific project-to make a frequency-converter speeding-adjusting system of crane based on communication of Profibus-DP.

结合125MN挤压机运垫系统的改造，通过分析老系统存在的问题，制定科学的改造方案－基于Profibus-DP标准的通信变频调速系统，并组织设计、选型和实施，从根本上降低设备故障率，提高系统运行速度和控制精度，并为其他在线设备的电气改造提供可靠的经验。

YZR range of m otor and inducition eddy-current brake.

重机械中电力传动和调速。

The experimental result shows that the model is in point to simulate the engine power control.

实验结果表明，该模型能够满足电子调速器参数仿真的要求。

Thus, the intelligent heat exchanger can work economically and safely during the absterging cycle by approaching a point of the theoretically designed working condition.

在智能化的实时监控和变频调速下，使换热器能够在除垢期内逼近设计时的高效换热点经济安全运行，并为设备的预知维修和节能减排提供可靠的技术保证。

And the simulation experimentation is done to test the adaptability of the adjustor to the parameters change of rotor resistance.

就该调节器对转子电阻参数变化的适应能力做了仿真试验，仿真结果表明，在交流调速系统矢量控制的基础上引入自适应模糊控制调节器，比常规的模糊控制调节器更好的适应电机的参数变化，使在转子电阻变化的情况下，系统的性能依然保持良好。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。