running frequency

Results indicate that the lateral forcing vibration frequency of train is close to the lateral natural vibration characteristics of the bridge when trains running at 70 and 75 km · h-1, and the resonance occurs.

研究结果表明：列车以70和75km。

互联网摘选

Compared with conventional fixed frequency control. the chip using free running quasi-resonant technique provide the agile resolvent for different application condition, also decrease the high demand of external devices.

与现有固定频率的传统控制器相比，XD2508利用自由开关频率的准谐振技术，为不同的应用场合提供了更加灵活的设计方案，同时也降低了对外部器件的过高要求及依赖。

互联网摘选

It indicates from the experiment results that the stability of laser has been highly enhanced when running with high repetition frequency after using this novel Q-switched method, and it effectively solved thermal depolarization effect, improved output ratio of Q-switching to free running.

实验结果表明，采用这种方式后，在重复频率工作时较大的提高了激光输出稳定性，有效地解决了热退偏效应，提高了调Q动静比。

互联网摘选

A new type of stepping motor driver which is used to drive three-phase reaction stepping motor is designed in the paper. The driver adopts subdivision control when running at low speed so that the low-frequency vibration of the motor becomes low.

设计了一种新型的步进电动机驱动器，该驱动器用于驱动三相反应式步进电动机，低速运转时采用细分控制，低频振荡小；

互联网摘选

The simple and common mode of obtaining line speed is chosen to calculate the diameter of the roll in the rolling-up process, the running frequency of analogue output signal of the driving converter controlling the speed of the system is used as the line speed signal namely.

收卷过程中卷径计算选用最简单、最常用的线速度获取方式，即用控制系统速度的驱动级的变频器（艾默生TD3000）运行频率模拟输出信号作为线速度信号。

互联网摘选

Take into consideration of the timing of gear shift when the vehicle running on the road, the thesis formulates the rotational speed controlling scheme of the variable frequency motor on the testing bench.

结合车辆在路面行驶时的换档时机，制定了测试台架上变频电机转速的控制方案。

互联网摘选

Enabling devices to running on rating rotate speed was attained through PLC variable frequency speed regulation.

通过PLC变频调速使电主轴运行到额定转速.

互联网摘选

The trolley mechanism: Stepless speed regulated and frequency control. Running with less impact and smoother operation.

电车机制: 无级调速调节和频率控制. 运行影响较小,更流畅的操作.

互联网摘选

Enlarging locking bandwidth and decreasing the control error of element free running frequency can make the beam pointing direction more accurate.

阵元自由振荡频率的误差越小，阵元锁相带宽越大，波束指向误差越小；

互联网摘选

Frequency measurement also is important control technology in running military power system.

频率测量也是军用电力系统运行控制中的重要技术.

互联网摘选

The Characteristics of high order, multi operating mode, running frequency uncertainty rooted in soft-switched circuit system limits the application of fixed time discrete mapping modeling method, which is suitable for hard switching circuit system, to the soft-switched circuit system.

软开关电力电子线路存在的高阶、多模态、工作频率负载依赖等特性限制了适用于硬开关电路的基于固定周期的离散时间映射建模方法在软开关电路中的应用。

互联网摘选