激振器

First device includes vibrating tube, exciter and sensor.

一次仪表部分包括振动管、激振器和传感器等。

To change the exciter eccentric weight, get a different amplitude.

改变激振器偏心重，可获得不同振幅。

In the study, we have found that when the long axis of an elliptical transducer is 2.5 times of the distance between nodal line and the plate center under free boundary condition, the depth of the first dip in mid frequency range of SPL spectrum can be greatly reduced.

从这些关系中可以得到激振器长轴是在自由边界条件下，节线到振动板中心距离的2.5倍时，中音谷会得到比较平缓的结果。

For plates with same thickness and material constants but different aspect ratios, we have studied how the distance from the nodal line of the first bending mode to plate center and the size of transducer affect the depths and locations of the first dips in mid frequency ranges of the plates' SPL spectra.

讨论在振动板厚度、材料常数固定不变的情形下，藉由改变振动板长？i比及激振器尺寸，来找出第一个弯曲模态图中节线到振动板中心距离与中音谷声压落差值、位置之间的关系。

The shaker includes a dual mass flywheel and the rotate and pendulum driven mechanism; in the rotate and pendulum driven mechanism, the rotary cylinder body of the rotatable hydraulic rotary cylinder (8) is connected with the sub flywheel (15) connecting with the main flywheel (13) and a rotary cylinder shaft (4) at the same side through a transmission sleeve (11) connecting to the rotary cylinder right end cover (9); a torsional transducer (10) and a turbulence iron core of an angular sensor (12) are arranged on the sub flywheel shaft, a winding of the angular sensor is positioned on the transmission sleeve fixedly connected with the main flywheel.

该激振器包括双质量飞轮及其旋转和扭摆驱动机构；所述旋转和扭摆驱动机构，其旋转液压摆缸(8)的摆缸体通过与摆缸右端盖(9)相连的传动套(11)，在同侧与主飞轮(13)和与摆缸轴(4)相连的次飞轮(15)相连接；扭矩传感器(10)及摆角传感器(12)的扰流铁芯装在次飞轮的轴上，摆角传感器的线圈装在与主飞轮固连的传动套上。

This paper describes the principle and method, by which the modal parameters of symmetrical plane structures can be measured by means of ganeral simple exciters and measurement instruments.

本文描述了用简单的通用激振器和测量仪器测量对称平面结构模态参数的原理和方法。

A number of electromagnetic vibration exciters of a large size have been produced for vibration testing in the aircraft and missile industries.

为了进行航空及导弹工业的振动试验，已经建造了若干大型电磁式激振器。

By numerical simulation,the effects of the exciters eccentric torque,motor power and resisting moment due to rotating friction on self-synchronization motion are discussed.

通过数值仿真计算，研究了激振器的偏心矩、电机功率、偏心转子回转摩擦阻矩等参数对自同步运动的影响。

EA mounted on the either end of rotor shaft can generate impulse excitation force or simple harmonic excitation force with different frequency.

电磁激振器安装在转子的伸出端，产生脉冲激励力或不同频率的简谐激励力。

High frequency screen is made up of vibration generator, wet pulp distributor, deck base, pendulum spring, screen cloth and other parts.

高频筛由激振器，矿浆分配器，筛框，机架，悬挂弹簧和筛网等部件组成

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。