驱动设计的难点在于必须保持激振信号幅度在合适的范围内，过大过小都不能驱动一次仪表正常工作。
The difficulty lies on keeping the amplitude in a proper range to activate the primary instrument, neither too high nor too low.
在柴油机使用过程中技术状态的改变将导致激振力发生不同的变化，因此测量机体激振信号有利于对柴油机技术状态进行监测。
The exciting forces will change when the technical states of diesel engine change. So to measure the body vibration can felicitate the monitoring of diesel engine technical states of.
设计出传感器输入输出信号调理电路和试验台架液压激振系统、磁流变阻尼器控制器的功率放大电路。
Design the signal adjust circuit for sensor, and the power amplification circuit for the hydraulic pressure system of test platform and the controller of magnetorheological dampers.
激振系统信号源的频率、幅度和波形应该能够任意调节。
The frequency, the amplitude and the waveform of the signal source should be controllable.
为了保证远场信号的相位与激振力的相位一致，应当控制激振力的相位。
Output force phase should be controlled so as to get the far field signal inphase with the output force phase.
它比常用的球击法具有激振能量大，信号接收效果佳等优点。
It has some advantages of larger exciting energy and higher efficiency in receiving signals over the conventional ball-shooting method.
本文基于外加周期激振力信号作用首次对双杆摆机构的混沌运动进行了有效的控制。
In this paper, the chaotic motion of a double-pendulum is suppressed efficiently based on the method of periodic force.
模态测试时，利用单点(多激振点)激励多点响应模态试验分析方法来获取完整模态参数，引入相关函数分析测试信号的可靠性。
During the model test, integrity modal parameters are obtained via the single-input multi-output analysis method. The reliability of tests signals is also evaluated by the coherence function.
模态测试时，利用单点(多激振点)激励多点响应模态试验分析方法来获取完整模态参数，引入相关函数分析测试信号的可靠性。
During the model test, integrity modal parameters are obtained via the single-input multi-output analysis method. The reliability of tests signals is also evaluated by the coherence function.
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