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检波器的假频是借助支撑运动体对支座弹簧的水平运动作为谐振来模拟的。假定弹簧臂是单臂振动型的,应用凯斯梯里诺法可以获得它的分析解。在分析过程中,讨论了弹簧的形状。因为所用的弹簧有着各种各样的截面,使用凯斯梯里诺法不再是方便的了。对于一般的设计,一维分析法只是一种近似的方法。在理论研究基础上,为了试验,设计了旋转定位装置和平移定位装置。在频率域内,低噪声定位装置和相位平均技术可以提供振幅和假频谐振。最后,用旋转定位装置所作的试验与假频预测的近似方法作了比较。
The false frequency of the detector is modeled as a resonance by means of supporting the body of motion to the horizontal movement of the bearing spring. Assuming that the spring arm is a one-armed vibration type, its analytical solution can be obtained using the Kessler-Renault method. During the analysis, the shape of the spring was discussed. Because of the wide variety of cross sections used, the use of the Castiglione method is no longer convenient. For a general design, one-dimensional analysis is only an approximation. On the basis of theoretical research, in order to test, a rotary positioning device and a translation positioning device are designed. In the frequency domain, low-noise positioners and phase-averaging techniques provide amplitude and aliasing resonances. Finally, the comparison between the experiment done by the rotary positioning device and the approximate method of the prediction of the aliasing frequency is made.