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光线示波器振子的阻尼率(§值)是一个重要的特性参数,对振子动态特性有很大影响。本文分析了采用阶跃响应和正弦响应标定振子阻尼率的缺点和存在的问题,提出了用脉冲响应曲线标定的新方法,並从理论上进行了分析。对实现脉冲激励的电路、阻尼率的计算方法、实验结果的数据处理和误差进行了理论分析和定量计算。本方法提高了标定精度,扩大了标定范围,特別是解决了大阻尼的标定问题。
The damping rate (§ value) of a light oscilloscope oscillator is an important characteristic parameter, which has a great influence on the dynamic characteristics of the oscillator. In this paper, the shortcoming and existing problems of using the step response and the sine response to calibrate the damping rate of the vibrator are analyzed. A new method of calibrating the impulse response curve is proposed and analyzed theoretically. The circuit to realize the pulse excitation, the calculation method of the damping rate, the data processing and the error of the experimental results are theoretically analyzed and calculated quantitatively. The method improves the calibration precision and enlarges the calibration range, especially solves the calibration problem of large damping.