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光线示波器振子的阻尼率是一个重要的特性参数,对振子的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之后,提出用脉冲响应曲线标定的新方法,在理论上进行了分析计算,并对实现脉冲激励的电路、阻尼率的计算方法,以及对实验结果的数据处理和误差分析作了定量计算。本方法提高了标定精度,扩大了标定范围,特别是解决了大阻尼率的标定问题。
The damping rate 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, we analyzed the shortcoming and existing problems of using the step response and the sine response to calibrate the damping rate of the vibrator. After that, we proposed a new method of calibrating the impulse response curve, and theoretically analyzed and calculated the circuit, the damping rate The calculation method, as well as the experimental results of data processing and error analysis were quantitatively calculated. The method improves the calibration precision and enlarges the calibration range, especially solves the calibration problem of large damping ratio.