Proposed digital, auto ranging, self calibrating inertial sensor

P. Swanson, C. Tally, R. Waters
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引用次数: 4

Abstract

A novel means of measuring inertial force is proposed which converts the spatial displacement measurement of a conventional mass-on-a-spring accelerometer to a time interval measurement by harmonically oscillating the mass-on-a-spring and creating digital triggering events when the mass passes known displacement points. By curve fitting the measured time intervals into the sinusoidal nature of the harmonic oscillator, it is possible to measure acceleration without the need of adjustable parameters (such as bias and scale factor) derived by calibration. Being a function of the accuracy of the time interval measurement, the device sensitivity varies with resonant frequency, clock resolution, and oscillation amplitude. The resonant frequency of the harmonic oscillation and the oscillation amplitude can be adjusted in real time to optimize performance for a specific dynamic range.
提出数字式、自动测距、自校准惯性传感器
提出了一种新的惯性力测量方法,该方法将传统的弹簧质量加速度计的空间位移测量转换为时间间隔测量,方法是通过弹簧质量的谐波振荡,并在质量经过已知位移点时产生数字触发事件。通过将测量的时间间隔曲线拟合到谐波振荡器的正弦性质中,可以测量加速度,而不需要校准导出的可调参数(如偏置和比例因子)。作为时间间隔测量精度的函数,器件灵敏度随谐振频率、时钟分辨率和振荡幅度而变化。谐波振荡的谐振频率和振荡幅度可以实时调节,以优化特定动态范围内的性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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