含零漂的遥测加速度振动信号时域积分方法研究

Research of the Telemetry Acceleration Vibration Signals with the Zero Drift in Time Domain Integration

摘要:

提出通过遥测加速度振动信号时域数值积分和最小二乘相结合的方法消除零漂对积分结果精度的影响,即采用最小二乘原则对加速度振动信号时域数值积分结果根据其包含的趋势项形式进行多项式拟合,获得修正参数,进一步对积分结果进行修正,获取遥测速度和位移振动信号的修正值。方法在仿真信号上进行了应用,修正结果和真实结果的误差较小,结果精度较高,说明方法的有效性,在此基础上将方法在遥测加速度振动信号的处理上进行了应用,鉴于方法模型的在仿真信号上的有效性,可以推断获取的遥测速度和位移振动信号的修正结果具有较高的置信度。

Abstract:

Proposed by telemetry acceleration vibration signals in time domain numerical integration and least-squares method to eliminate the influence of a combination of zero-drift precision of the results of the integration, namely the principle of least squares acceleration vibration signals in time domain numerical integration results in the form of trend items it contains according to polynomial fitting, obtain correction parameters, further integration results were corrected to obtain a correction value telemetry vibration velocity and displacement signals. Method on the application of the simulated signal error correction results and actual results is small, the results of high precision and validity of the method described, on this basis, the method in dealing with telemetry vibration acceleration signal is applied, in view of the method on the validity of the model simulation signal can be inferred telemetry speed and vibration displacement signal correction results obtained with a higher degree of confidence.