The Processing Method of Acceleration Time Domain Truncated Signal Waveform Reproduction

Abstract

The invention discloses a processing method for waveform reproduction of accelerated velocity time-domain truncated signals. The method includes the following steps: 1) calculation processing is performed on accelerated velocity time-domain truncated signals, so that velocity time-domain truncated signals and displacement time-domain truncated signals are obtained; 2) an end accelerated velocity value, an end velocity value and an end displacement value are extracted; 3) with the with the three parameter values adopted, displacement zeroing compensation signals are generated through using an attenuation cosine function; 4) zeroing displacement complete signals are generated; 5) velocity zeroing compensation signals and accelerated velocity zeroing compensation signals are obtained; and 6) zeroing velocity complete signals and zeroing accelerated velocity complete signals are generated. According to the processing method of the invention, based on original signals, a part of signals are compensated, so that accelerated velocity signals can be gradually zeroed quickly and accurately, and at the same time, it can be ensured that velocity signals and displacement signals corresponding to the compensated signals are gradually zeroed; and therefore, the compensated accelerated velocity time-domain truncated signals can be identified through a vibration control instrument so as to drive a vibration table to perform waveform reproduction.

Description

technical field [0001] The invention relates to the technical field of dynamic environment tests, in particular to a processing method for reproducing acceleration time-domain truncated signal waveforms. Background technique [0002] The dynamic environment test can assess whether the structure or equipment can withstand the expected dynamic environment (vibration, impact, etc.), and is an effective means to identify whether the structure can maintain its integrity or whether the performance and accuracy of the equipment have been reduced. The dynamic environment test is of great significance to ensure the structural strength of the product system, the reliability of the electronic circuit, and the safety of the control system. [0003] The acceleration time domain waveform reproduction test is a very important type of test in the dynamic environment test. It refers to reproducing the specified acceleration time domain waveform with high precision on the shaking table in the...

AI Technical Summary

Problems solved by technology

At this time, even with the Figure 5 The signal is basically zero-filled according to the original sampling frequency, so that the final acceleration is zero, and it cannot be guaranteed that the final velocity and final displacement corresponding to the acceleration truncated zero-filling signal are zero at the same time, and it still cannot be identified by the vibration controller and driven by the vibration table for physical implementation. Waveform reproduction

[0006] However, in the actual signal acquisition process, the sudden truncation of the acquisition signal occurs from time to time due to various accidents, which leads to the fact that there is no commercial vibration controller that can directly implement waveform reproduction.

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