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Spline interpolation compensation method for explosive separation impact data

A technology of explosion separation impact and spline interpolation, which is applied in the field of data processing, can solve the problems of large errors and achieve the effect of increasing measurement costs

Inactive Publication Date: 2015-05-06
BEIJING AEROSPACE INST OF THE LONG MARCH VEHICLE +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This technology allows for faster measurements without changing any expensive or complicated devices that are necessary. Instead it uses interpolations instead of directly measuring values from previous steps. Additionally this technique could help identify potential issues with future events such as collision between vehicles on different roads.

Problems solved by technology

Technological Problem: The technical problem addressed in this patented text relates to measuring exploding separations caused by firearms during launches or other operations where there are no external forces that can affect their behavior. Current methods have limitations in terms of sample rates needed to achieve accurate results, which makes it difficult to determine whether any damage occurs beforehand.

Method used

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  • Spline interpolation compensation method for explosive separation impact data
  • Spline interpolation compensation method for explosive separation impact data

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0030] Spline interpolation is a good interpolation method for dynamic data interpolation, and has better performance than other interpolation functions: smooth, non-oscillating, and close to the original data waveform. attached figure 1 Shown is the interpolation result of a single-degree-of-freedom second-order system function with a damping coefficient of 0.05, including linear interpolation, polynomial interpolation and cubic spline difference. It can be seen from the figure that the cubic spline interpolation almost coincides with the actual function curve, which is the interpolation function with the best interpolation effect. Therefore, this program uses cubic spline interpolation, and the specific steps are as follows:

[0031] A spline interpolation compensation method for explosion separation impact data, comprising the following steps:

[...

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Abstract

The invention discloses a spline interpolation compensation method for explosive separation impact data. The method includes the steps that an interpolation function is constructed, impact measurement data are extracted and preprocessed, the interpolation function is established, a time point needing interpolation is calculated according to an even sampling principle, and an approximating value of an impact signal on the time point is calculated according to the interpolation function acquired through the third step. By the adoption of the method, hardware equipment of a measurement system does not need to be changed, the advantage that measurement cost is not increased is achieved, the interpolation function only needs to be selected according to the measured data, digital interpolation is then conducted, and therefore the two types of errors can be reduced simultaneously. The spline interpolation compensation method can also be used for reference in impact analysis of other types.

Description

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Claims

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Application Information

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Owner BEIJING AEROSPACE INST OF THE LONG MARCH VEHICLE
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