Method for searching maximum absolute value of reciprocal noise-containing fitted square waves

Abstract

The invention discloses a method for searching the maximum absolute value of reciprocal noise-containing fitted square waves. The method includes the following steps that: a sampling frequency is set, and equal-duration array acquisition is performed on the noise-containing fitted square waves, so that an array {x} can be obtained, and the length of the array {x} assuredly cover 4 to 5 noise-containing fitted square waves; absolute value traversal is performed on the array {x}; and all data in the array {x} which has been subjected to absolute value traversal are sequenced according to a small-to-large order, and the last datum is the maximum absolute value in all the data in the array {x}. With the method of the invention adopted, the maximum absolute value of the reciprocal noise-containing fitted square waves of which the minimum period is Td can be automatically determined, and the misjudgment rate of a computer program can be decreased, and the success rate of search can be improved. The method is applied to occasions presenting a reciprocal noise-containing fitted square wave form, such as a metro platform screen door maximum kinetic energy test system.

Description

technical field [0001] The invention relates to a search method for the maximum absolute value of a mutually reversed noise-containing quasi-square wave, belonging to the technical field of signal acquisition and analysis. Background technique [0002] For the reciprocal and anti-noisy quasi-square wave, because it contains high-frequency burrs and is not smooth, and the amplitude is reversed and alternated to present a non-monotonic change, it is easy to make mistakes when it is required to automatically determine the maximum absolute value in signal acquisition and analysis. sentenced. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the prior art, to provide a search method for the maximum absolute value of the mutually reversed noisy quasi-square wave, to solve the problem that the mutually reversed noisy quasi-square wave has high-frequency burrs and is not smooth, and the amplitude The value alternates opposi...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art, to provide a search method for the maximum absolute value of the mutually reversed noisy quasi-square wave, to solve the problem that the mutually reversed noisy quasi-square wave has high-frequency burrs and is not smooth, and the amplitude The value alternates in reverse and presents a non-monotonic change. When it is required to automatically determine the maximum absolute value, it is prone to misjudgment technical problems