CABLE MALFUNCTION DIAGNOSING METHOD CAPABLE OF IMPROVING THE RELIABILITY OF MALFUNCTION DIAGNOSIS AND A SYSTEM THEREOF

摘要

PURPOSE: A cable malfunction diagnosing method and a system thereof are provided to efficiently remove the noise of a cable through a signal processing operation.;CONSTITUTION: A cable malfunction diagnosing system applies an applying signal of a chirp signal type to an applying point(S200). The system acquires an acquisition signal from an acquisition point(S202). The system calculates an instantaneous frequency of the acquisition signal(S210). The system calculates a cable quality index based on a difference value between a frequency average of the applying signal and an average value of the instantaneous frequency(S214).;COPYRIGHT KIPO 2013;[Reference numerals] (AA) Start; (BB) End; (S200) Applying an applying signal at an applying point; (S202) Acquiring an acquisition signal at an acquisition point; (S204) Calculating an analytic signal by applying Hilbert-transform technique to the acquisition signal; (S210) Extracting instantaneous frequency components; (S212) Removing disturbance; (S214) Calculating a cable quality index; (S216) Determining the malfunction of a cable