Research and design about a system of harmonic detection based on ARM and HHT

摘要

As we all know FFT (Fast Fourier Transform) can be used analyze and calculate linear and stationary signals, while signals in reality are always nonlinear and transient, so we use HHT (Hilbert-Huang Transform) to detect them. In the past, scholars detect harmonics by applying ARM accompany with FFT. In this article, we use the development board S3C6410 - as hardware platform. Our processor is ARM, while the main algorithm is HHT.