Improved fast-ICA based harmonic detection algorithm

In order to increase the speed and accuracy of Fast-ICA algorithm on harmonic detection. The original Fast-ICA blind source separation algorithm had been improved so that iterations had been reduced; the convergence rate of the algorithm had been raised, as well as the mathematical justification and simulation study had been conducted. The study had showed that the algorithm average speed increased by 37% for the simple harmonic mixed signal and approximate the harmonic wave in the power grid signal detection, in sampling frequency for 7500 Hz, sampling points for 920 point. The algorithm reduce the iteration times and improve the algorithm convergence speed, accuracy has been improved greatly.