METHOD harmonic analysis of periodic signals MULTIFREQUENCY SUBMITTED digital readout

摘要

method u043cu043du043eu0433u043eu0447u0430u0441u0442u043eu0442u043du044bu0445 harmonious analysis of periodic signals, the digital u043eu0442u0441u0447u0435u0442u0430u043cu0438, including the formation of two reference signals, u043eu0442u043bu0438u0447u0430 u044eu0449u0438u0439u0441u00a0, as reference signals ZSIN (t) and Zcos (t) using the lattice functions:;,;,;the host in its period of a fixed number of values m (m = 4, 5, 6,...) in the certain moments of time, by the formula:;,;u043du0430u0445u043eu0434u00a0u0442 point (jtk), further from the analyzed signal choose only those u043eu0442u0441u0447u0435u0442u044b that fall in the times (jtk) with different frequency reference signal j, per u0435u043cu043du043eu0436u0430u044eu0442 u0437u043du0430u0447u0435u043du0438u00a0 test signal and reference points (jtk), u0441u0443u043cu043cu0438u0440u0443u044eu0442 received u0437u043du0430u0447u0435u043du0438u00a0 in period t. the test signal, the counting u0430u043cu043fu043bu0438u0442u0443u0434u043du043eu0435 kn u0430u0447u0435u043du0438u0435 j th harmonic u0441u043eu0441u0442u0430u0432u043bu00a0u044eu0449u0435u0439 formula:;,;where nm is the number of points in the interval of the test signal leaked to the times (jtk);the calculated phase angle j th harmonic u0441u043eu0441u0442u0430u0432u043bu00a0u044eu0449u0435u0439 formula:;,;the u0437u043du0430u0447u0435u043du0438u00a0u043c u0430mj, j and j u0441u0443u0434u00a0u0442 to co create the test signal (f (t).