Online identification method for gas-liquid two-phase-flow flow pattern in gathering and transportation-vertical pipe system

摘要: The invention discloses an online identification method for a gas-liquid two-phase-flow flow pattern in gathering and transportation-vertical pipe system. is used pre-processing vertical top pressure signal to be identified of the system; characteristic parameter vector comprising three main components extracted through statistical calculation man component analysis; then input into multi-class classifier pre-trained least squares support machine, so that attribution four basic classes including first type serious section plug flow, second transiting flows, mixed vibration stable flowing; when belongs flowing, parameters two frequency regions processed are types trained classifiers determine final attribution. has high rate, strong portability good field adaptability, can effectively meet requirements.