Optimization study of pipeline pulsation noise feedforward active control algorithm
The noise active control technology collects the noise source signal as input through the sensor,and the out-put signal of the adaptive algorithm drives the actuator to offset the original noise,and the control effect largely depends on the performance of the control algorithm.At present,there is little research on active control of liquid pipeline pulsation,and it is necessary to design an algorithm for active control of liquid pipeline pulsation noise.The principle of the traditional broadband feedforward FxLMS algorithm is analyzed,and the line frequency tracking algorithm is designed for peak fre-quency extraction control for the low frequency line spectrum characteristics of pipeline pulsation noise;the acoustic feed-back compensation algorithm is designed to eliminate the coupling interference caused by the actuator to the reference signal.The design test compares the pulsation attenuation effect of the traditional algorithm and the optimized algorithm,and the results show that the optimized algorithm has the attenuation effect on the pulsation line spectrum of different frequencies,and improves the pulsation attenuation by about 2 dB compared with the broadband feedforward algorithm.
pulsation active controlcontrol algorithmacoustic feedback compensation
万方数据
维普
