KEYWORDS: Liquids, Signal analyzers, Signal processing, Mechanical engineering, Vibration control, Frequency conversion, Fluctuations and noise, Servomechanisms, Sensors, Agriculture
Hydraulic exciting system consisted of pipeline and wave-exciter has been constructed to study hydraulic
pipeline vibration control laws. Through controlling the inverter frequency conversion, opening and
closing of the shock device produce periodic vibration in hydraulic pipe.The excitation test system is
established. The vibration signals on different point of pipeline have been collected and analyzed to come
to the law of pipeline vibration. The results show that pipeline vibration frequency decreases with the
system pressure increaseing in the same excitation frequency; when frequency and pressure are
determined, the vibration waveforms of different point on pipe are the same, almost nonexistent phase
differences, but they are inconsistent with amplitudes on different points. Pipe vibration close to the
hydraulic cylinder is slightly intenser than that near the wave-exciter.
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