Device and method for testing high-frequency on-load frequency catachrestic of large-size hydraulic cylinder
A technology of frequency characteristics testing and hydraulic cylinders, which is applied in fluid pressure actuation devices, fluid pressure actuation system testing, mechanical equipment, etc., and can solve problems such as sensor damage, unsuitable high-frequency detection range, and difficulty in signal reading and processing
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[0063] A large-scale hydraulic cylinder high-frequency load frequency characteristic testing device and testing method thereof. The test device as figure 1 As shown: the hydraulic pump 18 is coaxially connected with the motor 19, the oil suction port of the hydraulic pump 18 communicates with the oil tank 16, the oil pressure port of the hydraulic pump 18 communicates with the P port of the electro-hydraulic servo valve 20, and the A port of the electro-hydraulic servo valve 20 Or the B port communicates with the rodless cavity of the hydraulic cylinder 7 , and the T port of the electro-hydraulic servo valve 20 communicates with the oil tank 16 . The oil pressure port of the hydraulic pump 18 communicates with the P port of the three-way proportional pressure reducing valve 1, the A port of the three-way proportional pressure reducing valve 1 communicates with the rod chamber of the hydraulic cylinder 7, and the T port of the three-way proportional pressure reducing valve 1 I...
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