| 摘要 |
PROBLEM TO BE SOLVED: To separate, by a simple configuration, rotation input including high frequency component and low frequency component into rotation output including only low frequency components and rotation output including only high frequency component.SOLUTION: A separator for high frequency component and low frequency component comprises a hydraulic pump mechanism 23 including: a rotary cam plate type hydraulic pump 24 having a rotary cam plate 25 and a piston 27 that advances or retracts by the rotation of the rotary cam plate, thereby discharging operating oil; a pressure detection chamber 32 connected to the discharging port 31 of the rotary cam plate type hydraulic pump; and an orifice 28 connected to the exhaust port 32a of the pressure detection chamber. The separator further comprises a pressure sensor 37 that detects oil pressure in the pressure detection chamber 32. The rotation input in which high frequency components and low frequency components are mixed is subjected to a low frequency band passage filter, thereby separating low frequency rotation components. The rotation input is transmitted to the rotation shaft 25a of the rotation cam plate 25. The operating oil expelled from the discharging port 31 of the rotary cam plate type hydraulic pump is expelled from the pressure detection chamber 32 and orifice 28. Oil pressure in the pressure detection chamber 32 is detected and output, thereby separating a pressure signal including only a high frequency component, from the rotation input. |
