| 摘要 |
PURPOSE:To load a variation torque to a high frequency band by executing a load control of a variation torque of a load testing machine by a specified load device. CONSTITUTION:An input shaft 2 of a load testing machine is connected to a machine to be tested, namely, a crank shaft 17 of an engine 16. A signal inputted from a signal generator 12 operates a servo-valve 9 through a servo-controller 13, presses a disk pad 7 of a damping tool 8 against a disk 4 by an oil pressure supplied from a hydraulic unit 14, also vibrates the disk pad 7 in the axial direction, and loads a variation torque to the disk 4. On the other hand, a detecting signal from a torque detector 11 is fed back to a controller 13, a correcting signal is sent to a load device 10, and a load is controlled. The hydraulic servo-type load device 10 having a good frequency chacacteristic is used, therefore, a variation torque to a higher frequency band is loaded faithfully. |
