To provide a less-complicated and costless resistive torsional mode damping system which controls shaft damage due to torsional vibration to the minimum.
The resistive torsional mode damping system (10) for a shaft (12) of a machine (14) includes a sensor (16) configured for sensing a signal representative of torque on the shaft, a controller (18) configured for using the sensed signal for detecting a presence of a torsional vibration on the shaft corresponding to a natural frequency of the shaft and for generating control signals for damping the torsional vibration, and a damper (20) including a damping converter (22) and a resistor (24) coupled to a DC output of the damping converter, the damping converter being coupled to the machine through a power bus (26) and having a power rating on the order of less than or equal to about five percent of a nominal power of the machine.
COPYRIGHT: (C)2008,JPO&INPIT
Hirokazu Ogura
Toshihisa Kurokawa
Arakawa Satoshi