| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for detecting axial torsional vibration of a turbogenerator capable of individually calculating torsional torque acting on each part of a rotary axis system including a turbine just by detecting rotation speed differential of the rotary axis of a generator. <P>SOLUTION: In the turbogenerator combining the generator 1 and the turbines 2 - 5 with the rotary axis 6, a rotation angle sensor composed of a gear 7 and a electromagnetic pick up 8 is provided on only the rotary axis 61 of the generator 1. Pulse signal P output from the sensor is input to a rotation speed differential calculation part 9 to calculate rotation speed differential Δω. The same is supplied to an operation processing part 10. The rotation speed differential Δω is processed according to an operation model based on a simultaneous equations of motion simulating a rotary axis system of the turbogenerator and torsional torque T (T12, T23, T34, T45) at each part of the rotary axis 6 is calculated. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
