DEVICE FOR ESTIMATING ANGULAR SPEED, DEVICE FOR ESTIMATING ENERGY, AND DEVICE FOR ESTIMATING VARIATION BETWEEN CYLINDERS

摘要

A device for detecting angular speed, for estimating the angular speed of a compressor rotor (2) having a plurality of blades (22), is provided with a passage detection device (5) for detecting the passing of each blade through a predetermined angle position in a housing (3) for accommodating the compressor rotor, and a calculation device (6) for calculating the angular speed of the compressor rotor. The calculation device is provided with an angular speed calculation unit for calculating the time interval taken for at least two specific pairs of blades among the plurality of blades to pass through the predetermined angle position on the basis of the output of the passage detection device, and calculating the instantaneous angular speed of the compressor rotor on the basis of the calculated time interval.