procedure for the rules of the differenzdrehzahl and at least two waves of differenzdrehwinkels

摘要

A method of measuring and compensating revolution rate and angular position differences of two or more shafts is esp. for propeller drive shaft control of multiple screw ships. It enables regulation shaft revolution rates to the same value and compensation of mechanical oscillations simply and reliably. Electronic pulse detectors prod. measurement values which are fed to an electronic measurement and control device. The difference signal derived from the detector outputs is used to adjust the torque applied to the shafts for a given drive system power output by varying the propeller blade incidence angle. The torque may alternatively be controlled by varying the power supply generator power, the load of an electrical drive motor, the slip of an electrical slip coupling, or the effectiveness of an eddy current brake where fixed propellers are employed.