Patent ID: 6829934
Filing Date: 2004-12-14
Classification: G01M

Abstract:
A method of simultaneously balancing mechanically coupled, synchronously rotating rotors in a paper machine, comprising the steps of:providing rotors having different axes of rotation relative to one another, said rotors together defining a rotor group to be balanced, each said rotor having at least one of a bearing plane and an other measuring plane associated therewith, said other measuring plane significantly describing vibrations of said each said rotor, said rotors within said rotor group together having a number of different angular velocities about corresponding said axes of rotation relative to one another; equipping at least one said rotor of said rotor group with at least one vibration pickup in at least one of each said bearing plane and said other measuring plane thereof; installing as many impulse and phase transmitters in said rotor group as are provided said number of different angular velocities about said corresponding axes of rotation associated with said rotors within said rotor group; recording simultaneously at least one pertaining vibration signal and a pertaining speed signal, with regard to a respective one of each said bearing plane and said other measuring plane; determining for each said bearing plane and said other measuring plane the coefficients of influence thereof by applying a method of coefficients of influence and setting defined test imbalances; generating at least one corresponding matrix of coefficients of influence; and determining a counterbalance mass distribution from said at least one corresponding matrix of coefficients of influence for every operating balance plane of said rotor group, each said bearing plane and said other measuring plane defining a corresponding test balance plane.