Method and apparatus for dynamically determining unbalance of rotors

Claim 1

THE METHOD OF SENSING UNBALANCE OF ROTORS IN TWO COORDINATE DIRECTIONS OF AT LEAST TWO REFERENCE PLANES AND TRANSFORMING THE MEASURED UNBALANCE VALUES INTO TWO COORDINATE CORRECTION VALUES APPLICABLE IN ANOTHER PLANE, WHICH COMPRISES THE PROCEDURE OF ROTATING THE ROTOR TO PRODUCE OSCILLATIONS DUE TO ROTOR UNBALANCE, TRANSDUCING THE OSCILLATIONS INTO RESPECTIVE ALTERNATING VOLTAGES INDICATIVE OF UNBALANCE IN SAID RESPECTIVE REFERENCE PLANES, GENERATING AN ALTERNATING PHASE-REFERENCE VOLTAGE SYNCHRONOUS WITH THE ROTOR ROTATION HAVING A PREDETERMINED FIRST PHASE POSITION RELATIVE TO THE ROTOR, IMPRESSING THE REFERENCE VOLTAGE AND ONE OF THE TRANSDUCER VOLTAGES UPON A VOLTAGE MULTIPLIER AND IMPRESSING THE REFERENCE VOLTAGE AND THE OTHER TRANSDUCER VOLTAGE UPON ANOTHER VOLTAGES MULTIPLIER TO OBTAIN TWO PRODUCT VOLTAGES WHICH HAVE EACH A DIRECTVOLTAGE COMPONENT OF REVERSIBLE POLARITY, IMPRESSING EACH PRODUCT VOLTAGE OF POSITIVE POLARITY ONLY UPON ONE OF TWO RESPECTIVE RECEIVING MEANS CORRELATED TO SAID TWO RESPECTIVE REFERENCE PLANES, WHEREBY THE RESPONSE OF THE TWO RECEIVING MEANS IS INDICATIVE OF THE UNBALANCE CORRECTION REQUIRED IN ONE OF THE TWO COORDINATE RADIAL DIRECTIONS IN EACH OF SAID RESPECTIVE REFERENCE PLANES WHEN BOTH PRODUCT VOLTAGES ARE POSITIVE; AND IMPRESSING, WHEN THE PRODUCT VOLTAGES ARE NEGATIVE, THE LARGER ONE OF THE NEGATIVE PRODUCT VOLTAGES UPON ANOTHER RECEIVING MEANS, AND SIMULTANEOUSLY IMPRESSING SAID LARGER NEGATIVE PRODUCT VOLTAGE ADDITIVELY UPON THE RECEIVING MEANS FOR THE REFERENCE PLANE OF THE SMALLER NEGATIVE PRODUCT VOLTAGE, WHEREBY THE RESPONSE OF THE OTHER RECEIVING MEANS IS INDICATIVE OF THE UNBALANCE CORRECTION REQUIRED IN THE ONE OF THE TWO COORDINATE RADIAL DIRECTIONS OF THE OTHER PLANE, AND DUPLICATING THE PROCEDURE WHILE GENERATING THE ALTERNATE PHASE-REFERENCE VOLTAGE SYNCHRONOUS WITH ROTOR ROTATION AT A SECOND PREDETERMINED PHASE POSITION DISPLACED FROM THE FIRST