Abstract: A balancing machine is used to measure the unbalance of a rotor by obtaining a first reading representative of the vector sum of the unbalance of the rotor and an amount comprising the product of the mass of the rotor and its eccentricity relative to the axis of the balancing machine. A second reading is obtained after shifting the rotor 180.degree. relative to the balancing machine while maintaining the same eccentricity, and the second reading is then subtracted from the first to obtain a final reading representative of the true unbalance of the rotor without influence of its eccentricity relative to the balancing machine. The final reading is used to effect a true balance of the rotor, and an arrangement is provided to accomplish such balance.

Abstract: The unbalance angle is transformed into units of length or into non-dimensional units which are correlated to the body to be balanced, either to a circumference thereof, or to a characteristic scale of the body to be balanced. The unbalance position may then be displayed in such units. The apparatus for performing the method includes a transformation computer which transforms the measured angular value through at least one operant. Preferably, the apparatus also includes an indicator device for units of length or for non-dimensional units or angle representing units.

Abstract: The present circuit arrangement is, for example, useful for producing reference signals in response to the rotation of a body such as a wheel or rotor to be balanced. Source signals are produced in response to the rotation of said body. Circuit means are provided for handling and comparing the source signals in such a manner that the reference signals are provided at an output terminal in response to the occurrence of the center of a source signal or in response to the maximum of a source signal. The transmittal may also be controlled in response to the center and the maximum of a source signal.

Abstract: The present circuit arrangement is, for example, useful for producing reference signals in response to the rotation of a body such as a wheel or rotor to be balanced. Source signals are produced in response to the rotation of said body. Circuit means are provided for handling and comparing the source signals in such a manner that the reference signals are provided at an output terminal in response to the occurrence of the center of a source signal or in response to the maximum of a source signal. The production of pulses may also be controlled in response to (i.e., at) the center and the maximum of a source signal.

Abstract: The present display device combines a liquid crystal display panel with a transparent dial for example having a polar coordinate system on which the information shown by the panel may be displayed with regard to its value and location or angular position. This type of display is especially suitable for displaying unbalance informations of a body to be balanced. In the present process an unbalance representing signals are separated into horizontal and vertical components, which are then supplied respectively to the row and column electrodes of said liquid crystal display device. The dial itself may also be constituted as a liquid crystal display panel. The row and column electrodes may be provided in several sets for simultaneously displaying several unbalance informations, for example, relating to different planes in a body to be balanced.