| 摘要 |
PURPOSE:To reduce correcting plates by determining two component of force vectors in such a way that correcting unbalance vectors come within the specific parts in accordance with the unbalance vectors of arbitrary two faces and determining the sum thereof. CONSTITUTION:The signals from right, left pickups 3, 4 are inputted to an arithmetic circuit 5, and unbalance vectors in the counter weights 2L, 2R of a crank shaft 1 are measured. The signal from the circuit 5 and the signal from a reference signal transmission circuit 6 are inputted to component vector operating circuits 7, 8, from which the signals corresponding to two component of force vectors Lx, Ly, Rx, Ry are outputted, and the two component of force vectors are so determined by a calculating circuit 9 that correcting unbalance vectors come within specific parts 21L, 21M, 21M, 21R. Following to this, correcting unbalance vectors L', M, R' are instructed by a polar coordinate transformation circuit 10 for component of forces or the like. The correcting places are reduced by half in this way. |
