| 摘要 |
1,042,623. Automatic balancing. KISTLER INSTRUMENTS A.G. June 11, 1963 [June 18, 1962; July 27, 1962; Feb.20, 1963], No. 23178/63. Heading G3R. In a system for automatically balancing a body, a portable detector, attached to a machine by which the body is rotated, responds to unbalance by mechanical resonance producing electrical signals which control a portable electromagnetic tool actuator, attached to the machine by which the body is rotated, so that the body is balanced by periodic operation of the tool to remove material from a portion of the periphery of the body. As described, the detector, which may be mounted on the bearing for the rotating body, is a magnet at the end of an adjustable reed so that mechanical resonance causes it to vibrate relative to a coil the output of which is amplified, modified by logarithmic feedback, and applied to a Schmitt-trigger circuit producing a rectangular pulse output for application to the tool actuator. The latter is located around the axis of rotation of the body in such a position relative to the detector as to allow for the time constant of the control system. The detector may, alternatively, be mounted on the bed of the machine and a phase shifter introduced into the circuit to allow for the time constant of the system. |
