ELECTROMAGNETIC FEEDER, MEASURING INSTRUMENT, AND COMBINATIONAL MEASURING SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide the electromagnetic feeder, measuring instrument, and combinational measuring system which eliminate the need to accurately adjust the natural frequency of the electromagnetic feeder and can be constituted at low cost. ;SOLUTION: The electromagnetic feeder 3, which is equipped with an electromagnetic coil 39 connected to an excitation power source 60 and a conveyance part 37 supported in an oscillatory state and conveying articles, excites the conveyance part 37 with the electric power supplied from the excitation power source 60 to the electromagnetic coil 39 to supply articles downstream, and controls the amplitude of the conveyance part 37 to control the quantity of downstream supply, controls the quantity of the downstream supply by controlling the amplitude of the conveyance part 37 by controlling the voltage applied from the excitation power source 60 to the electromagnetic coil 39.;COPYRIGHT: (C)2000,JPO