抄録
This is an attempt to explain the relation between “frictor” designed by the authors and the properties of slivers. The frictor is a trumpet-type tube which controls bundles of fibers.
(1) The static resistance force of frictors of various shapes against slivers was measured with a magnetic strain meter by passing slivers through the frictors without fiber slippage.
(2) A tentative plan of frictor-using sliver irregularity testers of two types is described. These testers have been devised on trial to express in two ways resistance force of the frictors against sliver-drawing: (a) by converting the resistance force of a frictor into a displacement variation of a spring and (b) by converting the resistance force into a current variation of a magnetic strain meter.
(3) An automatic frictor-using controller of sliver irregularity has been devised on trial and tried by the open-loop system on a card. The performance of this controller has been analysed theoretically and experimentally, and the variations in its controlling effect are discussed.
