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(200 1) EA T ON CORPORA TIO NCFlowS p o o l P o s i t i o nMax imu m Flow揇 e adb and ? Regio n揨 ero? Ov erlap Overla pFi gure 14 14 Flow v s spo ol po sition with ov erlap and zero lapCO PYR IGHT (200 1) EA T ON CORPOR A TIO NCSpool PositionI n p u t S i g n a l+H y s t e r e s i sI n c r e a s i n gS i g n a lD e c r e a s i n gS i g n a lI d e a l R e s p o n s eFigure 1415 The ef fect of hystersis on valve spool positionCO PYR IG H T (20 01) EA T O N CO RPO RA T IO NC