CONTROLLING METHOD OF HYDRAULIC DRIVING SYSTEM

摘要

PURPOSE:To effectively compensate a dead band regardless of the using condition by varying control signal values that control the hydraulic output of a hydraulic pump only by a set offset amount when the number of hydraulic pumps are to be changed. CONSTITUTION:When the number of hydraulic pumps being used are to be changed, a lifting and lowering drive control signal V is to vary only by a set offset amount DELTAV. By doing so, a dead band can be effectively compensated regardless of the using condition because the drive control signal value will jump from point P1 to point P2 on a characteristic line C0 and the range of its staying on the dead band R0 can be lessened.