Hydraulic pump control system

Details Hydraulic pump control system Hydraulic pump control system

F - Mech Eng,Light,Heat,Weapons

04

B

F04B 49/08 (2006.01) E02F 9/22 (2006.01) F04B 49/06 (2006.01) F15B 21/08 (2006.01)

Patent

CA 2225434

Disclosed is a hydraulic pump control system which can control the absorbing torque of a hydraulic pump with respect to the engine power in a well-balanced manner, and reduce a deviation of an actual revolution number from a target revolution number of the engine. A torque (Tp) of hydraulic pumps during operation is estimated from a pump pressure (Pp) and first and second line pressures (Pr1, Pr2). Based on the estimated torque (Tp), an output torque (Tr) of the hydraulic pumps is controlled so that an error (.DELTA.Ne) between a target revolution number (Nset) and an actual revolution number (Ns) of the engine becomes null. The controlling of the output torque (Tr) of the hydraulic pumps is learned by a fuzzy control system.

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