Fuzzy logic control of electrohydraulic sequence or slave system for vehicle hydrostatic pumps and motors
摘要
The operating point of a hydraulic pump (1) in a hydrostatic system in which the pump supplies a hydraulic servo motor (12) is determined by the pump displacement being varied by the position of a double acting cylinder actuator (2). The cylinder is supplied by a 4/3 valve (5) with solenoid input stages (6,7) that respond to commands from a logic circuit (10) that has position feedback (18) of the actual output state of the pump actuator. The command or required output is provided by a joystick input (17). The signals to the valve solenoids are in a PWM form and are related to the system error in an uncertain form. The controller (10) is configured on fuzzy logic rules that are based upon a knowledge based experience of the system behaviour.
申请公布号
DE4431341(A1)
申请公布日期
1996.03.07
申请号
DE19944431341
申请日期
1994.09.02
申请人
SACHSENHYDRAULIK GMBH CHEMNITZ, 09119 CHEMNITZ, DE
发明人
HARTRAMPF, UWE, 09112 CHEMNITZ, DE;SCHUMANN, PETER, 09111 CHEMNITZ, DE