METHOD OF OUTPUT CORRECTION FOR CONTROL APPARATUS, THE CONTROL APPARATUS, AND HYDRAULIC PUMP CONTROL APPARATUS

摘要

When a mode signal Sm of a mode switch (13) is ON, an arithmetic unit (12a) of a controller (12) executes learning control in which a driving current (I) corresponding to a predetermined target pump rotation &thetas;0 is supplied to a proportional solenoid valve (3) to determine the difference between the target pump rotation &thetas;0 and actual pump rotation &thetas; and the difference is stored as a corrective value DELTA &thetas;0 in an EEPROM of a memory unit (12b). When the mode signal Sm of the mode switch (13) is OFF, the arithmetic unit executes normal control in which the corrective value DELTA &thetas;0 stored in the memory unit (12b) is added to the target pump rotation &thetas;0 and a driving current (I) corresponding to this corrected target pump rotation &thetas;0 is supplied to the proportional solenoid valve (3). Therefore, even when any variance exists in the input/output characteristics of a regulator as displacement control means (control objet) of a hydraulic pump and the proportional solenoid valve, variance of actual pump rotation as the output of the control object can be reduced. <IMAGE>