FIELD: machine building.
SUBSTANCE: electrohydraulic proportional system comprises PWM-regulator, flow control electrohydraulic proportional valve, electrohydraulic actuator, flow rate measuring module, valve characteristics measuring module and feed-forward control module. Flow rate measuring module measures flow rate to send measurement result into valve characteristics measurement module for valve minimum operation current and actuator maximum operation rate to be measured and loaded into feed-forward control module. The latter sets appropriate ratio between actuator arte and valve core current and makes valve core current complying with preset rate magnitude to be loaded into PWM controller.
EFFECT: perfected system control.
6 cl, 9 dwg
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