FIELD: engineering, in particular, controlling position of combustion chambers of missile propelling engines, or position of aircraft control surfaces. SUBSTANCE: device has two-level relay control of position of control valve of hydraulic distributor, which provides precision of positioning within range of one lowermost digit of digital position detector. EFFECT: increased precision of positioning, decreased power consumption, decreased weight of power supply source, decreased weight of cable network and weight of complete system. 1 dwg
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