HYDRAULIC DRIVE Russian patent published in 1996 - IPC

FIELD: automatic control devices; rocket control systems. SUBSTANCE: hydraulic drive has digital-to-analog converter with rod connected with floating pistons of distributor motion mechanism connected to actuating motor linked with output shaft of drive on which swivel cam of feedback device is secured. Cam is supported by roller mounted rotatably on rod of digital-to-analog converter by means of axle parallel to output shaft of drive. Feedback device is provided with limiter of turn of rod of digital-to-analog converter made in form of fork secured rod. Output shaft of drive is received by slot of this fork. Depth of slot of this fork distance from top of slot to axis of rotor is selected from following relationship: A is lesser/equal to R_min+r-R_b; B is more than/equal to R_max-R_min+ R_b, where A is distance between top of slot and axis of roller, B is depth of slot, R_min is minimum radius of cam, R_max is maximum radius of cam, r is radius and R_b is radius of output shaft. EFFECT: enhanced reliability. 3 dwg