ELECTROHYDRAULIC SERVO SYSTEM Russian patent published in 1997 - IPC

FIELD: automatic control of stabilization and servo systems. SUBSTANCE: electrohydraulic servo system is supplemented with pressure transducer of hydraulic drive, unit of scale coefficients, integrator, second comparator and second relay amplifier connected in series. Output of amplifier is connected to third input of state identifier, second input of second comparator is connected to output of state identifier, second input of unit of scale coefficients is connected to output of second comparator and input of pressure transducer of hydraulic drive is connected to second output of hydraulic drive. Additional correction circuit of state identifier and circuit providing noise immunity of integrator are formed with the aid of added units. This results in increased accuracy and speed of response of system when parameters and influence of nonlinearity and noises change. EFFECT: increased accuracy and speed of response of electrohydraulic servo system under conditions of variation of parameters and influence of nonlinearity and noises. 2 dwg