FIELD: automatic flight control systems. SUBSTANCE: invention can be employed to decrease deviation of flight altitude of baffle plane from balancing value and to reduce time of transient process of baffle plane by altitude and pitch angle. Technical result of invention consists in decreased deviation of reference flight altitude and balancing value of pitch angle under action of disturbance and in reduced time of return of baffle plane to reference flight altitude and to balancing value of pitch angle after termination of disturbance by formation of signal of nonlinear control. Device of single-channel control over longitudinal motion of light baffle plane has transmitter of pitch angle, transmitter of angular velocity, transmitter of angular acceleration, first adder, rudder assembly, former of nonlinear control signal containing unit computing modulus, amplifier, second multiplier with relay unit, first multiplier, inverter, third multiplier and second adder. EFFECT: decreased deviation of reference flight altitude and balancing value of pitch angle. 5 dwg
