FEEDBACK SYSTEM Russian patent published in 2015 - IPC G05B13/02 

FIELD: radio engineering, communication.

SUBSTANCE: feedback system comprises series-connected control object, subtractor on the negative input, controller and compensating link. The positive input of the subtractor is the input of the system, the output of the control object is the output of the system, wherein the system further includes an additional controller, switching device and input signal analyser. The first input of the switching device is connected to the output of the compensating link, the second input is connected through the additional controller to the output of the subtractor, the third input is the control input and is connected through the input signal analyser to the input of the system, and the output of the switching device is connected to the input of the control object. The switching device comprises a unit signal former, a subtractor, two signal multipliers and an adder, wherein the output of the subtractor is connected to the input of the first signal multiplier, the positive input of the subtractor is connected to the output of the unit signal former, the negative input of the subtractor is connected to the output of the second signal multiplier and is the control input of said switching device, the second inputs of the signal multipliers are inputs of said switching device, the outputs of said signal multipliers are connected to inputs of the adder, and the output of the adder is the output of the switching device.

EFFECT: high static and dynamic accuracy when controlling control objects prone to vibrations.

2 cl, 5 dwg