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

FIELD: electricity.

SUBSTANCE: feedback system comprises in series controlled object, subtractor subtracting at the negative input and regulator. The subtractor positive input is input of the feedback system. Output of the controlled object is output of the feedback system. There are also signal sign switch and error analyser. At that the signal sign switch is switched on between the regulator output and the controlled object input while the error analyser is switched on between output of the subtractor and control input of the signal sign switch. The error analyser comprises in series signal multiplier and threshold circuit, as well as differentiating element coupled between the first and second inputs of the signal multiplier.

EFFECT: improved dynamic accuracy at control of the controlled objects prone to oscillations.

2 cl, 5 dwg