ROBUST CONTROL SYSTEM Russian patent published in 2008 - IPC G05B13/00 

FIELD: automatic control system.

SUBSTANCE: robust control system can be used in systems for adjusting objects with parameters which are unknown constants or slowly changing in time. System has object to be controlled, coefficient setting unit, first adding unit, first multiplier connected in series with second multiplier and with second adding unit. Outputs of object under control are connected with corresponding inputs of coefficient setting unit. Outputs of the latter are connected with corresponding inputs of first adding unit. System also has parallel filter-compensator. Input of parallel filter-compensator is connected with output of first adding unit output of parallel filter-compensator is connected with first and second inputs of first amplifier. Output of first multiplier is connected with first input of second multiplier. Second input of second amplifier is connected with output of parallel filter-compensator. Output of second multiplier is connected with first input of second adding unit. Second input of adding unit is connected with output of parallel filter-compensator. Output of second adding unit is connected with input if object to be controlled.

EFFECT: widened range of objects to be controlled.

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