ROBUST CONTROL SYSTEM Russian patent published in 2008 - IPC G05B13/02 

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 and second adding units, first multiplier connected in series with second multiplier, and module finding unit connected in series with nonlinear degree transform unit and third multiplier. Outputs of object under control are connected with corresponding inputs of coefficient setting unit. Signals from outputs of coefficient setting units enter corresponding inputs of first adding unit. System also has serial filter-compensator. Input of serial filter-compensator is connected with output of first adding unit. Output of serial filter-compensator is connected with both inputs of first multiplier, with input of module finding unit, with second input of second multiplier, with second input of third multiplier and second input of second adding unit. Output of first multiplier is connected with first input of second amplifier. Output of second multiplier is connected with first input of second adding unit. Output of module finding unit is connected with input of nonlinear degree transform unit. Output of the latter is connected with first input of third multiplier. Output of third multiplier is connected with third input of second adding unit. Output of the latter is connected with input of object under control.

EFFECT: widened functional abilities of control system.

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