Patent ID: RE40545

Claim:
A control system for use in adjusting a controlled variable representative of a system to be controlled, wherein the controlled variable is represented within an observable variable and at least two values of the controlled variable correspond to a single value of the observable variable, the control system comprising: a signal source providing first and second values of the observable variable, the second value of the observable variable subsequent in time to the first value of the observable variable; mapping logic, the mapping logic receiving the first value of the observable variable and outputting a first and a second possible value of the controlled variable; a first estimator capable of estimating a future state of the system to be controlled, the first estimator taking as an input the first possible value of the controlled variable and producing a first output variable representative of a first predicted value of the observable variable responsive to the first possible value of the controlled variable; a second estimator capable of estimating a future state of the system to be controlled, the second estimator taking as an input the second possible value of the controlled variable and producing a second output variable representative of a second predicted value of the observable variable responsive to the second possible value of the controlled variable; and determining logic determining which of the first and second predicted values of the observable variable more accurately corresponds to the second value of the observable variable.