Patent ID: 7650218

Claim:
A computer program product comprising a computer readable medium having a computer readable program, wherein the computer readable program when executed on a computer causes the computer to: determine a turbocharger speed error term (ε TS ), wherein the ε TS comprises a difference between a nominal turbocharger maximum speed and a current turbocharger speed; determine a turbocharger speed derivative with respect to time (δ TS /δ t ); calculate a turbocharger control response based on the ε TS and the δ TS /δ t ; and control a turbocharger based on the turbocharger control response, wherein the turbocharger control response comprises a modified turbocharger maximum speed, and wherein controlling the turbocharger based on the turbocharger control response comprises replacing the nominal turbocharger maximum speed with the modified turbocharger maximum speed.