Patent ID: 8195311

Claim:
A control system comprising: an actuator for positioning a control surface; a control law for controlling the actuator, and a processor for generating model output to direct the control law, the processor comprising: an open loop module for generating the model output as a function of a model state and a model input; a corrector for generating a corrector output as a function of the model output; a comparator for generating errors by comparing the corrector output to the model input; and an estimator for generating the model state as a function of the errors, such that the errors are minimized as a function of a single-input, single-output gain matrix; wherein the control surface is positioned in a working fluid flow in order to control the model state; wherein the model input describes a boundary condition for the working fluid flow; wherein the open loop module generates the model output as a further function of a continuity constraint on the model state; wherein the continuity constraint is based on the boundary condition; and wherein the model state describes a spool speed and a cycle time of the processor is 50 ms or less.