A methodology for the potential improvement of gas-turbine engine digital control systems

Proposes new techniques for the digital control of a gas-turbine engine. The methods have the particularities of (i) providing satisfactory responses for a wider spectrum of sampling frequencies than that obtained with the conventional techniques, (ii) resulting in fixed-order and fixed-structure control laws, and (iii) presenting superior performances than the conventional approaches when subjected to quantization effects. The design steps as well as the simulation results are presented for the control of the gas-generator subsystem of a turboshaft engine