For Hawkins's pseudodiagonalization method in multivariable Nyquist-class frequency domain design
an improved dynamic pseudodiagonalization method was presented to enhance the diagonal dominance of the system in order to improve the decoupling and robustness of the system together with relevant analysis. Finally
the dynamic pseudodiagonalization method was used to design an aero-engine steady controller. The simulation results show that the compensated system given by improved dynamic pseudodiagonalization method has good dynamic and static decoupling and robustness compared with standard Hawkins's method.