Achieving diagonal dominance by frequency interpolation

This paper proposes a new method for systematic construction of dynamic pre-compensators to achieve better diagonal dominance. Curve fitting is used to construct a dynamic pre-compensator element-by-element, meaning unlike most minimization algorithms, there is no restriction on the structure of each element. To demonstrate its effectiveness, the method is applied to the Rolls-Royce Spey gas-turbine engine, which is a highly interacting and multivariable system.