Minimality of dynamic input-output decoupling for nonlinear systems

In this note we study the strong dynamic input-output decoupling problem for nonlinear systems. Using an algebraic theory for nonlinear control systems, we obtain for a dynamic input-output decouplable nonlinear system a compensator of minimal dimension that solves the decoupling problem

Dynamic disturbance decoupling for nonlinear systems

In analogy with the dynamic input-output decoupling problem the dynamic disturbance decoupling problem for nonlinear systems is introduced. A local solution of this problem is obtained in the case that the system under consideration is invertible. The solution is given in algebraic as well as in geometric terms. The theory is illustrated by means of two examples: a mathematical one and an example of a voltage frequency controlled induction motor

Nonlinear dynamic disturbance decoupling

The authors introduce the dynamic disturbance decoupling problem for nonlinear systems. A local solution of the problem is given. A compensator solving the problem can be obtained by means of S.N. Singh's (1981) algorith