On a pseudo-normal form for nonlinear systems

A nonlinear system in pseudo-normal form has the property that its family of linearizations about constant operating points has input-output behavior that is independent of the operating point. Such a system is therefore said to be input-output pseudolinearized. The author develops necessary and sufficient conditions for existence of a static state feedback, state coordinate change, and output coordinate change that transform a given system into pseudo-normal form. This generalizes results where output coordinate changes were not considered and enlarges the class of input-output pseudolinearizable systems