An application of coprime factor based anti-windup and bumpless transfer control to the spark ignition engine idle speed control problem

This paper presents an application of the coprime factor based anti-windup technique of Miyamato and Vinnicombe (1996). The application is an automotive engine idle speed control problem using a novel framework which inverts most of the system nonlinearities. A discussion of the design procedure is given, and extensions to the technique are developed to enable implementation. The final controller is implemented in the Matlab/dSPACE rapid prototyping suite and is used to control a 1.81 spark ignition engine. Results for both anti windup and bumpless transfer situations are presented and discussed.