Some Extensions of the Root Locus Method

Abstract

Simple analytical methods for the determination of the angle of emergence from complex poles and zeros are developed. Several case studies of root loci emerging from complex zeros are analyzed to determine criterion for the loci starting from complex pole to end on complex zero, as a pre-requisite study for "cancel-compensation" and self-adaptive compensators. The writer wishes to thank Dr. George J. Thaler for his advice and encouragement in preparing this paper.