SYMBOLIC MANIPULATION OF TRANSFER-FUNCTIONS AND STATE-SPACE REALIZATIONS

In this paper several applications on the use of symbolic computation to control system design are discussed. These applications are of educ ational value to control engineering courses. The routines developed h ere provide a quirk way to formulate control design problems, ranging from calculating elementary transfer functions to automating the const ruction of state space realization. This paper also gives detailed dis cussion on the symbolic computational process of the programs being de veloped. Examples of symbolic calculation of generalized plant state s pare realization for use in H-infinity/H-2 optimal control are present ed.