Kurfess, Thomas R. Nagurka, Mark L. Center., Carnegie Mellon University.Engineering Design Research Foundations of linear control via a new geometric paradigm Abstract: "In this report, we reexamine the foundations of classical control theory with reference to eigenvalue geometry via a new set of graphical controls tools, gain plots. These plots depict eigenvalue trajectory as an explicit function of gain. Various classical controlconcepts are generalized in nine theorems and demonstrated in three simple, yet pedagogical, examples." Control theory. 1991-01-01
    https://kilthub.cmu.edu/articles/journal_contribution/Foundations_of_linear_control_via_a_new_geometric_paradigm/6489854
10.1184/R1/6489854.v1