An automatic root locus plotter using an analog computer

@article{Liethen1961AnAR,
  title={An automatic root locus plotter using an analog computer},
  author={F. E. Liethen and Constantine H. Houpis and J. J. D'azzo},
  journal={Transactions of the American Institute of Electrical Engineers, Part II: Applications and Industry},
  year={1961},
  volume={79},
  pages={523-527}
}
THE METHOD of plotting the locus of roots of the characteristic equation of a linear feedback control system has been essentially a manual point-by-point calculation. The basic principles for plotting the root locus were first developed by Evans. The details for analytically calculating some portions of the curves and the procedures for finding points on… CONTINUE READING