Karl Küpfmüller: a German contributor to the early development of linear systems theory

  title={Karl K{\"u}pfm{\"u}ller: a German contributor to the early development of linear systems theory},
  author={Chris Bissell},
  journal={International Journal of Control},
  • C. Bissell
  • Published 1 October 1986
  • Mathematics
  • International Journal of Control
During the 1920s the German engineer Karl Kupfmuller made substantial advances in the development of a theory of linear systems, notably by adopting a ‘systems approach’ to modelling electrical networks and control systems. Kupfmuller's achievements included an appreciation of the significance of the ‘time × bandwidth product’ for information transmission, and the establishment of an approximate stability criterion for a certain type of control system. This early work is outlined in the context… 

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