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  • Further discussion on impulse energy approximation 

    Lucas, T. Nigel (Institute of Electrical and Electronics Engineers, 1987-02)
    Recent criticisms by Rao about impulse energy approximation are answered in detail. Further ideas are put forward as to how weighted energy parameters may be used to determine the reduced models for step inputs.
  • Linear system reduction by impulse energy approximation 

    Lucas, T. Nigel (Institute of Electrical and Electronics Engineers, 1985-08)
    A method is given for linear system reduction which is a more general form of the Routh method. The reduced models retain stability, and a fuller contribution is made to the impulse response energy of the reduced system ...