An improvement in the Routh-Padé approximation techniques
A Lepschy, U Viaro - International Journal of Control, 1982 - Taylor & Francis
A Lepschy, U Viaro
International Journal of Control, 1982•Taylor & FrancisA method for approximating high order stable systems via lower order stable models is
presented. It is an improvement over previous Routh-Padé methods since the denominator
polynomial of the model transfer function, even if based on the elements of a Routh array,
contains two free parameters. A systematic procedure is illustrated for evaluating, besides
the numerator coefficients, such denominator parameters in order to ensure a good fit, in the
Padé sense, and a suitable stability margin.
presented. It is an improvement over previous Routh-Padé methods since the denominator
polynomial of the model transfer function, even if based on the elements of a Routh array,
contains two free parameters. A systematic procedure is illustrated for evaluating, besides
the numerator coefficients, such denominator parameters in order to ensure a good fit, in the
Padé sense, and a suitable stability margin.
A method for approximating high order stable systems via lower order stable models is presented. It is an improvement over previous Routh-Padé methods since the denominator polynomial of the model transfer function, even if based on the elements of a Routh array, contains two free parameters. A systematic procedure is illustrated for evaluating, besides the numerator coefficients, such denominator parameters in order to ensure a good fit, in the Padé sense, and a suitable stability margin.
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