Nonnegative realizations of matrix transfer functions
This paper is an important contribution to the theory concerning nonnegative realizability of matrix transfer functions. The main result characterizes the nonnegative realizability of a scalar-valued transfer function with the help of primitive transfer functions and is extended to the general case of matrix-valued transfer functions. In it there is also an algorithm for establishing whether a scalar-valued transfer function with nonnegative impulse function has a nonnegative realization. The paper is clearly written, and its relation to the existing literature is clearly indicated.
scientific article; zbMATH DE number 1462179
scientific article