Alternatives in the generation of time domain models of fluid lines using frequency domain techniques Original Research Article

By converting from frequency domain models to time domain models, nonlinear behavior and linear distributed behavior can both be effectively represented. Three methods are presented to convert fluid line models from the frequency domain to the time domain. Comparison shows that combining components in the frequency domain has advantages in accuracy and efficiency in many practical cases. Methods of finding model poles and residues and ways to avoid numerical difficulties with poles at the origin are discussed.