Lumped parameters and scators

Lumped Parameters Model of a Crescent Pump

This paper presents the lumped parameters model of an internal gear crescent pump with relief valve, able to estimate the steady-state flow-pressure characteristic and the pressure ripple. The approach is based on the identification of three variable control volumes regardless of the number of gear teeth. The model has been implemented in the commercial environment LMS Amesim with the developme...

Automatic Modelling of Lumped Parameters Dynamic Systems

This paper describes the framework and the approach that are utilized in the implementation of a software for automated mathematical modelling of dynamic systems. Application examples illustrate the main features and possibilities of this software. The formalism utilizes a system linear graph representation associated to a systematic procedure in order to obtain a state-space model of lumpedpar...

Estimation and identification of parameters in a lumped cerebrovascular model.

This study shows how sensitivity analysis and subset selection can be employed in a cardiovascular model to estimate total systemic resistance, cerebrovascular resistance, arterial compliance, and time for peak systolic ventricular pressure for healthy young and elderly subjects. These quantities are parameters in a simple lumped parameter model that predicts pressure and flow in the systemic c...

A Practical Design of Lumped, Semi-lumped & Microwave Cavity Filters

Digital filtering of oscillations intrinsic to transmission line modeling based on lumped parameters

A correction procedure based on digital signal processing theory is proposed to smooth the numeric oscillations in electromagnetic transient simulation results from transmission line modeling based on an equivalent representation by lumped parameters. The proposed improvement to this well-known line representation is carried out with an Finite Impulse Response (FIR) digital filter used to exclu...