In this paper, tip tracking control is investigated for a single-link flexible robot. The flexible beam is first lumped to a spring-mass system, to which the so called backstepping approach is applicable, then two robust controllers and an adaptive controller are developed in the presence of system disturbances/uncertainties. The controllers are rigorously proven to be able to achieve stable ti...

Voiced speech is a highly complex process involving coupled interactions between the vocal fold structure, aerodynamics, and acoustic field. Reduced-order lumped-element models of the vocal fold structure, coupled with various aerodynamic and acoustic models, have proven useful in a wide array of speech investigations. These simplified models of speech, in which the vocal folds are approximated...

Numerical modeling and experimentation are used at Xerox Office Group to design, optimize, and verify the fluid dynamic behavior of phase-change ink jets, including the individual jets in a print head. A typical model of an ink jet is based upon lumped-parameter (no spatial variation) assumptions. While quite accurately predicting the main Helmholz resonant frequency (a key performance measure)...

The design and experimental results of a 5-, 10and 23-pole lumped-element HTS bandpass filters for the applications in digital terrestrial television and other digital communication services is reported here. These filters are designed around 800 MHz centre frequency, 7.6 MHz bandwidth using end-coupled lumped element resonators on yttrium-barium-copper-oxide (YBCO) or thallium-barium-calcium-c...

Computer models of the musculoskeletal system frequently represent the force-length behavior of muscle with a lumped-parameter model. Lumped-parameter models use simple geometric shapes to characterize the arrangement of muscle fibers and tendon; this may inaccurately represent changes in fiber length and the resulting force-length behavior, especially for muscles with complex architecture. The...

Transmission lines and their lumped approximating networks have long been incorporated into radio-frequency power amplifiers to improve efficiency and shape circuit waveforms, and are beginning to perform a similar roles in high-frequency switched-mode power electronics. Though lumped line-simulating networks are often preferred to their distributed exemplars for reasons of design flexibility a...