In this paper, an state-space approach to deadbeat servomechanism design is proposed using multirate input control. This paper focuses advantage of multirate control over conventional single-rate control. To achieve settling time specified, multirate controllers require less frequent sampling of measurement than single-rate ones. Multirate input mechanism can yield shorter settling time than si...

A model was developed to estimate total suspended solids (TSS) removal in the Stormceptor, an oil/sediment separator. The model was based on a commonly used continuous simulation model (USEPA SWMM) for hydrological processes. The suspended solids’ loading was estimated using build-up and wash-off equations. The solids were assumed to be distributed into five particle sizes for settling calculat...

The contents of this paper are based on experimenThe most important part of the procedure was to tal and practical observations collected over the past establish whether the settling apparatus gave comyears. parable results to the factory or not, and whether there was a correlation. between the. two laboratory settling (1) An Investigation into the of Laboratory tubes. Initially this latter poi...

A new feedforward compensation amplifier architecture that provides very fast settling performance is introduced. The additional feedforward path introduces zeros in the open-loop transfer function which can be used to shape the overall frequency response. It is shown that a second-order bandpass feedforward path is useful for extending the unitygain-frequency of the overall amplifier. By choos...

A BiCMOS frequency synthesizer compliant for both Wireless LAN (WLAN) 802.11a and 802.11b standards is presented. Proposed adaptive dual-loop PLL architecture improves reference spur rejection and settling time performance. The synthesizer is fabricated in a 0.25 μm BiCMOS process and dissipates 70 mW from a single 2.5 V supply. It occupies a silicon area of 1.7 mm2. Test-chip measurement resul...

We investigate the effect of permeant flow on the sedimentation of porous fractalaggregates in water. Our theoretical analysis gives explicit calculations on the scaling behaviours of settling velocities, taking into account the fractality through a proper permeability for fractal aggregates. The calculated results for the scaling behaviours of settling velocities fit remarkably well with exper...

in this century due to population growth, the use of river water has become more complicated. since most rivers pass across loose and erodible areas, they always act as the most important factor of transferring eroded materials from the solid crust of the earth.  vortex basins are among the solutions known for the high-speed separation of solids from liquids (filtration). one of the problems of...

We compute rates of sediment removal from the Columbia River, USA plume near field using a control volume technique. By using data from repeated transect passes along the plume axis, we account for variations in plume width, depth, and velocity, and we construct a framework for determining the dominant terms in the complete sediment balance. The contribution due to turbulent sediment flux is es...