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A switch Application Specific Integrated Circuit (ASIC) chip implemented in six-substrate layers for low cost design which has more than 1000 pin-count. This paper deals with the electrical design of the high density package, including transmission characteristics of the key signal lines, crosstalk between signal lines, the coupling between neighboring power pins, DC IR drop and AC input impedance...
Control of the annulus pressure during drilling of oil and gas wells can be a challenging task, due to the complex dynamics of the multiphase flow. Since well kicks and fluid losses are potentially dangerous, it is important to improve the performance and the capabilities of estimation and control and to initiate an automatic well control system. Novel adaptive observers for estimation the flow rates...
This paper presents a switched control scheme for regulation of the annular pressure in a well during drilling. The main feature is automatic kick attenuation while drilling reservoir sections. A simple mathematical model is presented that captures the dominant phenomena of the drilling system and forms the basis for observer and control design. A switched pressure control algorithm for feedback control...
Characterizing convergence speed is one of the important research challenges in the design of distributed consensus algorithms for networked multi-agent systems. In this paper, we consider a group of agents that communicate via a dynamically switching directed random network. Each link in the network, which represents the directed information flow between any ordered pair of agents, could be subject...
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