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How to design an optimal mixed H2/H∞ robust FID controller for a complex control system is of great practical importance, but it is still an open issue. From the perspective of evolutionary algorithm, this paper formulates this issue firstly as a typical constrained optimization problem by minimizing a weighted objective function consisting of the robust stability performance, disturbance attenuation...
In this paper, a compact triplexer is proposed by cascading three tilted multimode interference couplers for FTTH applications. AH components based on silicon rib waveguides. Firstly, a MMI coupler is designed to separate the 1310 nm wavelength band by using pseudo self-imaging technique. A tiled MMI coupler is then cascaded to separate the 1490 nm and 1550 nm wavelength bands. Numerical simulations...
This paper presents a hybrid multilevel inverter with DC bypass. Mixed modulation method is proposed to balance dc voltage, and enables Si devices & wide bandgap devices integration to reduce power loss and achieve high power density. Simulation results are firstly provided to verify the validity of the proposed approach.
This paper presents a compensation method for the stress dependence of flexible integrated capacitive pressure sensors. Without compensation the differentiation between changes in the sensor signal due to pressure or bending cannot be made [1]. To achieve this requirement a complex back side structuring of thinned capacitive pressure sensors is conducted in preparation for simulations and pressure...
The properties of SiC Power Mosfet transistors have been known for years and have been extensively described in the literature. Also, new generations of SiC transistors and diodes are being developed. Power Mosfet transistors are mainly used in power electronics applications in which such transistors operate as controlled switches. In this case, equipment design engineers focus their attention on...
The heat generated by self-propagating exothermic reaction can be used to melt solder and then join the components. However, the microstructure of self-propagating interconnects is different from those obtained through traditional soldering process for its unique thermal conditions. In this paper, a finite element model was established to simulate the temperature field of self-propagating joints at...
This paper demonstrates the working temperature effect on ON/OFF current ratio of FinFET transistor and the prospect of using it as a temperature nano-sensor. The characteristics of the FinFET transistors were simulated using MUGFET simulation tool at different working temperature. Output characteristics with a working temperature range (−25°C to 125°C) were simulated. Variation of ON current to OFF...
High Availability (HA) is a quality of service that is required for many services, e.g. carrier grade services. Systems providing such services undergo upgrades, e.g. software version upgrade, like any other system. Avoiding/limiting service outage during these upgrades is of critical importance to meet the HA requirement. Thus, the upgrade campaign specifications, which drive the process need to...
Solar cells have been through many development phases. Silicon is a one of many important materials in solar cell manufacturing. One of silicon solar cell applications which can produce high efficiency is Heterojunction with Intrinsic Thin-layer (HIT) crystalline silicon solar cell. Another alternative of silicon solar cell applications is Heterojunction with Compound Thin-layer (HCT) crystalline...
Continuous demand for higher performance is adding more pressure on hardware designers to provide faster machines with low energy consumption. Recent technological advancements allow placing a group of silicon dies on top of a conventional interposer (silicon layer), which provides space to integrate logic and interconnection resources to manage active processing cores. However, such large resource...
Coping with emergency situations requires effective and prompt decision-making under constantly changing situations. The deployment of various kinds of sensors makes it possible to acquire vast amounts of information. At present, however, most information processing is not automated; therefore, the quality of decision-making depends heavily on the capacities of the decision maker. To solve this problem,...
The heterogeneous SIS model for virus spread in any finite size graph characterizes the influence of factors of SIS model and could be analyzed by the extended N-Intertwined model introduced in [1]. We specifically focus on the heterogeneous virus spread in the star network in this paper. The epidemic threshold and the average meta-stable state fraction of infected nodes are derived for virus spread...
In this letter we introduce a self-interference (SI) cancelation technique for amplify and forward relays. Relays are used to help forward signals between a transmitter and a receiver. This helps increase the signal coverage and reduce the required transmitted signal power. One issue that faces relays communications is the SI problem where an unwanted leaked signal from the relay's output will contaminate...
In this paper, we introduce the possible texturing methods and their effects on the performance of multicrystalline silicon solar cells. A 2-D process and device simulator is used for this purpose and the resultant efficiency increase is studied. The optimized texturing angel is deducted by theoretical calculations of ray tracing. Theoretical calculations show that the best texturing angle to have...
Fan-out wafer level packaging technology becomes more attractive and popular in the semiconductor packaging industry. The fan-out wafer level package (FOWLP) has the feature of integrating various devices in a tiny form factor. Since the FOWLP size is compact and small, its package strength is critical to its reliability. In this work, the three-point bending test method and finite element method...
In this paper, finite element method (FEM) simulations are carried out with pillar-concave structure using silicon substrate, silicon substrate with polyimide (PI) and with polybenzoxazole (PBO) for realization of Cu-Cu bonding at low temperature. Parameters of bonding temperature, pillar diameter, concave sidewall angle, and multilayer of concave structure are all considered in simulation. In addition,...
Modern wind energy systems require power electronic converters to control its rotational speed in order to extract the maximum power from the wind. These converters can provide additional services if they are properly controlled. This paper presents a strategy for wind energy systems which simultaneously allows compensation of reactive power, negative sequence voltages and harmonics currents. This...
The downscaling in VLSI systems and the use of new materials influences the reliability of components in terms of radiation more and more. The unavoidable presence of particle radiation on ground and in space leads to unwanted failures in the electronic devices. Concerning packaging materials, design and technology a lot of steps were done to avoid radiation sensitivity. Nowadays microelectronic for...
We study a single location supply system for repairable spare parts. The system consists of a multi-server repair shop and inventory with ready-to-use spare parts. When a failed part is received, a new (or as-good-as-new) replacement part is sent back, and the failed part is forwarded to the repairshop. In the case of unavailability of spare parts, failed requests are backordered and fulfilled when...
Since it is challenging to position the noncooperative receiver (Rx), especially when the backward frequency band of the Rx cannot be obtained by the anchors. In this paper, we propose a novel noncooperative Rx positioning method using full-duplex relay technique, where the anchors act as full-duplex relays for the Rx. It can trigger the close-loop-power-control (CLPC) between the transmitter (Tx)...
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