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This paper generalizes the concept of the oscillators based on the operational transresistance amplifier (OTRA) into the fractional order domain. The added parameter in the fractional-order design is an important in practical and can model the non-ideality of the conventional capacitors. The general condition and frequency of oscillation have been derived analytically in terms of the circuit components...
This paper proposes a maximum power point tracker (MPPT) which can accommodate widely output voltage range of solar panel under various environmental conditions. The controller in the MPPT employs the interval type-2 Takagi-Sugeno (IT2 TS) fuzzy technology. The main advantage of the proposed IT2 TS fuzzy controller is that it can handle the uncertainties in the modeling process. The experimental results...
Simulation modeling is an engineering application where we can virtually see any system in a mathematical form that can be converted into a model. This paper introduces static simulation and dynamic simulation modeling concepts and how they are virtually modeled in computer science. Static simulation model is explained by an example of demand-supply rule concept and how it is simulated in the view...
In this work, we use a mostly analytical approach of Foldy-Lax multiple scattering equation method to efficiently model and solve physical/electromagnetics properties of the structures of SIW based devices and 3D IC in chip-package-board system which include multiple vertical and horizontal interconnects. We decompose the modes effects inside the target structures into modes of cavity with multiple...
The Intrinsic capacitance of CMOS circuits provides inexpensive decoupling capacitance for power supply noise mitigation. In FinFET circuits, such capacitance has greater dependence on the logic states of gates. Consequently, when a group of gates are inactive, there exists a combination of inputs that will maximize the decoupling capacitance for the power supply. In this paper, (i) we establish the...
This paper presents a diagnosis method for gate delay faults in the presence of clock delay faults. The method deduces candidate faults using a single gate delay fault dictionary and a single clock delay fault dictionary, which contain the information of latest transition time of signals as well as output logic values. To reduce the diagnostic ambiguity we remove those faults from the candidate fault...
This paper introduced the working principle that energy harvester based on MSMA(Magnetically Controlled Shape Memory Alloys). At the same time, a new management circuit in regard to flyback transformer-power and MSMA energy harvester was put forward, which analyzed the characteristics of the electric energy for the release of instantaneous circuit, which influence the change of voltage input and the...
In this paper it is described a research project concerning the derivation and the development of a novel foward-facing hybrid vehicle simulation tool based on Multiphysics lumped circuit approach. Sub-components are modelled as multi-port systems. Each port is characterized by means of an intensive and an extensive quantity complementary in power. This approach allow to model the mutual influence...
There are circulating currents among the parallel inverters. Based on the existing researches on circulating currents, an accurate model of switching frequency circulating current is proposed in this paper. Moreover, the relationships between the circuit parameters and switching frequency circulating current are investigated and analyzed in detail. Based on the analytical results, favorable design...
Microbial fuel cells (MFCs) are novel devices capable of producing electricity while cleaning wastewater. Developing dynamic control-oriented models for such systems represents a crucial tool for the future design of software sensors and model-based control strategies. To this end, this work presents a MFC process control-oriented model obtained by combining fundamental equations based on mass and...
In this paper, a novel simple algorithm of nonlinear load simulation is proposed. The characteristic of load simulation is very important for power electronic load (PEL). About this content, there are few articles mentioned, especially the study of nonlinear load simulation algorithm is less. So on the basis of linear load simulation algorithm introduced, this paper summarizes a kind of algorithm...
A generic circuit partitioning method is proposed which reorders the equations and variables of power electronic circuits with idealized switches and diodes in a specific bordered block-triangular form, where each block on the diagonal is dependent only on a small number of switches. The number of floating-point operations for sparse matrix triangularization, needed after a change of switch configuration,...
Due to their orthogonality and nearly constant pulse widths, Modified Hermite Pulses (MHPs) have shown a great potential to enhance the data rate of UWB communications by creating M-ary or multiple access parallel systems. However, the potential high power dissipation required by the pulse set generation and the frequency shifting has limited their utilization in practice. In this paper, we propose...
In order to investigate the distributed semiconductor device high frequency operation, we are developing a 2D/3D time-domain electromagnetic physical simulator. It is based on a self-consistent solution of both the Maxwell equations and the free carrier macroscopic conservation equation sets issued from the Boltzmann general transport equation. Its large potential application field presently concerns...
Decrease in state of health (SoH) of a battery is a measure of end of battery life. Also available battery capacity is dependent on battery life either. Thus accurate estimation of SoH and cycle number of a battery are very important. In this study a method was proposed in order to estimate battery cycle number using ECE 15 driving cycle. Also another method to obtain SoH of a battery using the cycle...
Vibration energy harvesting is a technique for the generation of electricity from ambient vibrations. Electrostatic vibration energy harvesters (e-VEHs) are particularly compatible with microtechnology and can serve as a source of energy for autonomous microsystems. E-VEHs require conditioning electronics to effectively sequence different phases of energy conversion. One of the most promising circuits...
Quantum particles possess both wave and particle natures. When quantum effect devices exploiting the wave nature and the devices described from the view point of particle nature coexist in a system, the following advantages are gained by representing former devices in the same way as we describe the latter devices: First, it is not necessary to compute probability distribution from wave functions...
This paper proposes a theoretical study supporting the use of simplified single-diode photovoltaic (PV) models to accurately reproduce the behaviour of PV generators. In particular, a newly defined parameter is introduced, which allows to classify PV modules according to the possibility to neglect either the series- or the shunt resistance in the circuit model. On such a basis, equations allowing...
This paper presents an algebraic method for parameter identification of Thevenin's equivalent circuit models for batteries under non-zero initial conditions. In traditional methods, it was assumed that all capacitor voltages have zero initial conditions at the beginning of each test. This would require a long rest time between two successive discharging or charging tests, leading to very long test...
This paper presents an LTSpice model for a Phase Change Memory (PCM) cell that accurately simulate the temperature profile, the crystalline fraction and the resistance of the cell as a function of the programming pulse based on physical theories. The model is able to generate the I-V characteristics of a PCM cell, and precisely simulate the drift phenomenon of resistance and threshold voltage at the...
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