in the present study, a model of a large lithium polymer (li-po) battery for use in the simulation of hybrid electric vehicles (hevs) is developed. to attain this goal, an equivalent circuit (ec) consisting of a series resistor and two rc parallel networks is considered. the accuracy and the response time of the model for use in an hev simulator are studied. the battery parameters identificatio...

The project aimed to create a circuit simulator that produces JIT compiled native code through LLVM’s APIs. A JIT based simulation approach provides native simulation speed, while still allowing native code to be recompiled to provide circuit debugging features unavailable in statically compiled simulators. The result of the project is a simulator that performs competitively against existing si...

Robust, high yield IC design requires statistical simulation, and therefore statistical models. Simple “fast” and “slow” sets of model parameters are not sufficient to predict the manufacturing variations of all measures of circuit performance for arbitrary circuit topologies, device geometries, and biases. This paper describes an accurate and efficient approach to statistical modeling and char...

Typical automotive air conditioning refrigeration systems employ thermostatic expansion valve or orifice tube controls in a single stage refrigerant circuit. A new automotive air conditioning compressor has been developed that has a two stage compression process, which makes designing and producing a two stage refrigerant circuit more practical. Since this compressor can function in a single st...

This paper presents a simulation technique and a computer program for fast DC analysis of MOS transistor based VLSI circuits. Time domain analysis of a VLSI circuit is evaluated by a piecewise constant waveform approximation. This approximation is realized by repeatedly applying the developed DC analysis engine with initial conditions. All proposed methods such as device modeling, circuit parti...

Title of dissertation: DEEP SUBMICRON CMOS VLSI CIRCUIT RELIABILITY MODELING, SIMULATION AND DESIGN Xiaojun Li, Doctor of Philosophy, 2005 Dissertation directed by: Professor Joseph B. Bernstein Reliability Engineering CMOS VLSI circuit reliability modeling and simulation have attracted intense research interest in the last two decades, and as a result almost all IC Design For Reliability (DFR)...

In RF power device design, much of the analysis is based on measurements. Complete analysis by simulation is often avoided because the high-frequency, largesignal operation makes device simulation unsuitable, and the difficulties in obtaining a good physical compact model make circuit simulation inaccurate. This work presents a methodology that overcomes these limitations by utilizing a combina...

This work introduces a new and simple method for adjusting the gain of current mirror. The major advantage of the proposed architecture is that, unlike the conventional variable gain current mirror, it does not need the change of the biasing current to adjust current gain. Therefore, the power dissipation remains constant in all of the gain settings. In addition, the proposed variable gain curr...

Quantum-dot Cellular Automata (QCA) is an emerging and promising technology that provides significant improvements over CMOS. Recently QCA has been advocated as an applicant for implementing reversible circuits. However QCA, like other Nanotechnologies, suffers from a high fault rate. The main purpose of this paper is to develop a fault tolerant model of QCA circuits by redundancy in hardware a...

This paper discusses circuit simulation with preconditioned relaxation methods. Circuit simulation is one of the most important application problem of the numerical problems with discrete structures, and has been thought to be diicult to parallelize because of the high serialism of the direct linear solvers: no eecient iterative method applicable to circuit simulation is known. This paper repor...