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A stochastic electromagnetic-circuit modeling workflow is presented for the computer-aided analysis of electromagnetic interference effects in multi-scale, shielded environments. The multi-scale complexity of the environment is tackled through the selective relaxation of the full electromagnetic coupling between different sub-domains when appropriate. The Stochastic Collocation technique is relied...
In today's systems, analog and mixed-signal (AMS) circuits are tightly interwoven with HW/SW systems and the application. Hence, a verification of the AMS part alone is not sufficient any more, in particular considering its application in Cyber-Physical Systems. In order to guarantee ‘first time right’, the accuracy of the models, the validation of the application fitness, and in changing, uncertain...
This paper delivers a considerable improvement in the framework of the statistical simulation of highly nonlinear devices via polynomial chaos-based circuit equivalents. Specifically, a far more efficient and “black-box” approach is proposed that reduces the model complexity for nonlinear components. Based on recent literature, the “stochastic testing” method is used in place of a Galerkin approach...
Models of dynamic systems are often constructed to improve system performance by identifying and modifying structures and parameters that drive system behavior. Once identified, these can be used to design and test policies for performance improvement. A preliminary step in developing policies is the identification of high leverage parameters and structures, the influential model sections that drive...
The paper presents an analysis of the possible evolution of the power grids in the near future. In particular, we expect Distribution Networks to significantly evolve. Currently, Distribution Networks are rather simple systems with very limited active control. The growing presence of Distributed Generation and in particular the introduction of renewable sources is expected to significantly change...
The implementation of complex functionality in low-power nano-CMOS technologies leads to enhance susceptibility to parametric disturbances (environmental, and operation-dependent). The purpose of this paper is to present recent improvements on a methodology to exploit power-supply voltage and temperature variations in order to produce fault-tolerant structural solutions. First, the proposed methodology...
The dramatic increase in leakage current, coupled with the swell in process variability in nano-scaled CMOS technologies, has become a major issue for future IC design. Moreover, due to the spread of leakage power values, leakage variability cannot be neglected anymore. In this work an accurate analytic estimation and modeling methodology has been developed for logic gates leakage under statistical...
It is generally recognized that asynchronous operation of logic networks offers specific advantages over synchronous operation controlled by a central clock when the network is subject to large or widely varying inter-module propagation delays. In this paper we characterize several previously described techniques for achieving asynchronous operation by a single model. Essential to the model is the...
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