A Methodology for Piecewise Linear Approximation of Surfaces

Velho, Luiz; Figueiredo, Luiz Henrique de; Gomes, Jonas

doi:10.1590/s0104-65001997000100003

Cited by 5 publications

(1 citation statement)

References 32 publications

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“…We note that at 25% accuracy the figure shows a discontinuity caused by two patches having been decomposed to different levels of granularity. This problem can be addressed by edge coherence techniques [27]. Fig.…”

Section: Formentioning

confidence: 99%

System simulation of mixed-signal multi-domain microsystems with piecewise linear models

Levitan

Martínez

Kurzweg

et al. 2003

IEEE Trans. Comput.-Aided Des. Integr. Circuits Syst.

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We present a component-based multi-level mixed-signal design and simulation environment for microsystems spanning the domains of electronics, mechanics, and optics. The environment provides a solution to the problem of accurate modeling and simulation of multi-domain devices at the system level. This is achieved by partitioning the system into components that are modeled by analytic expressions. These expressions are reduced via linearization into regions of operation for each element of the component and solved with modified nodal analysis in the frequency domain, which guarantees convergence. Feedback among components is managed by a discrete event simulator sending composite signals between components. For electrical, and mechanical components, interaction is via physical connectivity while optical signals are modeled using complex scalar wavefronts, providing the accuracy necessary to model micro-optical components. Simulation speed vs. simulation accuracy can be tuned by controlling the granularity of the regions of operation of the devices, sample density of the optical wavefronts, or the time steps of the discrete event simulator. The methodology is specifically optimized for loosely coupled systems of complex components such as are found in multi-domain microsystems.

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Section: Formentioning

confidence: 99%