A METHOD FOR EFFICIENT NONLINEAR TRANSIENT ANALYSIS
Original Publication Date: 1999-Jan-01
Included in the Prior Art Database: 2002-Jul-30
This paper presents a stable quasi-explicit inte- gration for nonlinear transient analysis. This algo- rithm is a generalization of the Adaptively Controlled Explicit Simulation (ACES) algorithm [l]. The method retains the efficiency and numeri- cal stability properties of ACES. Moreover, the method is flexible in the sense that it can accommo- date general nonlinear device models and it can also exploit simple device models (such as piecewise polynomial) to provide significant efficiency improvement. Traditional implicit techniques are general and accurate, but not flexible enough to exploit simple models for significant gain in effi- ciency. More recently developed fast timing simula- tion algorithms achieve significant speedups by employing simple piecewise linear or piecewise quadratic models. However, these algorithms are not sufficiently general to accommodate more detailed models to capture important physical effects without significant degradation in simulation efficiency.