RIA: Multi-Level Simulation and Computer-Aided Macromodeling of Analog Circuits

本研究有两个互补的轨道：自动生成 的模拟宏模型，以及模拟多电平 仿真 第一条轨道的重点是整合 宏模型优化技术，其算法能够 生成宏模型拓扑。 用于生成模拟的算法 正在寻求来自电路级表示的宏模型。 具体化算法的软件被定制以适合于一个 一般的模拟器描述语言（如SPICE 3）。 一组 正在构建用于普通模拟功能的宏模型。 的 模拟多电平仿真的一个关键问题是 在模拟环境中的行为模型。 中的议题 解决的问题有：使用“C”语言，仿真同步， 和电路划分。 第二个问题是， 多级仿真系统中的数字块。 这里信号 正在探讨从一个领域向另一个领域的转换。 一 正在研究的方法是获得一个扩展， 传统的布尔代数到真实的值信号。 这提供 一种简单的方法，包括模拟和数字功能， 统一的仿真环境

This research has two complementary tracks; automatic generation of analog macromodels, and algorithms for analog multi-level simulation. The focus of the first track is on integrating macromodel optimization techniques with algorithms capable of generating macromodel topologies. Algorithms for generating analog macromodels from circuit level representations are being sought. Software embodying the algorithms is tailored to fit into an ordinary simulator's description language (e.g. SPICE3). A set of macromodels for common analog functions is being constructed. The critical problem for analog multi-level simulation is the inclusion of behavioral models in a simulation environment. Issues being addressed are: the use of "C" language, simulation synchronization, and circuit partitioning. A second problem is the inclusion of digital blocks in the multi-level simulation system. Here signal conversion from one domain to another is being explored. One approach being investigated is obtaining an extension of conventional Boolean algebra to real valued signals. This offers a simple way to include both analog and digital functions in a unified simulation environment.