Linguistic Description of Circuits and its Application for Symbolic Circuit Analysis.

电路的语言描述及其在符号电路分析中的应用。

基本信息

批准号：
09650415
负责人：
SUGAHARA Kazunori
金额：
$ 1.22万
依托单位：
Tottori University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1998
项目状态：
已结题

项目摘要

In order to analyze a circuit by using computers, it is necessary to describe the circuit in some way. In the case of digital circuits, this corresponds to numbering each node in the circuits and generating their coefficient matrixes. After the coefficient matrixes are obtained, the computable ordering of nodes can be decided for the time domain simulation. Such simulation can easily calculate the impulse responses and the transfer function between arbitrary nodes.In order to obtain these coefficient matrixes, it may be suggested that they are made directly from the circuit. In this case, however, it is impossible to manage a large-scale circuit by dividing it into some sub-circuits, and it is expected that there are careless mistakes of description. Considering these points, the enumerative description of each circuit element is generally used. This method is adopted in Spice that is a representative analyzing program of analog circuits. This description method is simple and plain bec … More ause it simply enumerates nodes' numbers to which elements are connected and the element values. However, it costs the users much time to manage all of the nodes' numbers and the circuit parameters completely.In this paper, we propose a novel method to describe circuits as a kind of language instead of simply enumerating data of connections. By the proposed method, it is possible to describe a whole circuit as interconnections of a main circuit and some sub-circuits, and to deal the main circuit as a main routine of ordinal procedural languages and each sub-circuit as a sub-routine. At that time, nodes in each sub-circuit can be named independently and numbered automatically by the system without users' management. In the proposed method, an effective description of circuits is expected by using a lot of instructions and recursive calls of sub-circuits.In the case of designing analog circuits, time varying elements are rarely used. On the contrary, in the case of digital circuits, the adaptive signal processing systems that vary the coefficients of multipliers can be easily constructed. For easy simulation of these adaptive circuits, independent management of the multiplier coefficients of each sub-circuit is available in the proposed description method. Less

为了使用计算机分析电路，需要以某种方式描述电路，在数字电路的情况下，这相当于对电路中的每个节点进行编号并在获得系数矩阵后生成它们的系数矩阵。可以为时域仿真确定节点的可计算排序，这种仿真可以轻松计算任意节点之间的脉冲响应和传递函数。为了获得这些系数矩阵，可以建议直接从电路中制作它们。然而，在这种情况下，大规模的电路不可能通过划分成若干子电路来管理，并且预计会出现描述上的粗心错误，因此一般采用对每个电路元件进行枚举的描述。 Spice是一个典型的模拟电路分析程序，这种描述方法简单明了，因为它只是枚举了所连接的元件的数量以及元件的值，但需要用户花费大量时间来管理所有元件。节点的数量和在本文中，我们提出了一种将电路描述为一种语言的新方法，而不是简单地枚举连接数据。通过所提出的方法，可以将整个电路描述为主电路和电路的互连。一些子电路，并将主电路作为序数过程语言的主程序，每个子电路作为子程序，此时每个子电路中的节点可以独立命名并自动编号。系统无需用户管理。所提出的方法，期望通过使用大量的指令和子电路的递归调用来有效地描述电路。在设计模拟电路的情况下，很少使用时变元件，相反，在数字电路的情况下。，可以轻松构建改变乘法器系数的自适应信号处理系统，为了轻松模拟这些自适应电路，在所提出的描述方法中可以独立管理每个子电路的乘法器系数。