An intelligent control shell for CAD tools

Author

Fujita, Satoru ; Otsubo, Motohide ; Watanabe, Masanobu

Author_Institution

C&C Res. Labs., NEC Corp., Kanagawa, Japan

fYear

1994

fDate

1-4 Mar 1994

Firstpage

16

Lastpage

22

Abstract

Describes an intelligent control shell for CAD tools, which can automatically create a command sequence to control CAD systems using symbolic knowledge of general command flows and non-symbolic knowledge of the past execution data. Users define a model of possible control flows, which are transformed into a state transition graph from which executable command sequences are inferred. The control system statistically analyzes non-deterministic branches, where a final result is predicted from a current state of a design object, a command history and the succeeding commands. Then the most promising command to optimize the design objects is selected and executed. The LSI CAD system controlled by the proposed shell synthesizes circuits about 5% faster than that synthesized with a standard script for delay minimization

Keywords

circuit CAD; intelligent control; intelligent design assistants; large scale integration; CAD tools; LSI CAD system; automatic command sequence generation; circuit synthesis; command history; delay minimization; design objects optimization; executable command sequences; general command flows; intelligent control shell; nondeterministic branches; nonsymbolic knowledge; state transition graph; succeeding commands; symbolic knowledge; Automatic control; Circuit synthesis; Control system analysis; Control system synthesis; Control systems; Design automation; Design optimization; History; Intelligent control; Large scale integration;

fLanguage

English

Publisher

ieee

Conference_Titel

Artificial Intelligence for Applications, 1994., Proceedings of the Tenth Conference on

Conference_Location

San Antonia, TX

Print_ISBN

0-8186-5550-X

Type

conf

DOI

10.1109/CAIA.1994.323697

Filename

323697