Development of Knowledge Acquisition and Automatic Layout System for Printed Wiring Board Design
Development of Knowledge Acquisition and Automatic Layout System for Printed Wiring Board Design
批准号:
01460148
负责人:
DOHI Takeyoshi
金额:
$3.07万
依托单位:
依托单位国家:
日本
项目类别:
Grant-in-Aid for General Scientific Research (B)
财政年份:
1989
资助国家:
日本
项目状态:
已结题
起止时间:
1989 至 1990
中文摘要
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英文摘要
We have developed an automatic layout system, which acquires layout knowledge from skilled designers' drawings and makes use of it to get satisfactory layout result.Characteristic points in skilled designers' layout strategies are in "clustering" (circuit partitioning), "cluster placement", and bus based methods. Our system acquires knowledge for clustering and cluster placement from skilled designers' layout drawings, and checks contradictions with already fixed rules. In the condition section of each rule, a linear inequality with predictor variables is introduced to judge whether the selected candidates are suitable as an object. Since the coefficients and constants in the linear inequality are determined automatically employing the discriminate function method, conflict resolution between rules from different boards are performed. As a result, the similarity between the system layout result and the manual design has increased according to the number of boards used for knowledge acquisition.Furthermore, we have developed a hierarchical routing method for bus net routing and for taking influences of all nets including unrouted nets into consideration. For high speed processing of the routing algorithm, we have evaluated several multiprocessing architectures, and the hypercube type architecture including tree network has turned out to be the best for implementation.
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G. Odawara :"A Multiprocessor System for Multiple Image Recognition - Application to Automatic Routing System" 10th International Conf. on Pattern Recognition,. 432-435 (1990)
G. Odawara:“用于多图像识别的多处理器系统 - 在自动路由系统中的应用”第 10 届国际会议。
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K.クラスタリングA4/3-1 A4/3-9
K.聚类 A4/3-1 A4/3-9
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T.Fujii: "KAT:Knowledge Acquisition Tool for PWB Layout Expert System" Proc.IFIP Working Conf.on DAD Systems Using AI Techniques. 237-244 (1989)
T.Fujii:“KAT:PWB 布局专家系统的知识获取工具”Proc.IFIP 使用 AI 技术的 DAD 系统工作会议。
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冨田 昌宏: "配線可能性を考慮したグリッドレス配線手法" プリント回路学会誌. Vol.5. 329-336 (1990)
Masahiro Tomita:“考虑布线能力的无网格布线方法”印刷电路学会杂志第 5 卷(1990 年)。
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作者:
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通讯作者:
G.Odawara: "A Multiprocessor System for Multiple Image Recognition Application to Automatic Routing System" 10th International Conf.on Pattern Recognition. 432-435 (1990)
G.Odawara:“用于自动路由系统的多图像识别应用的多处理器系统”第十届国际模式识别会议。
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