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A Method of Obtaining the Maximum Likelihood Initial Height Function for Optimal Movement of a Wire Bonder

Shengping JIANG, Hiroyuki ANZAI

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Summary :

In this paper, we propose a method to simulate the curve surface of the initial height in the movement of the electronic wire bonder using the experimental data. For given measured data (xk, yk, zk (k=1, 2, , m)), we propose an algebraic surface of n-th degree as a methematical model of the initial height surface. The AIC method is a method of evaluating the goodness of a given model. The maximum likelihood model is selected by comparing with the AIC value of each model for n=0, 1, 2, 3, , 11. Useing this model, the initial raise position of the electronic wire bonder can be controlled by computer programing and can make the movement of wire bonder full-automatic. As a resurt, the well-arranged wiring and reliable contacting can be obtained.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E75-A No.9 pp.1134-1140
Publication Date
1992/09/25
Publicized
Online ISSN
DOI
Type of Manuscript
PAPER
Category
Computer Aided Design (CAD)

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