A modulation package tuning machine applying fuzzy logic

  • Akio Ukita
  • Toshio Kitagawa
Euzzy Logic and Control
Part of the Lecture Notes in Computer Science book series (LNCS, volume 604)


A tuning machine, developed to tune the analog circuits in a micro-wave modulation circuit board, is presented. The machine's purpose is to tune the circuits automatically. This tuning is conventionally carried out by highly experienced workers. To choose the most appropriate trimmer resistance among the candidates which give good characteristics for the circuits, a method involving fuzzy logic is used.

To develop an appropriate process for choosing the trimmer, at first, the human experts' tuning know-how was utilized.

The prototype machine can tune the circuits within a specific time limit, which is almost equal to that employed by human experts.


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    M. Sugeno, An Introductory Survey of Fuzzy Control, Information Science, 36, PP59–83Google Scholar
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    H. Akahori, Y, Egusa, T. Takagi, N. Wakami and S. Kondo, Self-Tuning Method of Fuzzy Reasoning by Optimization Technique and its Application to Vehicle Control, 5th Fuzzy System Symposium (Kobe, 1989) 77–81Google Scholar
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    M. Maeda, Y. Maeda, and S. Murakami, Fuzzy drive control of an autonomous mobile robot, Fuzzy Sets and Systems 39(1991) 195–204CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1992

Authors and Affiliations

  • Akio Ukita
    • 1
  • Toshio Kitagawa
    • 1
    • 2
  1. 1.Production Eng. Dev. Lab.Japan
  2. 2.Microwave Satellite Communication Dep.NEC CorporationKawasakiJapan

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