1996 Fiscal Year Final Research Report Summary
The Automatic control of the sawing inaccuracy in band sawing
| Project/Area Number |
07556103
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 試験 |
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| Research Field |
林産学
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| Research Institution | Shimane University |
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Principal Investigator |
TANAKA Chiaki Shimane University Interdisciplinaly Faculty of Science and Engineering. Professor, 総合理工学部, 教授 (30032600)
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| Co-Investigator(Kenkyū-buntansha) |
NISHIGOURI Isam Forest Research Center, Research Head, 研究科長
YOSHINOBU Masahiro Interdisciplinaly Faculty of Science and Engineering, Shimane University Researc, 総合理工学部, 助手 (40273924)
NISHINO Yoshihiko Faculty of Life Environmental Science, Shimane University Lecture., 生物資源科学部, 講師 (50218179)
NAKAO Tetsuya Interdisciplinaly Faculty of Science and Engineering, Shimane University Profess, 総合理工学部, 教授 (00180240)
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| Project Period (FY) |
1995 – 1996
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| Keywords | band sawing machine / saw deviation / automatic control / feed-rate / in process / adaptive control system / fuzzy control system / if-then form |
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| Research Abstract |
The possibility was investigated to prevent saw deviaiton which leads to the sawing inaccuracy produced on the workpiece by the automatic control of workpiece feed-rate in response to the band sawing behavior. The results obtained are summarized as follows :
1) An automatic sawing system, which enabled adaptive control and fuzzy control, was developed using a feed apparatus with a servo moter, a band-sawing machine, a personal computer, and an eddy-current displacement sensor.
2) By monitoring the sawing deviation in process, the sawing inaccuracy produced on the workpiece was possible to understand. As the feed-rate was increased, the saw deviation is increases.
3) An adaptive control sawing system, in which the saw deviation and the feed-rate was chosen as the process variable and the control variable, respectively, reduced the maximum sawing inaccuracy produced on the workpiece to 1/6 of that under the normal sawing.
4) The experiences and methods for the control employed by the experts can be expressed easily by the 「if-then」 form according to the fuzzy control rules.
5) The fuzzy control system showed the better result than the adaptive control system. The fuzzy control system controlled automatically the feed-rate to keep the saw deviation within the allowable range for the various cutting conditions such as wood-species, moisture contents, fiber orientations, knots, width and thickness of workpiece, and tensioning forces.
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Research Products
(8 results)
