The Automatic control of the sawing inaccuracy in band sawing

带锯床锯切误差的自动控制

• 批准号: 07556103
• 负责人: TANAKA Chiaki
• 金额: $ 0.32万
• 依托单位: Shimane University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07556103/
• 关键词: band sawing machine; saw deviation; automatic control; feed-rate; in process; adaptive control system; fuzzy control system; if-then form; のこ変位; パターン認識; ファジィ制御システム; ひき曲がり; アコースティックエミッション; 切削力; のこ振動; 自動化; 適応制御

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.

研究了根据带锯床的锯切行为自动控制工件进给速度以防止锯切偏差导致锯切误差的可能性。主要研究结果如下：1）利用伺服电机、带锯床、微机和电涡流位移传感器组成自动锯切系统，实现了自适应控制和模糊控制。2）通过对锯切过程中的偏差进行监测，可以了解工件产生的锯切误差。随着进给速度的增加，锯切偏差也随之增大。3）以锯切偏差为过程变量，以进给速度为控制变量，将工件产生的最大锯切误差降低到正常锯切时的1/6。4）根据模糊控制规则，专家的经验和控制方法可以用“if-then”的形式表示出来。5）模糊控制系统比自适应控制系统具有更好的控制效果。模糊控制系统自动控制进给速度，使锯切偏差在允许的范围内，以适应不同的切削条件，如木材的种类，含水率，纤维的方向，节，工件的宽度和厚度，张紧力。

项目成果

黄 箭波、田中千秋、他: "帯のこ挽き材加工のファジィ制御に関する研究(1)" 木材学会誌. 41(12). 1102-1108 (1995)

Yanbo Huang，Chiaki Tanaka，等：“带锯切木材​​加工的模糊控制研究（1）”日本木工学会杂志41（12）（1995）。

黄 箭波、田中千秋、他: "帯のこ挽き材加工のファジィ制御に関する研究(2)" 木材学会誌. 43(8). 724-732 (1996)

Yanbo Huang，Chiaki Tanaka，等：“带锯切木材​​加工的模糊控制研究（2）”日本木工学会杂志43（8）724-732（1996）。

Chiaki Tanaka and Jianbo Huang: "On-line Control of Bandsaw Feed-Speed Using Fuzzy Logic" Proceedings of the 13th International Wood Machining Seminar, Vancouver. (in press). (1997)

Chiaki Tanaka 和Jianbo Huang：“使用模糊逻辑在线控制带锯进给速度”第 13 届国际木材加工研讨会论文集，温哥华。

Chiaki Tanaka and Jianbo Huang: "On-line Control of Bandsaw Feed-Speed Using Fuzzy Logic" Proceedings of the 12th International Wood Machining Seminar. 412-421 (1995)

Chiaki Tanaka 和Jianbo Huang：“使用模糊逻辑在线控制带锯进给速度”第十二届国际木材加工研讨会论文集。

Chiaki Tanaka and Jianbo Huang: "On-line Control of Bandsaw Feed-Speed Using Fuzzy Logic" Proceedings of the 13th International Wood Machining St. (発表予定).

Chiaki Tanaka和Jianbo Huang：“On-line Control of Bandsaw Feed-Speed Use Fuzzy Logic”第13届国际木材加工圣会论文集（待提交）。