On the fine balance with displacement sensor

浅谈位移传感器的精平衡

• 批准号: 05555052
• 负责人: YOSHIMURA Yasuo
• 金额: $ 1.28万
• 依托单位: Tokyo Nationl College of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (B)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-05555052/
• 关键词: Balance; Parallel Spring; Sensitivity; Displacement; Gap sensor; Elastic hinge; Ideal point; Dimensional error; 動剛性; 質量; 静剛性; 精度; ヒンジ; 変位誤差; 寸法誤差; 無接触センサ

The study conducted in 1994 is concerned with the following two subjects,1) The effect of the dimensional error of the hinge on the mass and the dynamic rigidity2) On the displacement detecting type balance with high sensitivity1. The effect of the dimensinal error of the hinge on the mass and the dynamic rigidityThe experiments are repeatedly done on the effect of the dimensional error on the mass, using a prototype balance with dimensions of 54 high, 62 wide and 8mm thick.(1) The fact that around 3/8 of the dimensional error in thickness contributes to the mass to be measured is confirmed in order to highten the dynamic rigidity.(2) It necessities to make hinge stiff and reduce mass of reinforceing plate and the stage.2. On the displacement detectig type balance with high sensitivity.The manufactured fine balance with high sensitivity consists of 5 flat plates (dimensions : 50mm high, 12 thick and 50 wide) made of aluminum. In order to design a balance with high sensitivity, all the plates are combined in series. The facts made clear in this study are ;(1) The displacement at the ideal point remains ideally unchanged regardless of the loading position. The actual displacement, however, changes in according with the location of loading, leading to the error of the mass to be measured.(2) The balance concerned is too stiff to achieve the expected accuracy of 1/10,000. It is required to improve further more the sensitivity(3) The balance necessities to be modified because of the torsional weakness.

1994年进行的研究涉及以下两个课题：1）铰链尺寸误差对质量和动刚度的影响; 2）位移检测型高灵敏度天平1。铰链的尺寸误差对质量和动刚度的影响用一台高54、宽62、厚8 mm的天平样机，反复进行了铰链尺寸误差对质量和动刚度影响的实验。(1)为了提高动态刚度，确认了厚度尺寸误差的3/8左右贡献于被测质量的事实。(2)需要增加铰链刚度，减少加强板和工作台的质量.在位移检测式高灵敏度天平上，研制的高灵敏度精密天平由5块铝合金平板（高50 mm，厚12，宽50 mm）组成。为了设计一个高灵敏度的天平，所有的板都串联在一起。研究表明：（1）理想点处的位移在理想状态下保持不变，而与加载位置无关。但实际位移随加载位置的变化而变化，从而导致被测质量的误差。(2)有关天平太硬，无法达到预期的万分之一的精度。灵敏度有待进一步提高。（3）由于天平的扭转薄弱，需要对天平进行改进。

项目成果

Y.YOSHIMURA: "Displacement Characteristics of One-peice Parallel Spring Movement for Balance(7th Report)" Int.J.of JSPE. Vol.28 No.4. 346-351 (1994)

Y.YOSHIMURA：“平衡用一体式平行弹簧运动的位移特性（第七次报告）”Int.J.of JSPE。

Y.YOSHIMURA: "Displacement Characteristics of One‐piece Parallel Spring Movement for Balance(6th Report)" International Journal of the Japan Society for Precision Engineering. Vol.28 No.3. 255‐260 (1994)

Y. YOSHIMURA：“平衡用一体式平行弹簧运动的位移特性（第 6 次报告）”日本精密工程学会国际期刊第 28 卷第 255-260 期（1994 年）。

Y.YOSHIMURA: "Displacement Characteristics of One‐piece Parallel Spring Movement for Balance(7th Report)" International Journal of the Japan Society for Precision Engineering. Vol.28 No.4. 346-351 (1994)

Y.YOSHIMURA：“平衡用一体式平行弹簧运动的位移特性（第 7 次报告）”日本精密工程学会国际期刊第 28 卷第 346-351 期（1994 年）。

吉村靖夫: "変位検出型精密はかりの試作研究" 1994年度精密工学会春季大会講演論文集. (1994)

Yasuo Yoshimura：“位移检测精密标尺的原型研究”1994年日本精密工程学会春季会议论文集（1994年）。

Y.YOSHIMURA: "Displacement Characteristics of One-Piece Parallel Spring Movement for Balance(6th Report)" Int.J.of JSPE (Japan Society for Precision Engineering). Vol.28 No.3. 255-260 (1994)

Y.YOSHIMURA：“平衡用一体式平行弹簧运动的位移特性（第 6 次报告）”Int.J.of JSPE（日本精密工程学会）。