学会発表

機械創成
教授 古谷克司

掲載年度 2010
種類 国内
学会名 第22回電磁力関連のダイナミクスシンポジウム
発表題目 微小物体の把持検出機能を持つマイクロマニピュレーション用ピンセット
発表者 古谷克司
牧野泰三(2008年度修士修了;現,デンソー)
主催団体 日本機械学会
発表場所 北九州市門司区・門司港ホテル
発表日 2010/05/20
講演内容 This report deals with tweezers using bimorph piezoelectric actuators for micromanipulation. It measures 51 mm×24 mm×10 mm and weighs 62 g including electric cables of 27 g. Each finger consists of a bimorph piezoelectric actuator with a stainless steel tip. One of the tweezers (vibrator) is oscillated by rectangular wave at its resonance frequency, and another (receiver) detects the vibration. When the tweezers grasp an object, the receiver also vibrated through the object. By using a lock-in amplifier with a reference signal, noise components can be eliminated. The tweezers grasp and release objects by driving both the actuators. The resonance frequency was analyzed by finite element method and experiments. They almost agreed each other. Glass beads with a diameter of 60-70 μm could were grasped. The tweezers were used for micromanipulation.
Key words: piezoelectric actuator, glass beads, modal analysis, resonance frequency, lock-in amplifier