著者

森口 肇 市川 修 田川 泰敬

出版者

一般社団法人 日本機械学会

雑誌

日本機械学会論文集 (ISSN:21879761)

巻号頁・発行日

vol.84, no.863, pp.17-00580, 2018 (Released:2018-07-25)

参考文献数

12

被引用文献数

2

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In recent years, electronic control has become mainstream of pneumatic control systems. But pneumatic positioning systems have advantages such as explosion proof, operable even at power failure, simple structure, easier maintenance, and low price. Therefore, with fusion of mechanical feedback technology and latest technology, it is possible to realize an advanced system required for realize a safe and secure society, and it can be expected to be applied in a wide field in the future. In this study, we aim to develop advanced system incorporating pneumatic positioning systems with mechanical feedback, we propose a model of the pneumatic positioning systems with mechanical feedback, perform characteristic analysis using the model, and evaluate the effectiveness of the model by comparing with the experiment result. In this paper, step response experiments were carried out using three different sizes of cylinders, and the results of the step response experiment and the simulation were compared. As a result, except for high input pressure, the transient characteristics of both were in good agreement. Therefore, it proved that the proposed model is effective for analyzing the transient characteristics of the system incorporating pneumatic positioning systems with mechanical feedback. We also obtained the prospect that the characteristics analyzed using the proposed model can be used for developing new applications.

著者

岡本 峰基 田川 泰敬

出版者

一般社団法人 日本機械学会

雑誌

日本機械学会論文集 (ISSN:21879761)

巻号頁・発行日

vol.83, no.855, pp.17-00277-17-00277, 2017 (Released:2017-11-25)

参考文献数

13

被引用文献数

1

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Vibration testing using a shaking table is a useful method to examine the vibration characteristics such as aseismic capacity of buildings for earthquakes and ride comfort of vehicles for vertical vibration. However, it’s necessary to design a controller which can reproduce the vibration such as earthquake waves accurately. Moreover, since there are various types of earthquakes such as a long-period earthquake and short-period earthquake, a controller with good tracking performance on wide frequency range is required in order to reproduce earthquake waves. Generally, a displacement feedback controller is employed in a control of the shaking table. However, almost all earthquake waves are saved as acceleration data. Therefore, an acceleration feedback controller is more proper to control the shaking table. The purpose of this study is to design an acceleration feedback control system with good tracking performance until high frequency range. However, it generates spillover caused by dynamics that is not included in plant model. As a result, the tracking performance of the controller degrades. So, we also proposed the method which can suppress spillover to solve this problem. The controller is designed based on Dual Model Matching method. Then, effectiveness of proposed control system is validated by experiments using 3degree-of-freedom shaking table.

著者

早津 昌樹 山田 学 田川 泰敬 山口 大助

出版者

一般社団法人日本機械学会

雑誌

日本機械学會論文集. C編 (ISSN:03875024)

巻号頁・発行日

vol.68, no.671, pp.2009-2015, 2002-07-25

被引用文献数

2

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This paper mainly focused on the control system design and the control performance of the power assist lifting device used in power plant construction site. This device consists of several electric-chain-blocks, force sensors and a CPU. This mechanism is as follows. (1) Force sensors detect chain tension changes by human force. (2) The CPU calculates the required outputs from the force sensors. (3) Electric-chain-blocks move the object in the intended direction by human force. The control performance was verified through experiments using a 300 kg boiler panel that was suspended by the 2 electric-chain-blocks. A heavy control object could be moved, translated and rotated by human force using the proposed device. Positioning performance errors were suppressed to under 1 mm.

著者

田川 泰敬 梶原 浩一 佐藤 栄児 梶原 浩一 佐藤 栄児 P. STOTEN David

出版者

東京農工大学

雑誌

基盤研究(B)

巻号頁・発行日

2007

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振動試験装置に大型の試験体(構造物)を載せ耐震実験などを行う場合、振動台は搭載構造物から大きな力を受け、振動台の動きは目標のそれとは大きく異なったものとなる。これにより、多大な費用をかけた実験において有効なデータが得られない問題がある。そこで、本研究では、実際の大型振動台の挙動を精度よく模擬できる振動台を作成し、我々がこれまで提案してきた種々のモデル化および制御手法を、この装置に適用することにより、大型振動台を用いた実システムの有効な加振実験手法の確立のための基礎を固めることに成功した。