Development of Small-sized Fluid Control Valve with Self-holding Function Using Permanent Magnet

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概要

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• Recently, force feedback devices in virtual reality and power assisted nursing care systems have received much attention and active research. In such a control system, an actuator and a driving device such as a control valve are mounted on the human body. In this condition, the size and weight of the control valve become serious problems. At the same time, the valve should be operated with lower energy consumption because of using a limited electrical power. The typical electro magnetic solenoid valve drives its spool using a larger solenoid to open the valve. The complex construction of the valve for sealing makes its miniaturization and the fabrication of a low cost valve more difficult. In addition, the solenoid in the valve consumes more electrical power while the valve is kept opening. The purpose of our study is to develop a small-sized, lightweight, lower energy consumption and flexible control valve that can be safe enough to mount on the human body at a lower cost. In our pervious study, we proposed and tested the control valve that can open using a vibration motor. In this study, we propose and test a new type of fluid control valve with a self-holding function. The new valve uses a permanent magnet ball. It has a cylindrical magnet and two solenoids. The self-holding function of the valve is done as follows. When one side of the solenoid is stimulated by the current momentarily, the solenoid gives a repulsive force to the cylindrical magnet. The magnet moves toward the opposite side of the solenoid and is attracted to the iron core. Then, the magnet ball moves toward the cylindrical magnet and opens the orifice. The valve can keep open without electrical energy. As a result, the valve with the extremely lower energy consumption can be developed.

著者

• AKAGI Tetsuya

  Department of Intelligent Mechanical Engineering, Okayama University of Science

• DOHTA Shujiro

  Department of Intelligent Mechanical Engineering, Okayama University of Science

• UEDA Hirofumi

  Graduate School of Engineering, Okayama University of Science

• Akagi Tetsuya

  Department Of Electronics And Control Engineering Tsuyama National College Of Technology

関連論文

• Development of Opto-Pneumatic On/Off Control Valve
• Development of Small-sized Fluid Control Valve with Self-holding Function Using Permanent Magnet
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• Studies on Opto-Pneumatic Servo System : Extension to a Normal Scale Control System
• Development of Flexible Pneumatic Cylinder with Built-in Flexible Linear Encoder and Flexible Bending Sensor
• Development of Small-Sized Servo Valve Controlled by Using Buckled Tube and Its Application

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