The development of the position/torque control system using the shape-memory alloy and development of the design support tool

2014 Fiscal Year Final Research Report

• Project/Area Number: 24560298
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Intelligent mechanics/Mechanical systems
• Research Institution: Oita University
• Principal Investigator: SAKUMA Toshio 大分大学, 工学部, 客員教授 (10371303)
• Co-Investigator(Kenkyū-buntansha): YAMAMOTO Takaei 大分大学, 工学部, 助教 (20295166)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 形状記憶合金 / アクチュエータ / 位置制御 / トルク制御

Outline of Final Research Achievements

We developed the phase transformation behavior prediction model for predicting macro phase transformation behavior of the polycrystal shape memory alloy without directly referring to crystal orientation, transformation plane and transformation direction. The model could calculate the various thermomechanical response of shape memory alloy including the shape memory effect. We developed the uniaxial inch worm mechanism that could largely increase control distance. The uniaxial inch worm mechanism worked well. We developed the position/torque control system of shape memory alloy actuator which feeds back the deviation between a setting resistance value and the measurement resistance value. The control system could prevent overload of the SMA.

Free Research Field

機能材料