2009 Fiscal Year Final Research Report
The improvements of temperature-response of shape memory alloy and the trial manufacture of the three-dimensional positioning system.
| Project/Area Number |
19560095
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Materials/Mechanics of materials
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| Research Institution | Oita University |
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Principal Investigator |
SAKUMA Toshio Oita University, 工学部・福祉環境工学科, 教授 (10371303)
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| Co-Investigator(Kenkyū-buntansha) |
YAMAMOTO Takaei 大分大学, 工学部・機械・エネルギーシステム工学科, 助教 (20295166)
CHO Hiroki 大分大学, 工学部・福祉環境工学科, 助教 (00435421)
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| Project Period (FY) |
2007 – 2009
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| Keywords | 形状記憶合金 / 温度応答性 / 加工率 / 熱処理 / アクチュエータ / 抵抗値フィードバック制御 / 位置制御 |
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| Research Abstract |
It is effective for improving the temperature response of SMA actuator to raise the heat treatment temperature of the SMA elements or to give long-term low temperature aging treatment of elements. And the ribbon shaped element with large superficial area is more effective for improving temperature response than wire element. The resistance feedback control system using the method of setting off-time has proposed that positioning can be set and retained at an arbitrary position. The effect of positioning characteristics on control distance and external loads are investigated. Furthermore, the new resistance control system without setting off-time has proposed. This new system can be controlled position with accuracy less than 10μm. New kinetics and constitutive equations which are available to plastic deformation region and the heat transfer model in consideration with ambient temperature and phase transformation latent heat have proposed and the displacement with time is simulated by these equations and model. The calculation results coincide with those of experiments well. The three-dimensional positioning system using these techniques was produced and its operability and controllability were inspected.
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Research Products
(16 results)
