Smart Structures and Systems

  • 제23권4호
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  • Pages.319-327
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  • 2019
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  • 1738-1584(pISSN)
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  • 1738-1991(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

A harmonic movable tooth drive system integrated with shape memory alloys

  • Xu, Lizhong (Department of Mechanical Engineering, Yanshan University) ;
  • Cai, Zongxing (Department of Mechanical Engineering, Yanshan University) ;
  • He, Xiaodong (Department of Mechanical Engineering, Yanshan University)
  • 투고 : 2016.04.21
  • 심사 : 2019.03.12
  • 발행 : 2019.04.25
⟨ 이전 논문 다음 논문 ⟩

초록

Continuous rotating SMA actuators require motion conversion mechanisms, so their structure is relatively complex and difficult to realize the miniaturization. Here, a new type of continuous rotating actuator driven by SMA is proposed. It combines the movable tooth drive with SMA drive. The structure and working principle of the integrated movable tooth drive system is introduced. The equations of temperature, stress and strain of memory alloy wires, and the output torque of drive system are given. Using these equations, the temperature, the output forces of the SMA wires, and output torque of the drive system are studied. Results show that the compact drive system could give large output torque. To obtain large output torque plus small fluctuation, large eccentricity and small diameter of the SMA wire should be taken. Combined application of ventilation cooling and high current can increase the rotary speed of the drive system.

키워드

과제정보

연구 과제 주관 기관 : Natural Science Foundation of China

참고문헌

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