An Actuating Response Model of Temperature-controlled SMA Actuators

doi:10.3969/j.issn.1004-132X.2023.02.005

China Mechanical Engineering ›› 2023, Vol. 34 ›› Issue (02): 157-163.DOI: 10.3969/j.issn.1004-132X.2023.02.005

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An Actuating Response Model of Temperature-controlled SMA Actuators

LU Youjun1;SONG Di1，2;MIAO Changqing3

1.College of Mechanical and Electrical Engineering，University of Electronic Science and Technology of China，Chengdu，611731
2.Guangdong Institute of Electronic Information Engineering，University of Electronic Science and Technology of China，Dongguan，Guangdong，523808
3.National Key Laboratory of Special Environmental Composite Materials Technology，Harbin Institute of Technology，Harbin，150001

Online:2023-01-25 Published:2023-02-16

温控形状记忆合金的驱动响应模型

鲁友均1;宋迪1，2;苗常青3

1.电子科技大学机械与电气工程学院，成都，611731
2.电子科技大学广东电子信息工程研究院，东莞，523808
3.哈尔滨工业大学特种环境复合材料技术国家级重点实验室，哈尔滨，150001

通讯作者: 宋迪（通信作者），女，1985年生，副教授。研究方向为智能材料力学行为、疲劳与损伤。发表论文20余篇。E-mail：songdi@uestc.edu.cn。
作者简介:鲁友均，男，1995年生，硕士研究生。研究方向为智能材料应用、SMA驱动器、机械设计。发表论文1篇。E-mail：lyj3246682@163.com。
基金资助:
载人航天预先研究专项(040101)；国家自然科学基金（11702060）；四川省科技计划(2020YFSY0015)；广东省基础与应用基础研究基金（2019A1515011319）

Abstract

Abstract: Based on heat transfer theory and actuating geometric relationship， an execution response model of temperature controlled SMA actuator was proposed. The parameter values affected by temperature in the model were dynamically modified to improve the response accuracy of the driving model. When the side number of the regular polygon section of SMA wire was less than 8， the laws of improving the response speed were analyzed and obtained. Based on the results of theoretical analysis， the actuating response of SMA wire with a diameter of 1.2 mm， a length of 10π mm， an initial central angle of 30° was tested under a current intensity of 6A. By comparing the experimental results with the theoretical model calculation results， the max error of the whole actuating processes（actuating end point）reduces to 1.8 s， and the execution response model may accurately describe the actuating response.

Key words: shape memory alloy（SMA）, actuator, shape memory effect, execution response model

摘要： 基于传热学理论和驱动几何关系建立了温控形状记忆合金（SMA）驱动器的驱动响应模型，动态修正了模型中受温度影响的参数值，提高了驱动模型的响应精度，分析并得到了SMA丝正多边形截面边数小于8时提高响应速度的规律。基于理论分析结果，测试了直径1.2 mm、长度10π mm、初始圆心角30°的SMA丝在电流6A下的驱动响应，响应模型的计算结果同实验结果的对比表明，驱动全过程的最大误差（驱动终点）降至1.8 s，模型能较精确地描述驱动过程。

关键词: 形状记忆合金, 驱动器, 形状记忆效应, 驱动响应模型

CLC Number:

TG139.6

LU Youjun, SONG Di, MIAO Changqing. An Actuating Response Model of Temperature-controlled SMA Actuators[J]. China Mechanical Engineering, 2023, 34(02): 157-163.

鲁友均, 宋迪, 苗常青. 温控形状记忆合金的驱动响应模型[J]. 中国机械工程, 2023, 34(02): 157-163.

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An Actuating Response Model of Temperature-controlled SMA Actuators

温控形状记忆合金的驱动响应模型

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