形状记忆合金力学性能及在变体结构中的应用研究  

Study on Mechanical Properties of Shape Memory Alloys and Their Application in Variant Structures

作　　者：陈杰 李俊远 CHEN Jie;LI Junyuan(Aviation Key Laboratory of Science and Technology on Fault Diagnosis and Health Management,Shanghai 201601,China;AVIC Shanghai Aero Measurement-Controlling Research Institute,Shanghai 201601,China)

机构地区：[1]故障诊断与健康管理技术航空科技重点实验室,上海201601 [2]航空工业上海航空测控技术研究所,上海201601

出　　处：《测控技术》2024年第5期34-41,共8页Measurement & Control Technology

摘　　要：形状记忆合金(Shape Memory Alloys,SMA)由于其特有的形状记忆效应(Shape Memory Effect,SME)被大量研究和广泛应用。基于SMA的Müller-Achenbach-Seelecke模型进行了单根SMA丝的回复力数值计算验证,并设计了一种SMA丝驱动器应用于机翼变后掠角结构中,完成了机翼连续后掠偏转的原理、方案和具体的结构设计,并加工制备了后掠机翼模型;同时为了实现机翼后掠角变化的精确控制,采用PID控制方法设计了SMA温度与偏转角度双路信号反馈的闭环控制系统,完成了对机翼偏转的控制。实验结果表明,机翼可实现45°的偏转,偏转至设定角度后的平均稳态误差控制在±0.3°以内,实现了对偏转角度的精确控制。Shape memory alloys(SMA)have been extensively studied and applied because of their unique shape memory effect(SME).Based on the the Müller-Achenbach-Seelecke model of SMA,the return force of a single SMA wire is verified by numerical calculation,and a SMA wire actuator is designed and applied to the wing with integrated variable sweep angle structure.The principle,scheme and specific structure design of the wing continuous sweep deflection are implemented,and the swept back wing model is fabricated.At the same time,in order to realize the precise control of wing sweep angle change,PID control method is used to design a closed-loop control system with double-way signal feedback of SMA temperature and deflection angle,and the control of wing deflection is completed.The experimental results show that the wing can achieve 45°deflec-tion,and the average steady-state error after deflection to the set angle is controlled within±0.3°,so the de-flection angle can be accurately controlled.

关 键 词：形状记忆 变体 后掠翼 PID 

分 类 号：V275.1[航空宇航科学与技术—飞行器设计] V267