This experimental study aimed to obtain the actuation properties of Shape Memory Alloy (SMA) spring actuators available under the commercial names of Biometal® NiTiCu and KRL® NiTi NiTiCu, NiTiFe. An objective is to characterize the electro-thermo-mechano-electro behavior of shape memory spring through experimentation via simultaneous measurement techniques. These measurements are synchronized by embedding an impedance analyzer and data acquisition module through a unique program. Moreover, to obtain the mathematical model by parts of the SMA spring and equivalent circuit analysis of active spring through their electro-thermo-mechano-electro characteristics exhibited during shape memory effect. Based on the experimental results, the SMA spring’s equivalent circuit is considered a series resistance – inductance circuit. It was found from the experimental results that the Biometal® actuator produced more resistance, inductance variation and offered more displacement as compared to KRL® actuators.

本实验研究旨在获得以 Biometal® NiTiCu 和 KRL® NiTi NiTiCu、NiTiFe 的商业名称可用的形状记忆合金 (SMA) 弹簧致动器的致动特性。一个目标是通过同时测量技术的实验来表征形状记忆弹簧的电-热-机械-电行为。这些测量是通过一个独特的程序嵌入阻抗分析仪和数据采集模块来同步的。此外，通过形状记忆效应过程中表现出的电-热-机-电特性，通过SMA弹簧的零件和主动弹簧的等效电路分析得到数学模型。根据实验结果，SMA弹簧的等效电路被认为是串联电阻-电感电路。