关键词: 形状记忆合金, 差动驱动器, 运动原理, 热力学性能, 多目标优化

Abstract:

A kind of SMA differential drive method and its experimental equipment was presented,which can be used in swing joint of micro underwater vehicles. The motion principles of the swing joint differential driven by SMA were analyzed. According to thermodynamic performance of the SMA actuator with different structural parameters in various driving conditions and environments, experimental researches and analyses on the response ability, driving force and energy consumption of the SMA actuator were carried out. The multi-objective optimization theory and algorithms were adopted for the comprehensive optimization of the SMA actuator. At last, the optimal structural parameters and driving values of the SMA actuator fitting for the application conditions are achieved.

Key words: shape memory alloy(SMA), differential actuator, motion principle, thermodynamic performance, multi-objective optimization