一种低速连续旋转SMA电机的设计与试验

Design and experimental study of a SMA motor with low speed and continuous rotation

利用形状记忆合金(SMA)的记忆特性设计了一种低转速,可连续旋转的电机;利用Liang-Rog-er本构模型进行了SMA-弹簧的旋转位移驱动器的设计以及电机扭矩和转速的设计;完成了SMA电机的机械结构设计;完成了控制规律设计;进行了性能试验.研究结果表明,在试验温度27℃下,用6 V恒压电源驱动的SMA电机实现了连续旋转,转速为0.03 rad/min.SMA电机转速低,扭矩大,功率密度高,可连续旋转,有很大的工程应用潜力.

A continuously rotating motor actuated by shape memory alloys （SMA） wires was designed, which rotates with a low speed and high torque. Liang-Roger constitutive model was used to design the SMA wire-spring actuator. Based on the actuator, the mechanical structure and control system were designed. Finally the motor was tested and it shows that： the SMA motor can rotate continuously with the speed of 0.03 rad/min under 6 V constant power supply at 27 ℃ It is concluded that the new motor, which is actuated by SMA wires owning the characteristics of low rotating speed, high torque and high power density, has a potential use in industry application.