This paper presents the design, physical modelling and testing of electromechanical logic elements using shape memory alloy (SMA) wire actuated hinged beam switches. Microelectromechanical system logic devices actuated by electrostatic, pneumatic and electrothermal actuation mechanisms are used as alternatives to the conventional logic systems for harsh operating conditions such as ionizing radiations and high temperature. Microoptoelectromechanical system logic device actuated by electrothermal cantilevers can be used in the same applications. Mechanical logic units using linkages and joints in automobiles require an appropriate actuation mechanism. The actuation mechanism used in each case is inherent to typical limitations and design complexity. This work contributes to the evolution of the mechanical logic design architecture to present simplicity to the logic system, involving SMA actuated hinged beam switches. The performance of the SMA hinged beam switch is evaluated by assessing the minimum current required for the actuation of the SMA to reduce the switching delay; also the switching transients during ON and OFF are observed for a static input. The functionality of basic electromechanical logic elements composed using SMA hinged beam switch is verified.

中文翻译：

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使用形状记忆合金线致动器的机电逻辑元件的结构设计与实现

本文介绍了使用形状记忆合金 (SMA) 线驱动铰链梁开关的机电逻辑元件的设计、物理建模和测试。由静电、气动和电热驱动机制驱动的微机电系统逻辑器件被用作传统逻辑系统的替代品，用于恶劣的操作条件，例如电离辐射和高温。由电热悬臂驱动的微光机电系统逻辑器件可用于相同的应用。在汽车中使用连杆和关节的机械逻辑单元需要适当的驱动机构。在每种情况下使用的驱动机制都是典型的局限性和设计复杂性所固有的。这项工作有助于机械逻辑设计架构的发展，以呈现逻辑系统的简单性，包括 SMA 驱动铰链梁开关。SMA铰链梁开关的性能通过评估驱动SMA以减少开关延迟所需的最小电流来评估；对于静态输入，还观察到 ON 和 OFF 期间的开关瞬变。验证了使用 SMA 铰链梁开关组成的基本机电逻辑元件的功能。