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Design and characteristics of shape memory alloy flexible actuator

The paper is intended to overcome the disadvantages of traditional shape memory alloy (SMA) actuator, such as complex structure, the high requirements of installation position and slow response speed. Using the one-way shape memory effect of shape memory alloy wire, a biased two-way flexible actuator with external flexible support was designed. The theoretical feasibility of the design is verified by the establishment of the model and theoretical analysis of the actuator. On the basis of theoretical analysis, experimental verification was carried out, and compared with the theoretical analysis results, the driving characteristics of the actuator were obtained, and the practical feasibility of the actuator was verified.