摘要
研制了两种由形状记忆合金(SMA)丝驱动的仿乌贼外套膜结构和一个仿乌贼外套膜喷射推进器,分析了喷射推进方式的突出优点。比较了不同种类智能材料的性能特点,SMA与其它材料相比具有回复应力大、变形量稳定、稳定工作寿命较长等优点。乌贼外套膜呈柔性,由于硅胶具有较好的柔性且性质稳定,采用其作为仿乌贼外套膜结构的基体材料。讨论了乌贼的肌肉性静水骨骼和外套膜肌肉结构。分析了排布角度、筋条数目等参数对喷射推进器性能的影响。制作了不同参数的仿乌贼外套膜结构,其内径收缩应变达到12%。设计了一个仿乌贼外套膜喷射推进器,其外套膜收缩应变达到8.8%,通电后0.8～1.4 s内平均游动速度达到58 mm/s。
Two squid-mantle-like structures and a squid-mantle-like jet propeller actuated by SMA were developed, and the salient advantages of jet propulsion were discussed. Different from other smart materials, SMA has great restoring stress, stable strain and long working life span. Silicone, soft and stable, was adopted as body material to imitate squid man- tle,and the muscular hydrostat and mantle muscle structure were analyzed before the influence discussion of angle arranged and number of framework on propulsion. The experiment indicates that the contraction of mantle prototype was 12%, the mantle contraction of jet propeller was 8.8% and the average swimming speed during 0.8 - 1.4 s was 58 mm/s.
出处
《微特电机》
北大核心
2009年第12期1-5,共5页
Small & Special Electrical Machines
基金
国家自然科学基金资助项目(50775049)
机器人技术与系统国家重点实验室资助项目(SKLRS200805C)
