摘要
针对医用内窥镜驱动系统 ,提出了一种通过电磁感应加热感应导体、再通过感应导体加热其周围石蜡的无导线热膨胀微型机械驱动器。电磁感应加热不仅加热速度快 ,而且驱动器与驱动源之间无需导线连接 ,使驱动器的使用更加方便。石蜡在其熔点附近具有很大的膨胀系数 ,而且其熔点可以调节 (所用石蜡的熔点在 3 7～ 3 9℃之间 ,适合在人体内使用 )。在对 1 0个不同尺寸的原理性驱动器模型进行位移输出性能试验的基础上 ,制作了 4个可以实现单向运动的驱动器模型 ,并对其运动性能进行了试验 ,其最大平均运动速度可以达到 0 .1 3 9mm/
Aiming at endoscope driving system,a kind of wireless thermal expansion microactuator is designed and actuated by thermal expansion of paraffin, which is heated by a magnetic induction heating thermoseed. Induction heating can heat object rapidly and does not need wire between microactuator and actuating source. Paraffin has a large coefficient of expansion in temperature range near its melting point, and melting point can be regulated easily, the paraffin used here has a melting point ranging from 37 to 39 degrees centigrade, and it can be used in human body. On the basis of study on displacement output of 10 models of fundamental actuator, 4 actuator models are constructed and can be executed to carry out unidirectional movement, and their motion characteristics are tested, the maximal average speed of them is about 0.139 mm/s.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2003年第7期555-559,共5页
China Mechanical Engineering
基金
清华大学中大基金资助项目 ( 2 0 2 5 0 /2 0 0 10 9)
