数字化量可控自动注射仪的试验研究

【作者】 邢学松；

【导师】 章维一；

【作者基本信息】 南京理工大学 ， 机械电子工程， 2004， 硕士

【摘要】 本硕士学位论文论述了一种使用压电元件来产生精确运动的方法。这种方法是利用移动体与固定的基平面之间的摩擦力以及由压电元件动态的急速变形所产生的惯性力的反作用力来产生精确运动的。通过控制压电陶瓷的急速变形，可以控制惯性力的大小，从而控制从几纳米到几十微米的步进运动。基于这一工作原理，我们研制了在生物医药学上可用于临床静脉注射、介入治疗、新药研制、蛋白质组工程、基因工程和诊断学的数字化量可控自动注射仪。为了提高这种机构的驱动能力，我们制作了几种基于这一原理的转变形式。最终选择了垂直摩擦副重力预载机构。 由于许多流量测量的工作原理不能同比例地缩小用来测量微小流量，我们采用了一种新的方法来测量输出流量的体积。同时，为了测量移动部件的步进位移，我们设计搭建了基于CCD的微小位移测量系统。此外，还对各种实验数据做了一定的分析。更多还原

【Abstract】 This paper describes a method of precise moving using piezoelectric elements. The method utilizes the friction force between the object to be moved and the fixed base plane, and the reaction of the inertial force caused by a dynamic rapid deformation of a piezoelectric element. Through controlling the rapid deformation of the piezoelectric element, we can control the inertial force, which causes a controlled step-like movement of some nanometers up to some ten-micrometers. Based on this moving principle, we developed Digital and flow controllable autoinjector with wide range of applications in biomedical science such as clinical venous injection, interventional therapy, drug discovery, proteomics, genomics and diagnostics. We fabricated some mechanical transfigurations in order to raise the ability of driving. The final version was with vertical friction pair and gravitational preload.Because many working principles for flow measurement cannot be scaled down to very small dimensions, we have developed a new method to measure the output volume. At the same time, to measure the step-like movement of the moving part, the micromeasure system-based on CCD for microdisplacement is designed. Furthermore, the experiment data are analyzed to some extent.更多还原