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惯性冲击驱动管内移动机器人设计(英文) 被引量:5

A piezoelectric in-pipe micro robot actuated by impact drive mechanism
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摘要 设计了一种以压电双层膜为基本结构,通过惯性冲击原理达到运动驱动目的的管内移动机器人。该机器人主要由一个典型的压电双层膜结构和惯性质量串联构成。工作时,压电双层膜的变形由惯性冲击转化为整体结构的直线位移。从理论上分析了惯性冲击原理的核心问题:惯性冲击力与管壁和机器人之间摩擦力的关系,并通过MATLAB和AN-SYS等软件对整个系统的动态响应做了仿真。相关的验证表明,所设计的管内移动机器人运动步长可以达到0.15μm,具有精密运动和高效率的优点,可以在工业中广泛应用。 A piezoelectric in-pipe micro robot with bimorph structure and actuated by the Impact Drive Mechanism(IDM) theory is presented in this paper. The basic structure of this actuator is composed of two piezoelectric bimorph sheets and an inertia mass connected in series. While operating, the deflection of the two piezoelectric bimorph sheets is translated into linear movement by the IDM to com- plete the system actuation. As the essence of the IDM theory, the relationship between the inertia impact force generated by the deflection of the bimorph sheets and the friction between moving body and pipe inwall is analyzed theoretically. Then, the dynamic performance of the system is simulated both by MATLAB and by ANSYS. The results show that the step displacement could be minified to 0.15 μm, and the proposed actuator is higher accurate and higher efficient for medical and industrial applications.
出处 《光学精密工程》 EI CAS CSCD 北大核心 2008年第12期2320-2326,共7页 Optics and Precision Engineering
基金 Supported by the National Natural Science Foundation of China(No.50675132) the National 863 High Technology Research and Development Program of China(No.2006AA4Z334) the Science & Technology Commission of Shanghai Municipality(No.07PJ14051)
关键词 管内移动机器人 压电双层膜 惯性冲击原理 摩擦模型 有限元分析 in-pipe micro robot piezoelectric bimorph Impact Drive Meehanism(IDM) friction model Finite Element Analysis (FEA)
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共引文献43

同被引文献55

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