摘要
针对一种新型压电舵机的微位移放大机构,提出一种基于刚度分析的设计方法。阐述了压电舵机的组成及工作原理,并推导出压电舵机数学模型,分析微位移放大机构结构参数对压电舵机系统性能的影响,进而确定了柔性铰链的设计原则。对5种单轴柔性铰链的刚度特性进行分析,得到了柔性铰链刚度比的变化曲线,并采用有限元分析的方法对微位移放大机构进行了参数优化设计。仿真分析结果表明,该种方法对于压电舵机微位移放大机构的设计十分有效。
A design method of micro-displacement amplifier in a novel piezoelectric servo was proposed based on stiffness analysis of flexure hinges.Composition and operating principle of the servo was represented,mathematic model of the servo was deduced,effects of the amplifier＇s structural parameters on the servo＇s performance were analyzed,and the design principle of flexure hinges was determined.Curves of the hinge stiffness ratios were obtained by analyzing stiffness characteristies of the five single-axis flexure hinges,parameter optimization design of the amplifier was performed by finite element analysis method.The simulated results show that the design method used for designing the amplifier is effective extremely.
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2009年第12期1653-1657,共5页
Acta Armamentarii
关键词
机械学
压电舵机
微位移放大机构
刚度
mechanics piezoelectric servo micro-displacement amplifier stiffness
