摘要
模拟测头导向机构的特性对测头导向精度具有较大的影响,在考虑导向簧片非线性、大变形特点的基础上,提出一种测头导向机构动力学建模新方法.根据Bernoulli-Euler方程,结合伪刚体模型,求得系统的动力学方程.建立模拟测头导向机构固有频率与导向簧片几何参数之间的关系,通过实例分析验证该方法的有效性,为平行簧片导向机构的设计提供理论依据.
The precision of probe was affected by the characteristics of the guided mechanism. With consideration of nonlinearity and finite deformation, a new method for dynamic modeling was put forward. This paper proposes the dynamic equation of the guided mechanism based on principle of Bernoulli＇Euler equation and pseudo rigid body model. On this basis, the relation between natural frequency and geometric parameters of guide spring of has been developed. Finally, the validity of this model is verified by experiments. The results provide a theoretical basis for the guided mechanism of the parallel springs.
出处
《西安工业大学学报》
CAS
2010年第2期130-133,共4页
Journal of Xi’an Technological University
关键词
动力学建模
导向精度
伪刚体
导向簧片
固有频率
dynamic modeling
guiding accuracy
pseudo rigid body
guide spring
natural frequency
