Young双稳态机构的建模及组合形成三稳态的方法研究

发布时间：2019-02-27 20:38

【摘要】：柔性稳态机构不仅由运动副传递运动,还至少从其柔性构件变形中获得一部分运动,在不受外力或者受较小干扰情况下机构可以稳定的停留在稳态位置。它可以应用于开关、阀门等多种产品,且具有减小摩擦、装配简单等多个优点。本文利用1R与3R伪刚体模型方法分析了Young双稳态机构的能量方程,并用虚功原理与ANSYS软件分析了其受力情况,重点提出了一种在预应变的情况下,反向串联装配两个相同的Young双稳态机构来构造柔性三稳态机构的设计方法。这种新型柔性三稳态机构称为双Young三稳态机构(简称DYTMs),并通过加工的一般Young双稳态机构原理样机验证该设计方法的可行性,然后基于粒子群优化算法(PSO)优化设计了确保三稳态位置明显及满足特殊要求的新双Young三稳态机构。本文另外对双稳态及三稳态柔性机构做了综合分析,主要研究了可以表示双Young三稳态机构力矩方程的多项式形式,并总结该多项式力矩方程具有三稳态的条件。
[Abstract]:The flexible steady-state mechanism not only transfers the motion by the motion pair, but also obtains at least part of the motion from the deformation of its flexible member. The mechanism can stay in the steady state position stably without external force or less interference. It can be used in switches, valves and other products, and has many advantages such as reducing friction, simple assembly and so on. In this paper, the energy equation of Young bistable mechanism is analyzed by using the method of 1R and 3R pseudo-rigid body model, and the force condition of the bistable mechanism is analyzed by virtual work principle and ANSYS software. Two identical Young bistable mechanisms are assembled in reverse series to construct a flexible tristable mechanism. This new flexible tristable mechanism is called double Young tristable mechanism (DYTMs),). The feasibility of the design method is verified by a machined prototype of general Young bistable mechanism. Then based on the particle swarm optimization algorithm (PSO), a new double Young tristable mechanism is designed to ensure that the tristable position is obvious and meet the special requirements. In addition, the bistable and tristable flexible mechanisms are comprehensively analyzed in this paper. The polynomial form which can represent the torque equation of the bistable Young tristable mechanism is studied, and the conditions of the tristable state of the polynomial torque equation are summarized.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH112

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