基于弹性平均原理的柔性机构精度设计及稳健性评估方法

项目名称： 基于弹性平均原理的柔性机构精度设计及稳健性评估方法

项目编号： No.51305022

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 机械、仪表工业

项目作者： 李守忠

作者单位： 北京科技大学

项目金额： 25万元

中文摘要： 从工程应用的角度看，精度和稳健性是反映柔性机构优劣的重要考察指标。本项目旨在研究基于弹性平均原理的柔性机构精度补偿以及稳健性设计方法，作为对现有柔性机构创新设计方法的有益补充。为此首先对弹性平均的原理进行解析，归纳出设计准则；其次从柔度矩阵出发，建立柔度与精度之间的映射机制，并基于弹性平均理念开展柔性机构的精度补偿设计研究；再结合弹性平均等现代设计理念，建立稳健性的评价，进而探讨柔性机构的稳健性设计方法。最后，通过一种面向精密定位的三自由度新型柔性机构样机的研发和性能测试，验证理论成果。 本项目研究成果对丰富和完善柔性机构学理论，指导柔性机构的创新设计和工程应用具有积极意义。

中文关键词： 柔性机构；寄生运动；弹性平均；驱动空间；

英文摘要： From the engineering application perspective, accuracy and robustness are two most important indicators in performance of compliant mechanisms.This project aims at studing the accuracy compensation and robust design of compliant mechanisms based on elastic averaging, it can be regarded as the supplement to creative design methods of compliant mechanisms. For this purpose, the principle of elastic averaging is analyzed firstly, and the design rules are concluded. Secondly, the mapping between compliance and accuracy is established, then the accuracy compensation design of compliant mechanism is researched based on elastic averaging. Thirdly, the indicator system for evaluating robustness is built by applying the concept of elastic averaging, then robust design method of compliant mechanisms is discussed. Finally, a novel 3-DOF flexure prototype oriented to precision positioning is developed and tested to demonstrate theoretical achievements. The research achievements from this project pay positive effect to enrich the theory of compliant mechanism and guide the creative design and engineering application of compliant mechanism.

英文关键词： flexure mechanism；parasitic motion；elastic averaging；actuation space；