考虑性能退化的机构系统动力学理论与实验研究

项目名称： 考虑性能退化的机构系统动力学理论与实验研究

项目编号： No.51275404

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 机械、仪表工业

项目作者： 刘宏昭

作者单位： 西安理工大学

项目金额： 85万元

中文摘要： 对现有的磨损模型进行分析归纳，从理论上阐明其区别与联系以及应用范围。探索在真实工作状况下，较大的压强和运动速度范围内，机构运动副的磨损规律。揭示在SF6气氛环境下机构运动副磨损失效的机理。获取机构运动副磨损的基础数据，完善和发展磨损模型。建立考虑运动副和工作界面磨损与机构动力特性相互耦合影响，可对弹性机构系统性能退化规律进行模拟分析的非线性动力学方程，给出有效的数值求解方法。探索将连杆机构与电动加载有机集成，用于机构性能退化试验的模拟加载装置的设计理论与控制技术。对机构系统性能退化特征量进行测试，基于试验数据建立其性能退化轨迹模型。分析机构系统性能退化特征量与结构和工况参数之间的关系，给出提高机构系统性能裕度的途径。形成保证机构系统整个服役周期内性能可靠的设计理论方法，将其应用于巨型高压断路器操动机构系统设计。提高机构系统动力学研究的理论水平和解决实际问题的能力。

中文关键词： 磨损；运动副；机构动力学；性能退化；

英文摘要： Based on the analysis of the existing wear models, this project will expound the differences and relations and application scope of the wear models in theory. The wear law of kinematic pair in mechanism in the real working condition, under larger pressure and speed range, will be explored. The wear failure mechanism of kinematic pair in the environment of SF6 atmosphere is to be revealed. Then, the wear model will be improved and developed through collecting and analyzing the wear failure basic data of kinematic pair. The nonlinear dynamic equation of elastic linkage mechanism, used for performance degradation analysis and considering the coupling effects between wear of kinematic pair as well as working interface and dynamic characteristics, will be established. Meanwhile, an efficient numerical method for solving the nonlinear dynamic equation will be put forward. The design theory and control strategy for a loading analog device combining the advantage of linkage mechanism and electric loading technology, used for performance degradation test of mechanism, will be studied. The experiment for measuring the character quantity of performance degradation of mechanism is to be carried out, and the theory model for performance degradation trajectory will be formulated based on the test data. The relationship betwe

英文关键词： wear；kinematic pair；dynamics of mechanism；performance degradation；