组合式仿生自适应阻尼缓冲结构研究

项目名称： 组合式仿生自适应阻尼缓冲结构研究

项目编号： No.51305288

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： 宋勇

作者单位： 太原科技大学

项目金额： 26万元

中文摘要： 大型工程机械是国家经济建设不可或缺的机械装备。为解决其受振动冲击剧烈的问题，基于生物自然进化缓冲机理，提出一种组合式仿生自适应缓冲装置，使其实现"被-主动"自适应缓冲减振。针对国家急需的大马力工程机械典型作业工况，探索温度、振频、振幅多变状态下，组合式仿生缓冲结构物理-机械参数的"嵌套"耦联机理，推绎"被-主动"缓冲结构参数耦联数理方程，建立组合结构仿生缓冲系统耦联模型；对该模型采取分层降维、分步解耦策略，探索该结构的最佳匹配参数组；构建"被-主动"自适应控制算法，进行组合式仿生缓冲结构的Simulink建模与仿真分析，检验其减振性能；改进控制算法，使其结构性能参数最优且达到振动及噪声控制指标要求。研制仿生材料配方，试制样品并开展实验研究，修正模型参数。本项目研究成果可为拥有自主知识产权、高品质工程机械仿生缓冲装置的研发提供理论依据和方法。

中文关键词： 工程机械；阻尼结构；缓冲特性；建模；解耦

英文摘要： Heavy duty construction machinery is indispensable mechanical equipment for national economic construction. To solve the violent vibration and impact problem of the machinery, a combined type damping device with bionic and adaptive characteristics is proposed to carry out the passive and active vibration reduction and cushioning adaptive control based on the buffer mechanism of natural evolution. According to the typical working conditions of high horse-powered construction machinery which is urgently needed in our country, the nested coupling mechanism of physical and mechanical parameters is explored, the coupling mathematical equations are deduced and a coupling system model is established for the combined type damping structure with bionic and adaptive characteristics under the conditions of varying temperature, frequency and amplitude. The model is analyzed by layered dimension-lowering and fractional step decoupling approaches, and the matching optimal parameter group is studied also. An adaptive control algorithm is configured for passive and active control, the Simulink modeling and simulation analysis are performed for the combined type damping structure, and the vibration reduction performance is investigated and tested. The control algorithm is improved to make sure the performance parameters can reac

英文关键词： construction machinery；damping structure；buffer characteristic；modeling；decoupling