Analysis and Control of Time-Dependent Translating Media for High Speed, High Precision Mechanical Systems

PI姓名：朱卫东研究机构：马里兰州，巴尔的摩县的大学建议编号：0116425建议标题：高速，高精度机械系统的时变翻译媒体的分析和控制项目摘要：翻译媒体模型，如磁带，传送带，传输链和传输电缆等高速细长构件。 虽然关于具有恒定长度和传输速度的平移介质的动态特性已知很多，但是对于具有可变长度和/或传输速度的平移介质的动态行为还没有很好地理解。 该提案提出了新的分析和实验技术，以分析和控制具有可变长度和/或传输速度的平移介质的振动。 与经典的参数激励方法不同，本文将采用统一的方法来分析这两个系统的稳定性。 将开发分析和计算方法来预测其自由和受迫响应。 主动和参数控制方法将被探索，以消散他们的振动能量。 结合实验研究，将开发一种新型的高层，高速电梯的比例模型。 将在模型上进行实验以验证理论预测。 在与奥蒂斯电梯公司的合作中，为翻译具有可变长度的媒体而开发的方法将被应用于高层电梯的设计。 变速平移介质的发展将应用于线锯制造工艺和磁带驱动系统。 这项研究的成功将增强我们对动态系统一般领域的基本理解，并实现在各种具有翻译媒体的技术系统中实现更高操作速度的直接目标。

PI's name: Weidong ZhuInstitution: University of Maryland, Baltimore CountyProposal number: 0116425Proposal title: Analysis and Control of Time-Dependent Translating Media for High Speed, High Precision Mechanical SystemsProject abstract:Translating media model such high-speed slender members as magnetic tapes, conveyer belts, transmission chains, and transport cables. While much is known about the dynamics of translating media with constant length and transport speed, the dynamic behavior of translating media with variable length and/or transport speed is not well understood. This proposal addresses new analytical and experimental techniques to analyze and control the vibration of translating media with variable length and/or transport speed. A unified method that differs from classical parametric excitation approach will be employed to analyze the stability of both systems. Analytical and computational methods will be developed to predict their free and forced responses. Active and parametric control methodologies will be explored to dissipate their energies of vibration. In conjunction with the experimental investigation, a novel scaled model will be developed for a high-rise, high-speed elevator. Experiments will be conducted on the model to validate the theoretical predictions. In collaboration with Otis Elevator Company, the methodologies developed for translating media with variable length will be applied to the design of high-rise elevators. The developments for translating media with variable speed will be applied to wiresaw manufacturing processes and magnetic tape drive systems. The success of this research will enhance our fundamental understanding in the general field of dynamic systems, as well as meet the immediate goal of enabling higher operating speeds in a variety of technological systems featuring translating media.