Postdoc: ECS Postdoctoral Associate: Design and Simulation of Algorithms and Mechanisms for Precision Assembly

9705022 Goldberg，Kenneth Y.加州大学伯克利分校CISE博士后研究员，从事实验CS：精密装配算法和机构的设计和仿真(该奖项支持CES研究员Karl Bohringer)。在大规模生产的商业产品的小型化方面取得进展，需要改进和创新精密组装。磁存储系统、掌上电脑和可穿戴计算机或电信设备等产品通常需要亚微米级的组装操作。越来越多的此类组件采用MEMS(微电子机械系统)技术批量制造，通常在一次并行制造过程中产生数千个组件。与MEMS组件的高度自动化制造相比，目前的组装技术相当有限。传统的顺序拾取装配对于这样的应用来说是非常低效或不切实际的，因为部件尺寸小且要求的精度很高。相反，提出了并行自组装的新技术。主动表面(即可以产生二维力矢量场的表面)允许在很少或没有传感器反馈的情况下对小零件进行精确定位、定向和分类。振动和射流搅拌可以产生并联装配的动力。可以利用使用微型倒角和闩锁的机械顺应性来减少部件的自由度。建立了描述精密并联装配的详细模型，采用了三种技术：机械振动、流体搅拌和主动表面。分析了每种技术的动力响应，并用建模系统进行了仿真。进行了物理实验以确认我们的模型准确地反映了测量的行为。

9705022 Goldberg, Kenneth Y. University of California - Berkeley CISE Postdoctoral Research Associates in Experimental CS: Design and Simulation of Algorithms and Mechanisms for Precision Assembly (This award supports CES associate Karl Bohringer.) Progress in miniaturization of mass-produced commercial products requires improvements and innovation in precision assembly. Products such as magnetic storage systems, palmtop and wearable computers, or telecommunications devices often require submicron-level assembly operations. Increasingly, the components for such assemblies are batch-fabricated in MEMS (micro electro mechanical system) technology, often yielding thousands of components in one parallel fabrication run. In contrast to the highly automated fabrication of MEMS components, current assembly techniques are rather limited. Conventional, sequential pick-and-place assembly is extremely inefficient or impractical for such applications, because of the small size of the components and the high accuracy required. Instead, novel techniques are proposed for parallel self-assembly. Active surfaces (i.e., surfaces that can generate two-dimensional force vector fields) permit the precise positioning, orienting, and sorting of small parts with little or no sensor feedback. Vibration and fluidic agitation can generate a motive force for parallel assembly. Mechanical compliance, using micro-chamfers and latches, can be exploited to reduce the degrees of freedom of the components. Detailed models are developed to describe precision parallel assembly using three techniques: mechanical vibration, fluidic agitation, and active surfaces. The motive force response for each of these techniques is analyzed, and simulations with a modeling system are performed. Physical experiments are performed to confirm that our models accurately reflect measured behavior.