Synthesis of compliant mechanisms in force measurement and weighing technology for precision applications

精密应用力测量和称重技术中柔顺机构的合成

• 批准号: 461797997
• 负责人: Professor Dr.-Ing. Thomas Fröhlich
• 金额: --
• 依托单位: Institut für Prozessmess- und Sensortechnik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/461797997?language=en
• 关键词: Synthesis; compliant; mechanisms; force; measurement

The goal of the project is the development and experimental validation of model-based synthesis methods and synthesis guidelines for compliant mechanisms in force measurement and weighing technology. For the first time, an analytical model based on fundamental research into physical effects, such as elastic after-effects and temperature dependencies, will be build up. Based on the analysis of the state of the art, it becomes clear that although synthesis approaches for compliant mechanisms exist, according to the current state of knowledge, this does not apply to strain gauge based deformation bodies in force measurement and weighing technology. Concrete systems in this field have specific requirements for the design of the compliant mechanisms, so there is a particular need to develop novel synthesis methods. The proposed project is intended to make a significant contribution to closing this gap in research. The specific mechanisms are to be examined metrologically in order to examine whether the uncertainties of the force measurements can be reduced by the desired factor 10 with the help of the developed models and approaches. Since the quality of the mechanical manufacturing has a considerable influence on the movement properties of individual flexure hinges and entire compliant mechanisms, measurements should be carried out to quantify the effects of the manufacturing tolerances on the mechanisms. This will be provided in the form of a robustness and sensitivity analysis. After the developed analytical model has been metrologically verified, synthesis methods are developed. Thus, novel solutions for the design of compliant mechanisms as force sensors are to be found, for example, to drastically reduce the complexity of the geometries used. Finally, on the basis of the developed synthesis methods or tools are to be designed which enable and support the interpretation of the compliant mechanisms as force sensors in future applications.

该项目的目标是开发和实验验证基于模型的综合方法以及力测量和称重技术中柔性机构的综合指南。将首次建立一个基于物理效应基础研究的分析模型，如弹性后效和温度依赖性。基于对现有技术的分析，很明显，尽管存在柔性机构的综合方法，但根据目前的知识水平，这并不适用于力测量和称重技术中基于应变片的变形体。该领域的混凝土体系对柔性机构的设计有特定的要求，因此特别需要开发新的合成方法。拟议的项目旨在为缩小这一研究差距作出重大贡献。将对具体的机构进行计量学检查，以便检查在开发的模型和方法的帮助下，力测量的不确定性是否可以减少所需的因子10。由于机械制造质量对单个柔性铰链和整个柔性机构的运动特性有相当大的影响，因此应进行测量以量化制造公差对机构的影响。这将以稳健性和敏感性分析的形式提供。在对所建立的分析模型进行计量验证后，提出了合成方法。因此，需要找到设计柔顺机构作为力传感器的新解决方案，例如，大大降低所使用几何形状的复杂性。最后，在开发的综合方法或工具的基础上，设计使并支持在未来应用中解释作为力传感器的柔性机构。