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AIProVE – Adjustable Impedance Elements for Product Validation in Compliant Environments

AIProVE – 可调节阻抗元件，用于合规环境中的产品验证

基本信息

批准号：
399922375
负责人：
Professor Dr.-Ing. Dieter Krause
金额：
--
依托单位：
Institut für Produktentwicklung (IPEK)
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2018
资助国家：
德国
起止时间：
2017-12-31 至 2021-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/399922375?language=en
关键词：
AIProVE Adjustable Impedance Elements Product

项目摘要

Validation of mechanical systems under dynamic loads requires the consideration of the system’s operation environment, since the boundary conditions have a major impact on the system’s behavior. For repeatable results, tests are conducted on test rigs to define, control and measure parameters. Systematic deviations occur inevitably, if the impedance of the real system is variable, but the test rig’s impedance is not.In this project, Adjustable Impedance Elements (AIEs) are researched as machine elements for test benches and guidelines on the examples of power tool and aircraft lightweight structures. In power tool testing the dynamic behaviour of the user’s hand is subjected to heterogeneity of users, different postures or changes in muscle tension during the application, which leads to different results. In a second case, the dynamic behaviour of aircraft cabin components, like galleys or lavatories are highly affected by different joint impedances, due to variable installation positions in the cabin. In both cases more realistic test results can be achieved by adjusting the stiffness and damping of the test environment with an AIE during test campaigns and systematic studies are possible to improve product design. The AIEs are machine elements that allow an independent adjustment of their mechanical stiffness and damping properties. So far, a variety of adjustable stiffness elements (ASEs) and adjustable damping elements (ADEs) have been investigated. But only little research addressed the combined application of adjustable stiffness and adjustable damping in AIEs. Different dimensions, operation ranges and measurement techniques complicate comparisons based on literature research.The project starts with an experimental investigation of different working principles for ASEs and ADEs as well as their static and dynamic characterization. The ASEs and ADEs are combined to AIE prototypes and then analyzed regarding their characteristic stiffness and damping behavior at high and low frequency bands. Based on the research a modular AIE design catalogue is developed, that covers different requirements, e.g. different frequency ranges and loads for the dimensioning as well as the selection process of suitable working principles. The catalogue supports scientists researching AIEs and scientists requiring specific AIEs for testing application.To demonstrate the potential of AIEs, two AIEs are chosen and investigated for tests of power tools and cabin interior. The two test set ups cover different ranges of requirements from low frequency band with high excitation forces and a high frequency band with low excitation forces. Thus, the two scenarios represent an application study on the modular AIE design catalogue. Guidelines for more realistic testing of power tools, including a wide range of user impedance variation, and aircraft lightweight structures, including different joint impedances, are derived to enable new knowledge for product development.

动态载荷下的机械系统的验证需要考虑系统的操作环境，因为边界条件对系统的行为有重大影响。为了获得可重复的结果，在测试台上进行测试，以定义、控制和测量参数。如果真实的系统的阻抗是可变的，而试验台的阻抗不是可变的，则不可避免地会出现系统偏差。在本项目中，可调阻抗元件（AIE）作为测试台架的机器元件进行研究，并以电动工具和飞机轻型结构为例进行指导。在电动工具测试中，用户的手的动态行为受到用户的异质性、应用期间的不同姿势或肌肉张力的变化的影响，这导致不同的结果。在第二种情况下，由于机舱中的可变安装位置，飞机机舱部件（如厨房或盥洗室）的动态行为受到不同接头阻抗的高度影响。在这两种情况下，通过在测试活动期间使用AIE调整测试环境的刚度和阻尼可以获得更真实的测试结果，并且可以进行系统的研究以改进产品设计。AIE是允许独立调整其机械刚度和阻尼特性的机器元件。到目前为止，已经研究了各种可调刚度元件（ASE）和可调阻尼元件（ADE）。但是，关于可调刚度和可调阻尼在AIEs中的联合应用的研究很少。不同的尺寸、操作范围和测量技术使得基于文献研究的比较变得复杂。该项目首先对ASE和ADE的不同工作原理以及它们的静态和动态特性进行了实验研究。将ASE和ADE组合成AIE原型，然后分析它们在高、低频带的特性刚度和阻尼行为。在此研究的基础上，开发了一个模块化的AIE设计目录，该目录涵盖了不同的要求，例如不同的频率范围和负载的尺寸以及合适的工作原理的选择过程。该目录支持研究AIEs的科学家和需要特定AIEs进行测试应用的科学家。为了展示AIEs的潜力，选择了两个AIEs并对其进行了研究，用于电动工具和驾驶室内部的测试。两种测试装置涵盖了不同的要求范围，从低频带高激振力到高频带低激振力。因此，这两个方案代表了模块化AIE设计目录的应用研究。指南更现实的测试的电动工具，包括广泛的用户阻抗变化，和飞机的轻型结构，包括不同的接头阻抗，推导出新的知识，产品开发。