POWRE: Methodology for Design of Compliant Mechanisms with Integrated Smart Materials

POWRE：采用集成智能材料设计顺应机制的方法

• 批准号: 9870527
• 负责人: Mary Frecker
• 金额: $ 8万
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-07-01 至 1999-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9870527&HistoricalAwards=false
• 关键词: POWRE; Methodology; Design; Compliant; Mechanisms

Development of smart materials and structures is a rapidly emerging field in engineering. A structure is considered "smart" when, together with a controller, it can sense changes in its environment and adapt to those changes. However, a major barrier in the design of smart structures is that current actuation devices such as strain-induced actuators are limited in their output displacement capability. As a result, they are often equipped with compliant stroke amplifiers. To eliminate the reliance on intuitive and ad-hoc design methods for these actuators, a new systematic design method is needed. The goal of this research is to develop such a method. This new method will employ a topology optimization approach, accounting for issues particular to smart structures such as maximum amplification, maximum mechanical efficiency, impedance matching, and least weight. The resulting optimal compliant mechanism designs will then be integrated with smart materials to form an actuator. It is expected that these optimally designed actuators will offer improved stroke performance over current smart actuator designs. The funding provided by the POWRE program will allow the PI to conduct this fundamental research and establish her own research program and laboratory in the area of smart structures design.

智能材料和结构的开发是工程领域的快速新兴领域。 当结构与控制器一起感觉到其环境变化并适应这些变化时，结构被认为是“智能的”。 但是，智能结构设计的主要障碍是当前的致动装置（例如应变引起的致动器）的输出位移能力受到限制。 结果，它们通常配备了合规的中风放大器。 为了消除这些执行器对直观和临时设计方法的依赖，需要采用一种新的系统设计方法。 这项研究的目的是开发这种方法。 这种新方法将采用一种拓扑优化方法，该方法考虑到智能结构的特定问题，例如最大化放大，最大机械效率，阻抗匹配和重量最小。 然后，最佳的最佳机制设计将与智能材料集成以形成执行器。 预计这些最佳设计的执行器将比当前的智能执行器设计提供改进的中风性能。 POWRE计划提供的资金将允许PI进行这项基本研究，并在智能结构设计领域建立自己的研究计划和实验室。