Kinemataic and Dynamic Accuracy Performance Synthesis for Planar and Spatial Mechanisms

平面和空间机构的运动学和动态精度性能综合

• 批准号: 9012456
• 负责人: Arthur Erdman
• 金额: $ 18.5万
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-08-01 至 1994-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9012456&HistoricalAwards=false
• 关键词: Kinemataic; Dynamic; Accuracy; Performance; Synthesis

The research goal is to advance the state of the art in the design of planar and spatial mechanisms, with particular focus on kinematic and dynamic accuracy performance. Four topics will be investigated. In the first topic, kinematic synthesis for closed chain mechanisms, the relationship between the sensitivity to variations of link lengths and the location of the moving pivots of four link, six link and other complex mechanisms will be investigated for the objective of three and four position synthesis. The second topic, kinematic synthesis for three dimensional open chain mechanisms, looks at design guidelines for optimizing mechanism endpoint accuracy performance. In the third topic, dynamic synthesis for open chain multi axis mechanical systems, a new way of modeling three dimensional dynamic error as a function of frequency domain transfer function gain and delay time variations between axes is developed. The fourth and last research topic develops computer simulation tools for identifying spatial accuracy of open chain mechanisms. The overall research results are expected to be useful for practicing engineers in optimizing designs of planar and spatial mechanisms early in the design process. Traditionally, design for performance has been subordinated to the design for strength and design for manufacturing functions. This research attempts to compensate for that reduced emphasis.

研究的目标是推进最先进的 平面和空间机构的设计，特别是 专注于运动和动态精度性能。 四 主题将被调查。 在第一个主题中， 闭链机构综合，关系式 在对连杆长度变化的敏感性和 四连杆、六连杆的运动支点位置 和其他复杂的机制将被调查的 三位和四位合成的目标。 第二 三维开链运动综合 机制，着眼于优化的设计准则 机构终点精度性能。 第三 开链多轴动力学综合 机械系统，一种新的三维建模方法 作为频域传递函数的动态误差 轴之间的函数增益和延迟时间变化是 开发 第四个也是最后一个研究课题是 用于识别空间精度的计算机模拟工具 开链机制。 总体研究结果是 预计将是有用的实践工程师在 平面和空间机构的优化设计 in the design设计process处理. 传统上， 性能服从于设计， 制造功能的强度和设计。 这 研究试图弥补这种减少的重视。