Autonomous Operation of Planar Linear Motors

平面直线电机的自主运行

• 批准号: 9900165
• 负责人: Ralph Hollis
• 金额: $ 30.64万
• 依托单位: Carnegie-Mellon University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-05-01 至 2003-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9900165&HistoricalAwards=false
• 关键词: Autonomous; Operation; Planar; Linear; Motors

This project will investigate the set of problems which must be solved to produce a new class of precision motion machines capable of rapidly moving over a planar surface and subsequently positioning to sub-micrometer precision without the need to provide air, power, and signals over a tether as is the case with today's technology. Planar linear motors currently used in industry operate with a tether in an open-loop stepping manner. This mode of operation makes them restricted in range of motion, susceptible to loss of steps, unable to reject external disturbances (such as tugs on the tether), unable to provide controlled forces, and unable to provide high stiffness. A previous NSF-funded project produced technology advances allowing integrated robust position sensing and control for this class of motors, providing improved motion characteristics including better disturbance rejection, better resolution, and reduced energy consumption. Building on these results, the present project will explore optimal energy utilization, innovative frictionless bearing design, and innovative integrated computing and communications technology to eliminate the need for a tether. Elimination of the tether will allow machines based on planar motors to be completely free-roaming over their corresponding stator surfaces. This will enable significant improvement in the operation of a wide range of systems, including manufacturing systems, that are based on these motors.

该项目将调查必须解决的一组问题，以生成一类新的精密运动机器，能够在平面表面上快速移动，然后将其定位到亚微米的精度，而无需像当今技术一样提供空气，功率和信号。 当前在行业中使用的平面线性电动机以开环的踏板方式运营。 这种操作模式使它们受到运动范围的限制，容易丢失步骤，无法拒绝外部干扰（例如系绳上的拖船），无法提供受控力量，并且无法提供高刚度。 先前由NSF资助的项目产生了技术的进步，允许对此类电动机进行集成稳健的位置感测和控制，从而改善了运动特性，包括更好的干扰拒绝，更好的分辨率和减少的能耗。 在这些结果的基础上，本项目将探索最佳的能源利用，无创新的摩擦轴承设计以及创新的集成计算和通信技术，以消除束缚的需求。 束缚的消除将允许基于平面电动机的机器在其相应的定子表面上完全自由开放。 这将使基于这些电动机在内的广泛系统（包括制造系统）的运行范围可显着改善。