Alexander Pechhacker, Ernst Csencsics, Georg Schitter
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引用次数: 0
Abstract
This paper presents an air gap design approach to improve the linearity of rotational Hybrid Reluctance Actuators (HRAs) used in fast steering mirrors. The approach involves modeling a one-degree-of-freedom HRA with a magnetic equivalent circuit to identify and analyze sources of non-linearities. On the basis of the verified model, solutions for an improved linear system behavior are analytically searched. Two linearized HRA designs are proposed, one with linear cross-section dependency and the other with hyperbolic air gap length dependency. Finite element method simulations are employed to evaluate the performance with respect to the linearity and the motor constant of these designs, showing factor 50 improved system linearity.
本文介绍了一种气隙设计方法，用于提高快速转向镜中使用的旋转混合磁阻致动器（HRA）的线性度。该方法包括用磁性等效电路对单自由度 HRA 进行建模，以识别和分析非线性的来源。在验证模型的基础上，通过分析寻找改进线性系统行为的解决方案。提出了两种线性化 HRA 设计，一种与横截面线性相关，另一种与双曲气隙长度相关。采用有限元法模拟评估了这些设计在线性度和电机常数方面的性能，结果显示系统线性度提高了 50 倍。
期刊介绍：
Precision Engineering - Journal of the International Societies for Precision Engineering and Nanotechnology is devoted to the multidisciplinary study and practice of high accuracy engineering, metrology, and manufacturing. The journal takes an integrated approach to all subjects related to research, design, manufacture, performance validation, and application of high precision machines, instruments, and components, including fundamental and applied research and development in manufacturing processes, fabrication technology, and advanced measurement science. The scope includes precision-engineered systems and supporting metrology over the full range of length scales, from atom-based nanotechnology and advanced lithographic technology to large-scale systems, including optical and radio telescopes and macrometrology.
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