月基磁悬浮旋转抛射返回系统新技术

月球资源开发与利用是深空探测由“探”到“用”发展的内生源动力,是全球深空探测的热点研究领域。月球具有丰富的3He、钛、稀土金属等珍稀资源,受限于传统月地返回方式技术复杂度高、规模庞大、重复性差、经济性差等因素,各国对月球资源开发与运返利用均停留在“探”的阶段,对如何实现高效的“用”,尚未形成经济可行的技术方案。基于现有的磁悬浮和旋转飞轮技术,提出以磁悬浮旋转抛射为核心的月地返回系统新技术。该技术充分利用月表低温、弱重力等环境因素,实现月球资源可被重复、低成本、高频次地运返地球。

无轴承同步电机通用旋转磁悬浮力模型研究

解析了无轴承电机的通用电感模型,导出了通用同步速旋转磁悬浮力模型。该通用模型可同时适用于凸极型转子和圆柱型转子无轴承同步电机,仿真验证了模型的正确性和有效性。

五维控制磁悬浮轴承装置的试验研究

本文在五维控制磁悬浮轴承装置研制的基础上，对其性能参数等进行了试验研究。

大承载低扰动六自由度磁卸载机构的设计

分析了水浮、悬吊、气浮等常用重力卸载方式的局限性,设计开发了一种磁卸载机构。新型机构采用径向并联双结构方式,克服了大承载机构悬浮时需外部冷却设备的难题。双边、无缝拼接永磁体的采用,实现了空间工作磁场强度的一致性,消减了干扰力的引入;同时选用不导磁、不导电的非金属线圈骨架,无附加磁滞阻力和阻尼力矩,实现了零重力卸载的要求。通过应用试验表明该卸载机构满足空间磁悬浮旋转平台地面研究和验证的需求。

铁电高分子共聚物薄膜样品真空制膜仪的设计与制作

设计与制作了铁电高分子共聚物薄膜样品真空制膜仪，该制膜仪操作简单，制膜方便，制备出的薄膜样品厚度均匀，膜厚可控制在30－40μm，可替代昂贵的机械静热压式或旋转悬浮式制膜仪。

Theory of Electrorotation of Clustered Colloidal Particles

When a colloidal suspension is exposed to a strong rotating electric field, an aggregation of the suspended particles is induced to appear. In such clusters, the separation between the suspended particles is so close that one could not neglect the multiple image effect on the electrorotation (ER) spectrum. Since so far the exact multiple image method exists in two dimensions only, rather than in three dimensions, we investigate the ER spectrum of the clustered colloidal particles in two dimensions, in which many cylindrical particles are randomly distributed in a sheet cluster. We report the dependence of the ER spectrum on the materialparameters. It is shown that the multiple image method predicts two characteristic frequencies, at which the rotation speed reaches maximum. To this end, the multiple image method is numerically demonstrated to be in good agreement with the known Maxwell-Garnett approximation.

A Study on the Levitation Control of the Multi-degrees-of-Freedom Rotational Machine Supported by Magnetic Bearings Using Flux Feedback

This paper deals with an open-loop characteristic of a magnetically levitated system including flux feedback. In order to design a controller to obtain a good disturbance rejection and to be insensitive to parameter variations, it might be useful to employ a flux feedback loop. The air gap flux which can be sensed by a proper sensor has linear relationship with respect to the change of the current and the air gap. This linear property decreases the inherent nonlinearity of the magnetic suspension system that is caused by the coupling between the electrical actuator and the mechanical plant. Simulation results achieved from a multi-degree-of-freedom numerical model show that the flux feedback loop makes an improvement of the performance of the magnetic suspension system against the load variations.

月球资源低成本规模化批量运返技术方案设想

月球资源开发与利用是新时代世界航天大国月球探测的核心内容和焦点。本文介绍了月球资源开发工程的技术难点,提出了一种月球资源开发低成本规模化批量运返技术方案,其核心为全新设计的月基磁悬浮旋转抛射返回系统。该方案具有原创性强、易实现、高效益等技术优势和特点,能够大幅提升月球资源开发运返效率,降低运返成本,对实现月球资源规模化批量运返,促进其商业化开发具有重要的现实意义。同时本文还提出了月球资源开发应用系统大科学装置的构想,以服务于将来的月球探测科学研究以及月球资源开发与利用。