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首页> 外文期刊>Mechatronics, IEEE/ASME Transactions on >Inertially Stabilized Platform for Airborne Remote Sensing Using Magnetic Bearings
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Inertially Stabilized Platform for Airborne Remote Sensing Using Magnetic Bearings

机译：使用磁轴承的机载遥感惯性稳定平台

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摘要

Multiaxis gimbal configurations are commonly used in the line of sight stabilization systems for airborne remote sensing. Although these configurations are cost-effective, system performances deteriorate in the case of large payload, due to nonlinear friction and bandwidth limit of the servo loops. In this paper, a novel maglev dual-stage inertially stabilized platform is described, which encompasses a two-axis gimbal assembly as the coarse stage and a 5-DOF (degree of freedom) magnetic bearing as the fine stage. The coarse stage is mounted on the aircraft consisting of a lateral gimbal and an elevation gimbal to isolate the large angular motion of the vehicle and provide coarse pointing. The payload instrument is suspended in the elevation gimbal utilizing an electromagnetic bearing with vernier gimbaling capability to compensate the residual angular motion of the gimbal. An actual prototype of the proposed platform was designed and fabricated to illustrate the framework. The performance of the magnetic suspension system is investigated through experiments. Detailed models are established for the magnetic suspension system and the gimbal stabilizing system to develop the control strategy of the dual-stage system. Finally, the effectiveness of the design is demonstrated through simulation studies, where a 3.5 times stabilization precision improvement is prefigured compared to a reference conventional gimbal system.
机译：多轴云台配置通常用于机载遥感的视线稳定系统中。尽管这些配置具有成本效益，但是由于非线性摩擦和伺服环路的带宽限制，在有效负载较大的情况下，系统性能会下降。在本文中，描述了一种新型的磁悬浮双级惯性稳定平台，该平台包括一个两轴万向节组件作为粗载台，以及一个5自由度（自由度）磁轴承作为细载台。粗载物台安装在由侧向万向架和仰角万向架组成的飞机上，以隔离车辆的大角度运动并提供粗略指向。利用具有游标万向架能力的电磁轴承将有效载荷仪器悬挂在高架万向架中，以补偿万向架的残余角运动。设计并制造了所建议平台的实际原型，以说明该框架。通过实验研究了磁悬浮系统的性能。建立了磁悬浮系统和云台稳定系统的详细模型，以开发双级系统的控制策略。最后，通过仿真研究证明了设计的有效性，与参考传统的常平架系统相比，该模型的稳定度提高了3.5倍。

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