Touchless attitude correction for satellite with constant magnetic moment

Ao, Hou-jun; Lee, Yang; Zhu, Yanbo; Zhang, Yuanwen; Huang, Huan

doi:10.1016/j.asr.2017.05.040

Cited by 8 publications

(1 citation statement)

References 17 publications

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“…Electromagnetic docking has also been studied for the applications of formation flight applications [11,12] and contactfree docking [13][14][15]. In addition, the key feature of electromagnetic docking is the use of non-contact electromagnetic force and torque, which are also extended to some prospective applications such as a contactless technique for active debris removal [16], the rescue of a satellite with attitude fault [17], and attitude control of separated payload in fractionated spacecraft architecture [18].…”

Section: Introductionmentioning

confidence: 99%

Micro- and Nanosatellite Sensorless Electromagnetic Docking Control Based on the High-Frequency Injection Method

Ruan

Wang

et al. 2023

Aerospace

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This paper proposes a sensorless electromagnetic docking method suitable for micro- and nanosatellites. Based on the circuit model of the electromagnetic docking device, an algorithm for calculating the distance between two satellites on the basis of the high-frequency injection (HFI) method has been developed. In the specific implementation, first, a high-frequency (HF) voltage is injected into one of the two electromagnets; second, the HF currents induced by both electromagnets are measured and their respective root-mean-squares (RMSs) are calculated; third, two RMSs are substituted into a specific formula to obtain a variable carrying distance information; finally, the variable is utilized to calculate the distance estimation using the look-up table interpolation method. This paper presents a closed-loop electromagnetic docking controller which includes an outer distance loop and an inner speed loop and adopts the distance estimation as the feedback. The proposed sensorless electromagnetic docking method is verified by the distance estimation tracking response test and the ground-based docking test. The results indicate that low-impact docking can be achieved under the initial condition that the two satellites have a certain degree of misalignment. The proposed method can be adopted as a primary or as a redundant electromagnetic docking solution for resource-critical micro- and nanosatellites.

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