A Novel Tandem Differential Edge Sensor Layout for Segmented Mirror Telescopes

doi:10.3390/s23167252

CIOMP OpenIR

	A Novel Tandem Differential Edge Sensor Layout for Segmented Mirror Telescopes
	Y. Huo; F. Yang; F. Wang; P. Guo; J. Zhu and Y. Liu
	2023
发表期刊	Sensors
ISSN	14248220
卷号	23 期号:16
摘要	The performance of an active control system, crucial for the co-phase maintenance of segmented mirrors, is closely related to the spatial layout of sensors and actuators. This article compares two types of edge sensor layouts, vertical and horizontal, and proposes a novel tandem differential sensor layout that saves layout space and reduces the number of positioning references. The control performance of this scheme is analyzed in terms of error propagation, mode representation, and the scalable construction of the control matrix. Finally, we constructed a tandem differential-based sensor detection system to examine the performance of edge sensors and the effect of laboratory environmental variables on sensor measurements. Simulations and experiments demonstrate that this scheme has the same ability to fully characterize actuator modification modes as the Keck edge sensor layout. Although the total error multiplier is slightly larger than the latter, it has fewer scalable control matrix types and stronger spatial and segmental shape adaptation capabilities. Actual measurements show that the sensor’s own noise in a tandem differential layout is less than 20 nm, which meets the requirements for future segmented co-phase maintenance. This layout type can potentially be applied to future small and medium-sized segmented splices. © 2023 by the authors.
DOI	10.3390/s23167252
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收录类别	sci ; ei
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/67544
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Y. Huo,F. Yang,F. Wang,et al. A Novel Tandem Differential Edge Sensor Layout for Segmented Mirror Telescopes[J]. Sensors,2023,23(16).
APA	Y. Huo,F. Yang,F. Wang,P. Guo,&J. Zhu and Y. Liu.(2023).A Novel Tandem Differential Edge Sensor Layout for Segmented Mirror Telescopes.Sensors,23(16).
MLA	Y. Huo,et al."A Novel Tandem Differential Edge Sensor Layout for Segmented Mirror Telescopes".Sensors 23.16(2023).

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