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Open AccessArticle

Optimal Design Based on Closed-Loop Fusion for Velocity Bandwidth Expansion of Optical Target Tracking System

by 1,2,*, 1,2,3, 1,2,3 and 1,2
1
Key Laboratory of Optical Engineering, Chinese Academy of Sciences, Chengdu 610209, China
2
Institute of Optics and Electronics, Chinese Academy of Science, Chengdu 610209, China
3
Chinese Academy of Science, Beijing 100039, China
*
Author to whom correspondence should be addressed.
Sensors 2019, 19(1), 133; https://doi.org/10.3390/s19010133
Received: 9 November 2018 / Revised: 18 December 2018 / Accepted: 25 December 2018 / Published: 2 January 2019
(This article belongs to the Section Physical Sensors)
Micro-electro-mechanical system (MEMS) gyro is one of the extensively used inertia sensors in the field of optical target tracking (OTT). However, velocity closed-loop bandwidth of the OTT system is limited due to the resonance and measurement range issues of MEMS gyro. In this paper, the generalized sensor fusion framework, named the closed-loop fusion (CLF), is analyzed, and the optimal design principle of filter is proposed in detail in order to improve measurement of the bandwidth of MEMS gyro by integrating information of MEMS accelerometers. The fusion error optimization problem, which is the core issue of fusion design, can be solved better through the feedback compensation law of CLF framework and fusion filter optimal design. Differently from conventional methods, the fusion filter of CLF can be simply and accurately designed, and the determination of superposition of fusion information can also be effectively avoided. To show the validity of the proposed method, both sensor fusion simulations and closed-loop experiments of optical target tracking system have yielded excellent results. View Full-Text
Keywords: MEMS gyro; optical target tracking; closed-loop fusion; optimal design MEMS gyro; optical target tracking; closed-loop fusion; optimal design
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MDPI and ACS Style

Mao, Y.; Ren, W.; Luo, Y.; Li, Z. Optimal Design Based on Closed-Loop Fusion for Velocity Bandwidth Expansion of Optical Target Tracking System. Sensors 2019, 19, 133. https://doi.org/10.3390/s19010133

AMA Style

Mao Y, Ren W, Luo Y, Li Z. Optimal Design Based on Closed-Loop Fusion for Velocity Bandwidth Expansion of Optical Target Tracking System. Sensors. 2019; 19(1):133. https://doi.org/10.3390/s19010133

Chicago/Turabian Style

Mao, Yao; Ren, Wei; Luo, Yong; Li, Zhijun. 2019. "Optimal Design Based on Closed-Loop Fusion for Velocity Bandwidth Expansion of Optical Target Tracking System" Sensors 19, no. 1: 133. https://doi.org/10.3390/s19010133

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