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Updated: Sep 12, 2025

Magnetic Tweezers for the Measurement of Twist and Torque
Published on: May 19, 2014
Finite-time moving target circumnavigation based on dual sliding-mode estimator using bearing-only measurements
Yingjing Shi1, Rui Li1, Ce Yu1
1School of Automation Engineering, University of Electronic Science and Technology of China, 2006 Xiyuan Avenue, Chengdu, 611731, China.
Abstract:
Utilizing incomplete measurements to localize and circumnavigate a moving target in finite time is still a challenging problem. This paper presents an innovative sliding-mode control framework to tackle this issue, which combines a single parameter estimator with a control protocol based on bearing measurements. For a stationary target, the agent will eventually move on a circle with the specified radius, adhering to a maximum time constraint for localization and circumnavigation. In the case of the moving target with unknown speed, the agent achieves the circumnavigation in a ring, and relationship between the system parameters and the speed of the target is established. Additionally, the paper outlines the circumnavigation zone and the quantitative relationship between this zone and the system parameters. The proposed solution's effectiveness is demonstrated through extensive numerical simulations and a physical experiment.
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