Journal
MICROMACHINES
Volume 13, Issue 11, Pages -Publisher
MDPI
DOI: 10.3390/mi13112028
Keywords
micro; nano robot; biomedical applications; magnetic field
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This paper proposes a three-dimensional electromagnetic actuation system and a closed-loop control algorithm to enhance the trajectory tracking ability of micro/nanorobots. Different simulation experiments were carried out to verify the performance of the algorithm using Simulink. The results showed that the micro/nanorobot can follow the desired trajectory within a maximum error of 13 μm.
Micro/nanorobots have several potential biomedical applications, such as drug delivery, minimal invasiveness, and moving within narrow and complex areas. To achieve these desirable applications, precise path tracking and controlling magnetic micro/nanorobots within blood vessels is a crucial but challenging point. In this paper, a three-dimensional electromagnetic actuation system composed of three pairs of Helmholtz coils and three pairs of Maxwell coils is proposed. A closed-loop control algorithm is proposed to enhance trajectory tracking of a micro/nanorobot. Different simulation experiments were carried out using Simulink to verify the performance of the proposed algorithm. Different trajectories were tested in tracking two-dimensional and three-dimensional reference trajectories. The results showed that by using the developed algorithm and electromagnetic actuation system, a micro/nanorobot can follow the desired trajectory within a maximum error of 13 mu m.
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