期刊
MICROMACHINES
卷 7, 期 1, 页码 -出版社
MDPI
DOI: 10.3390/mi7010003
关键词
magnetic microrobots; path planning; mobile microrobots
类别
资金
- US National Science Foundation [IIS-1358446, IIS-1302283]
- Direct For Computer & Info Scie & Enginr
- Div Of Information & Intelligent Systems [1433967, 1358446] Funding Source: National Science Foundation
In this paper, we have developed an approach for independent autonomous navigation of multiple microrobots under the influence of magnetic fields and validated it experimentally. We first developed a heuristics based planning algorithm for generating collision-free trajectories for the microrobots that are suitable to be executed by an available magnetic field. Second, we have modeled the dynamics of the microrobots to develop a controller for determining the forces that need to be generated for the navigation of the robots along the trajectories at a suitable control frequency. Next, an optimization routine is developed to determine the input currents to the electromagnetic coils that can generate the required forces for the navigation of the robots at the controller frequency. We then validated our approach by simulating an electromagnetic system that contains an array of sixty-four magnetic microcoils designed for generating local magnetic fields suitable for simultaneous independent actuation of multiple microrobots. Finally, we prototyped an m m -scale version of the system and present experimental results showing the validity of our approach.
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