4.7 Article

An experimental and numerical study on a multi-robot source localization method independent of airflow information in dynamic indoor environments

期刊

SUSTAINABLE CITIES AND SOCIETY
卷 53, 期 -, 页码 -

出版社

ELSEVIER
DOI: 10.1016/j.scs.2019.101897

关键词

Dynamic airflow; Indoor environment; Source localization; Multi-robot olfaction; Experimental and numerical validation

资金

  1. National Natural Science Foundation of China [51708286]
  2. National Program on Key Basic Research Project (973 Program) [2015CB058003]
  3. China National Key RD Program [2018YFC0705201]
  4. Natural Science Foundation of Jiangsu Province [BK20171015]

向作者/读者索取更多资源

To locate contaminant sources in dynamic indoor environments, this study presents an improved particle swarm optimization (IPSO) method independent of airflow information and validates the method by combining robot experiments with numerical simulations. The experimental study was first conducted by using three mobile robots to locate an ethanol source in a typical dynamic indoor environment with a fan swinging periodically from left to right. A total of 12 out of 15 experiments were successful, with a success rate of 80%, indicating that the method has a high success rate and strong robustness. Next, the experimental environment was further simulated by CFD, and numerical experiments were conducted. The results show that the success rate and the average number of steps from numerical experiments were consistent with those from robot experiments, indicating the feasibility of using numerical simulations. Finally, the IPSO method was numerically validated and compared with a standard PSO (SPSO) method and a modified PSO method with wind utilization II (WUII) in mixing ventilation (MV) and natural ventilation (NV) cases. With a similar average number of steps, the IPSO method achieved a higher success rate than the comparison methods, indicating the superiorly of the IPSO method.

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