期刊
ENGINEERING APPLICATIONS OF ARTIFICIAL INTELLIGENCE
卷 113, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.engappai.2022.104968
关键词
Evolutionary robotics; Modular robots; Energy efficiency; Optimization; CPPN; Simulation
Evolutionary robotics focuses on optimizing autonomous robots for specific tasks. This paper studies the impact of energy consumption on robot evolution by adding a battery module to the robot simulator framework. The results show that considering energy consumption improves the robots' task performance and speeds up the evolution process.
Evolutionary robotics is concerned with optimizing autonomous robots for one or more specific tasks. Remarkably, the energy needed to operate autonomously is hardly ever considered. This is quite striking because energy consumption is a crucial factor in real-world applications and ignoring this aspect can increase the reality gap. In this paper, we aim to mitigate this problem by extending our robot simulator framework with a model of a battery module and studying its effect on robot evolution. The key idea is to include energy efficiency in the definition of fitness. The robots will need to evolve to achieve high gait speed and low energy consumption. Since our system evolves the robots' morphologies as well as their controllers, we investigate the effect of the energy extension on the morphologies and on the behavior of the evolved robots. The results show that by including the energy consumption, the evolution is not only able to achieve higher task performance (robot speed), but it reaches good performance faster. Inspecting the evolved robots and their behaviors discloses that these improvements are not only caused by better morphologies, but also by better settings of the robots' controller parameters.
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