NEAT and HyperNEAT based Design for Soft Actuator Controllers

Fuente: arXiv
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Auteurs principaux: Alcaraz-Herrera, Hugo, Tsompanas, Michail-Antisthenis, Balaz, Igor, Adamatzky, Andrew
Format: Preprint
Publié: 2025
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author Alcaraz-Herrera, Hugo
Tsompanas, Michail-Antisthenis
Balaz, Igor
Adamatzky, Andrew
author_facet Alcaraz-Herrera, Hugo
Tsompanas, Michail-Antisthenis
Balaz, Igor
Adamatzky, Andrew
contents Since soft robotics are composed of compliant materials, they perform better than conventional rigid robotics in specific fields, such as medical applications. However, the field of soft robotics is fairly new, and the design process of their morphology and their controller strategies has not yet been thoroughly studied. Consequently, here, an automated design method for the controller of soft actuators based on Neuroevolution is proposed. Specifically, the suggested techniques employ Neuroevolution of Augmenting Topologies (NEAT) and Hypercube-based NEAT (HyperNEAT) to generate the synchronization profile of the components of a simulated soft actuator by employing Compositional Pattern Producing Networks (CPPNs). As a baseline methodology, a Standard Genetic Algorithm (SGA) was used. Moreover, to test the robustness of the proposed methodologies, both high- and low-performing morphologies of soft actuators were utilized as testbeds. Moreover, the use of an affluent and a more limited set of activation functions for the Neuroevolution targets was tested throughout the experiments. The results support the hypothesis that Neuroevolution based methodologies are more appropriate for designing controllers that align with both types of morphologies. In specific, NEAT performed better for all different scenarios tested and produced more simplistic networks that are easier to implement in real life applications.
format Preprint
id arxiv_https___arxiv_org_abs_2506_04698
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle NEAT and HyperNEAT based Design for Soft Actuator Controllers
Alcaraz-Herrera, Hugo
Tsompanas, Michail-Antisthenis
Balaz, Igor
Adamatzky, Andrew
Neural and Evolutionary Computing
Since soft robotics are composed of compliant materials, they perform better than conventional rigid robotics in specific fields, such as medical applications. However, the field of soft robotics is fairly new, and the design process of their morphology and their controller strategies has not yet been thoroughly studied. Consequently, here, an automated design method for the controller of soft actuators based on Neuroevolution is proposed. Specifically, the suggested techniques employ Neuroevolution of Augmenting Topologies (NEAT) and Hypercube-based NEAT (HyperNEAT) to generate the synchronization profile of the components of a simulated soft actuator by employing Compositional Pattern Producing Networks (CPPNs). As a baseline methodology, a Standard Genetic Algorithm (SGA) was used. Moreover, to test the robustness of the proposed methodologies, both high- and low-performing morphologies of soft actuators were utilized as testbeds. Moreover, the use of an affluent and a more limited set of activation functions for the Neuroevolution targets was tested throughout the experiments. The results support the hypothesis that Neuroevolution based methodologies are more appropriate for designing controllers that align with both types of morphologies. In specific, NEAT performed better for all different scenarios tested and produced more simplistic networks that are easier to implement in real life applications.
title NEAT and HyperNEAT based Design for Soft Actuator Controllers
topic Neural and Evolutionary Computing
url https://arxiv.org/abs/2506.04698