Silkworm-inspired robot tracks odors even after losing one sensor

Researchers from the National Institute of Informatics, Science Tokyo, and Tohoku University have developed a bio-inspired robot capable of locating odor sources with high accuracy even after losing one of its two sensors. This innovation draws inspiration from the silkworm moth, which can still track pheromones effectively despite losing one antenna. Unlike conventional odor-tracking robots that rely on balanced input from both sensors and often fail when one sensor is impaired, the new robot adapts by continuously interpreting signals from the remaining sensor and adjusting its movements dynamically. The team studied the behavior of adult male silkworm moths, discovering that these insects combine odor detection with movement direction to maintain precise navigation under sensory loss. Implementing this biological strategy, the robot demonstrated consistent performance in both controlled indoor and complex outdoor environments, successfully locating odor sources despite sensor impairment and environmental disturbances. This work exemplifies a broader trend in robotics toward designing machines that are more adaptable and resilient by mimicking biological systems. Potential applications include disaster response, explosive