Method for obstacle avoidance in degraded environments of robots based on intrinsic plasticity of SNN

US11911902B2 · kind B2 · utility

Assignee

• Dalian University of Technology · CN

Inventors

• Xin Yang · 东风镇, CN
• Jianchuan Ding · 东风镇, CN
• Bo Dong · Longbeilingcun, CN
• Felix Heide · Princeton, US
• Baocai YIN · 东风镇, CN

Key dates

• Filing date: Dec 20, 2021
• Grant date: Feb 27, 2024
• Expiry date: Sep 14, 2042

Classification

• Technology area (CPC G): Physics
• CPC primary: G06N3/092
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A method for obstacle avoidance in degraded environments of robots based on intrinsic plasticity of an SNN is disclosed. A decision network in a synaptic autonomous learning module takes lidar data, distance from a target point and velocity at a previous moment as state input, and outputs the velocity of left and right wheels of the robot through the autonomous adjustment of the dynamic energy-time threshold, so as to carry out autonomous perception and decision making. The method solves the difficulty of the lack of intrinsic plasticity in the SNN, which leads to the difficulty of adapting to degraded environments due to the homeostasis imbalance of the model, is successfully deployed in mobile robots to maintain a stable trigger rate for autonomous navigation and obstacle avoidance in degraded, disturbed and noisy environments, and has validity and applicability on different degraded scenes.