用脉冲神经网络让机械臂更省电、更快地学会抓取目标。
Fully Spiking Actor-Critic Neural Network for Robotic Manipulation
- 用仅含输入输出层的简化脉冲网络,降低计算开销。
- 在模拟环境中实现9自由度机械臂抓取任务,能耗比传统模型低47%。
- 适合边缘部署、对能效和实时性要求高的机器人系统。
本研究提出一种基于全脉冲神经网络(SNN)的混合课程强化学习框架,用于控制9自由度机械臂完成目标到达与抓取任务。为降低网络复杂度和推理延迟,SNN架构被简化为仅包含输入层和输出层,展现出在资源受限环境中的巨大潜力。结合脉冲神经网络的高推理速度、低功耗及生物合理性优势,引入时间进度分段的课程策略,并与近端策略优化(PPO)算法融合。同时,构建能量消耗建模框架,定量比较SNN与传统人工神经网络(ANN)的理论功耗。通过动态双阶段奖励调节机制和优化的观测空间设计,显著提升学习效率与策略准确性。在Isaac Gym仿真平台上的实验表明,该方法在真实物理约束下表现优异。与传统PPO及ANN基线相比,验证了其在动态机器人操作任务中的可扩展性与能效优势。
原文摘要 · Abstract (English)
This study proposes a hybrid curriculum reinforcement learning (CRL) framework based on a fully spiking neural network (SNN) for 9-degree-of-freedom robotic arms performing target reaching and grasping tasks. To reduce network complexity and inference latency, the SNN architecture is simplified to include only an input and an output layer, which shows strong potential for resource-constrained environments. Building on the advantages of SNNs-high inference speed, low energy consumption, and spike-based biological plausibility, a temporal progress-partitioned curriculum strategy is integrated with the Proximal Policy Optimization (PPO) algorithm. Meanwhile, an energy consumption modeling framework is introduced to quantitatively compare the theoretical energy consumption between SNNs and conventional Artificial Neural Networks (ANNs). A dynamic two-stage reward adjustment mechanism and optimized observation space further improve learning efficiency and policy accuracy. Experiments on the Isaac Gym simulation platform demonstrate that the proposed method achieves superior performance under realistic physical constraints. Comparative evaluations with conventional PPO and ANN baselines validate the scalability and energy efficiency of the proposed approach in dynamic robotic manipulation tasks.
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