arXiv:2411.05799cs.ROcs.AI2024-11被引 1

超快3D物理模拟器,让AI训练效率提升千倍以上。

NeoPhysIx: An Ultra Fast 3D Physical Simulator as Development Tool for AI Algorithms

  • 采用点云碰撞、关节角度等简化算法加速模拟
  • 单核运行9小时完成机器人半年寿命仿真
  • 适合需要快速迭代的机器人控制与进化算法研究

传统AI算法如遗传编程和强化学习在模拟真实物理场景时需大量计算资源。尽管多核处理有进展,但刚体动力学的并行化仍受限于通信开销。本文提出NeoPhysIx,一种新型3D物理模拟器,通过创新模拟范式和关键算法简化,实现超过1000倍于实时速度的加速。该系统采用点云碰撞检测、关节角度确定和摩擦力估算等策略。在训练一个18自由度、6传感器的足式机器人时,仅用单个中端CPU核心9小时即完成半年人工寿命的仿真,显著提升AI开发效率,为物理驱动型AI提供高效工具。

原文摘要 · Abstract (English)

Traditional AI algorithms, such as Genetic Programming and Reinforcement Learning, often require extensive computational resources to simulate real-world physical scenarios effectively. While advancements in multi-core processing have been made, the inherent limitations of parallelizing rigid body dynamics lead to significant communication overheads, hindering substantial performance gains for simple simulations. This paper introduces NeoPhysIx, a novel 3D physical simulator designed to overcome these challenges. By adopting innovative simulation paradigms and focusing on essential algorithmic elements, NeoPhysIx achieves unprecedented speedups exceeding 1000x compared to real-time. This acceleration is realized through strategic simplifications, including point cloud collision detection, joint angle determination, and friction force estimation. The efficacy of NeoPhysIx is demonstrated through its application in training a legged robot with 18 degrees of freedom and six sensors, controlled by an evolved genetic program. Remarkably, simulating half a year of robot lifetime within a mere 9 hours on a single core of a standard mid-range CPU highlights the significant efficiency gains offered by NeoPhysIx. This breakthrough paves the way for accelerated AI development and training in physically-grounded domains.

物理模拟强化学习机器人

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