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一个开源、低成本(<5000 美元)、可 3D 打印的人形机器人平台

一个开源、低成本(<5000 美元)、可 3D 打印的人形机器人平台

Berkeley Humanoid Lite(伯克利人形机器人 Lite 版) 是由加州大学伯克利分校 Hybrid Robotics 实验室开发的完全开源、低成本(<5000 美元)、可 3D 打印的人形机器人平台

设计理念

传统商用或研究级人形机器人往往价格高昂(数万美元甚至更高)、闭源或需要专业制造设备,导致普通研究者和爱好者难以入门。Berkeley Humanoid Lite 针对这些痛点提出了三大原则:

  • 低成本:美国市场总硬件成本约4312 美元(中国 sourcing 更低,约 3236 美元)。
  • 易获取与可定制:核心部件使用桌面级 FDM 3D 打印机(构建体积 ≤200×200×200 mm)制造 + 电商平台(如 Amazon、淘宝)广泛可购组件。
  • 模块化与可重构:执行器为独立模块,可快速重构出双足、 四足、半人马等不同形态。

最大创新在于3D 打印 Cycloidal(摆线)齿轮箱执行器。传统 3D 打印齿轮强度和耐久性差,而摆线齿轮通过多齿同时啮合、负载分散,完美适配塑料材料,同时保持高扭矩密度和紧凑体积。团队对执行器进行了大量耐久性测试,证明其可靠性。

硬件规格与详细设计

主要参数

  • 身高:0.8 m
  • 体重:16 kg
  • 执行器:10× 6512 大型执行器 +12× 5010 小型执行器(共约 22 个关节驱动)
  • 计算单元:Intel N95 Mini PC(机载,策略部署频率约 25 Hz)
  • 传感器:BNO085 IMU(手机级,通过 Arduino USB 连接,250 Hz)、AS5600 磁编码器(集成在每个执行器内)
  • 通信:CAN 2.0 总线(4 路 USB-CAN 适配器)
  • 电池:6S 4000 mAh LiPo(续航约 30 分钟,支持外接电源)
  • 结构材料:PLA 3D 打印件 + 铝挤压型材躯干 + 黄铜嵌件加强

执行器 BOM 示例(美国价格):

  • 6512 执行器 ≈ $188(含 M6C12 150KV 无刷电机、 B-G431B-ESC1 驱动板、轴承、3D 打印件等)
  • 5010 执行器 ≈ $136

完整机器人 BOM 包含 Mini PC、IMU、电池、 grippers(夹爪)、铝型材、3D 打印件等,总计约 4312 美元。

结构特点

  • 躯干采用铝挤压型材,便于安装 Mini PC、IMU 和电池。
  • 四肢大量使用 3D 打印 PLA 件,通过嵌入黄铜立柱和贯穿螺丝增强层间强度。
  • 高度模块化:执行器可作为独立单元快速更换或重构形态(论文中展示了从双足扩展到成人尺寸、加入碳纤维管、7 DoF 腿 + 灵巧手等变体)。

软件栈与控制系统

仓库采用Isaac Lab(基于 NVIDIA Isaac Sim)框架组织,符合其扩展规范:

  • source/berkeley_humanoid_lite/:自定义 Isaac Lab 环境与任务定义(强化学习 locomotion 策略训练)。
  • source/berkeley_humanoid_lite_assets/:机器人描述文件(URDF、MJCF、USD),支持从 Onshape CAD 导出。
  • source/berkeley_humanoid_lite_lowlevel/:真实机器人低层控制代码(CAN 总线通信、电机驱动、IMU 读取)。

控制流程

  1. 在 Isaac Lab 中进行策略训练 + sim2sim 验证。
  2. 通过 domain randomization 等技术实现零样本 sim-to-real 迁移(论文核心实验成果)。
  3. 低层代码部署到机载 Mini PC,通过 CAN 总线以 250 Hz 控制执行器。
  4. 支持运动捕捉(MoCap)与遥操作(teleoperation)用于上肢 manipulation 数据收集与控制。

实验演示与性能验证

核心实验成果

  • 零样本 sim2real  locomotion:强化学习策略直接从仿真部署到真实机器人,行走稳定。
  • 上肢 manipulation:成功演示玩魔方、用马克笔写“BHL”字样、与积木互动等任务,展示精密控制能力。

执行器性能测试

  • 机械效率最高可达 ~90%。
  • 在 locomotion 中仅使用执行器扭矩能力的 ~30%,留有较大裕量。
  • 刚度测试、效率 vs 扭矩曲线、功率测量等均有详细实验支撑。

成本-性能对比:定义了归一化性能因子 (\hat{p})(平均峰值扭矩 / 身高 / 体重)和性价比 (\varphi = \hat{p} / \text{cost})。Berkeley Humanoid Lite 在 <5000 美元价位段表现出极高的性价比,远超许多商用平台。

资源汇总(一键直达)

  • 官方网站:https://lite.berkeley-humanoid.org/
  • GitHub 主仓库:https://github.com/HybridRobotics/Berkeley-Humanoid-Lite
  • 论文:https://arxiv.org/abs/2504.17249 (PDF 直链见网站)
  • 主演示视频:https://youtu.be/dIdJGkMDFl4
  • 完整文档:https://berkeley-humanoid-lite.gitbook.io/docs
  • Releases(CAD/打印文件):GitBook Releases 页面
  • 相关子仓库:Berkeley-Humanoid-Lite-Lowlevel(低层控制)、Berkeley-Humanoid-Lite-Assets(模型文件)
  • 社区:Discord(网站有 QR)和微信群(网站有 QR)

引用格式(BibTeX)见 GitHub README 或论文。

总结

Berkeley Humanoid Lite 是继完整版 Berkeley Humanoid 之后,实验室为“普惠科研”推出的 Lite 版本。它不仅验证了 3D 打印摆线执行器在真实人形机器人上的可行性,更通过全栈开源(硬件设计、嵌入式代码、训练部署框架)为全球社区提供了可复制、可扩展的平台。无论你是想入门强化学习控制、研究 sim2real、还是动手制作自己的低成本人形机器人,这都是目前性价比最高、最开放的选择之一。

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  1. CONNECT:[ UseTime:0.000663s ] mysql:host=127.0.0.1;port=3306;dbname=wenku;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001061s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000365s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000287s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000616s ]
  6. SELECT * FROM `set` [ RunTime:0.000232s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000669s ]
  8. SELECT * FROM `article` WHERE `id` = 833747 LIMIT 1 [ RunTime:0.005309s ]
  9. UPDATE `article` SET `lasttime` = 1783218870 WHERE `id` = 833747 [ RunTime:0.016272s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000424s ]
  11. SELECT * FROM `article` WHERE `id` < 833747 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000667s ]
  12. SELECT * FROM `article` WHERE `id` > 833747 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000422s ]
  13. SELECT * FROM `article` WHERE `id` < 833747 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.002006s ]
  14. SELECT * FROM `article` WHERE `id` < 833747 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.004807s ]
  15. SELECT * FROM `article` WHERE `id` < 833747 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001976s ]
0.133602s