arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2310.04874cs.ROcs.AI
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AirIMU: 面向惯性里程计的不确定性传播学习

AirIMU: Learning Uncertainty Propagation for Inertial Odometry

Robotics Institute, Carnegie Mellon University(卡内基梅隆大学机器人研究所);University at Buffalo(布法罗大学);OPPO US Research Center(OPPO美国研究中心)

Yuheng Qiu, Chen Wang, Can Xu, Yutian Chen, Xunfei Zhou, Youjie Xia, Sebastian Scherer

AI总结:

针对传统惯性里程计噪声模型简化、数据驱动方法泛化性差的问题,提出混合框架AirIMU,结合数据驱动估计非确定性误差与基于模型方法提升泛化性,在多类IMU和多平台上验证有效,位姿图优化精度提升31.6%。

摘要:

采用捷联惯性测量单元(IMUs)的惯性里程计(IO)在众多需要精确朝向与位置跟踪的机器人应用中至关重要。现有基于运动学运动模型的IO方法通常使用简化的线性化IMU噪声模型,因此往往难以对由环境干扰和机械缺陷引发的非确定性误差建模。相比之下,数据驱动的IO方法难以准确对传感器运动建模,常导致泛化性与互操作性问题。为应对这些挑战,我们提出AirIMU,这是一种混合方法,通过数据驱动方法估计不确定性(尤其是非确定性误差),并借助基于模型的方法提升泛化能力。我们使用从低成本汽车级到高端导航级的全谱系IMU验证了AirIMU的适应性。我们还在多种平台上验证了其有效性,包括手持设备、车辆以及一架覆盖262公里轨迹的直升机。在消融研究中,我们在IMU-GPS位姿图优化实验中验证了所学习的不确定性的有效性,实现了31.6%的精度提升。实验表明,联合训练IMU噪声校正与不确定性估计可对两项任务产生协同增益。

英文摘要:

Inertial odometry (IO) using strap-down inertial measurement units (IMUs) is critical in many robotic applications where precise orientation and position tracking are essential. Prior kinematic motion model-based IO methods often use a simplified linearized IMU noise model and thus usually encounter difficulties in modeling non-deterministic errors arising from environmental disturbances and mechanical defects. In contrast, data-driven IO methods struggle to accurately model the sensor motions, often leading to generalizability and interoperability issues. To address these challenges, we present AirIMU, a hybrid approach to estimate the uncertainty, especially the non-deterministic errors, by data-driven methods and increase the generalization abilities using model-based methods. We demonstrate the adaptability of AirIMU using a full spectrum of IMUs, from low-cost automotive grades to high-end navigation grades. We also validate its effectiveness on various platforms, including hand-held devices, vehicles, and a helicopter that covers a trajectory of 262 kilometers. In the ablation study, we validate the effectiveness of our learned uncertainty in an IMU-GPS pose graph optimization experiment, achieving a 31.6\% improvement in accuracy. Experiments demonstrate that jointly training the IMU noise correction and uncertainty estimation synergistically benefits both tasks.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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