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How next-gen IMU-based sensor navigation will enable adoption of autonomous vehicles

机译:基于Gen IMU的传感器导航将如何采用自主车辆

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摘要

The reason IMUs are important is simplified here for clarity. Imagine a line drawn down the middle of this page, which would constitute the perfect path an autonomous vehicle needs to travel in a tunnel. Let's say it takes 30 minutes from one end to reach the other end of this perfectly straight tunnel. If the dead reckoning solution of the vehicle has a bias instability of 3 degrees per hour, by the end of the tunnel, the vehicle heading will be 1.5 degrees away from the line. Travelling at 20 km/hour, the vehicle will be going to the left or right 15 cm every second, likely resulting in the vehicle hitting another vehicle, a wall or both. Currently, the performance of many IMUs in the market is still not accurate enough, and requires a significant step function improvement in sensor performance, specifically when the vehicle is operating under a dead reckoning situation, for seconds, or potentially minutes at a time.
机译:IMus的原因是重要的,以便清楚起见。想象一条在本页中间绘制的线,这将构成自主车辆需要在隧道中旅行的完美路径。让我们说距离一端需要30分钟即可到达这个完美的直隧道的另一端。如果车辆的死算溶液在隧道末端每小时3度的偏置不稳定性,则车辆向导将远离线路1.5度。旅行在20公里/小时,车辆将左侧或右15厘米,可能导致车辆撞到另一辆车,墙壁或两者。目前,市场上许多IMU的性能仍然不够准确,并且需要在传感器性能下进行重大的一步函数,特别是当车辆在死亡的估算情况下运行时,秒或者一次潜在的分钟。

著录项

  • 来源
    《Electronic product design & test》 |2021年第1期|12-13|共2页
  • 作者

    James Fennclly;

  • 作者单位

    Inertial Measurement Systems at MEMS-based sensing technology expert ACEINNA;

  • 收录信息 美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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