arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2402.05064eess.SYcs.SY
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调整反馈控制器增益是提升自动驾驶性能的简单方法

Tuning the feedback controller gains is a simple way to improve autonomous driving performance

Wenyu Liang, Pablo R. Baldivieso, Ross Drummond, Donghwan Shin

AI总结:

本文通过调整TCP算法中纵向控制器的PID增益,将CARLA驾驶评分从73.21提升至77.38,证明重新调整反馈控制器是提升自动驾驶性能的简单有效方法,尤其在复杂场景下效果显著。

摘要:

典型的自动驾驶系统是机器学习算法(通常涉及神经网络)与经典反馈控制器的组合。尽管近年来在神经网络的改进方面取得了显著进展,但在反馈控制器方面的进展却有限。通常,反馈控制增益只是从一篇论文传递到另一篇论文,很少进行重新调整,即使神经网络的变化可能改变车辆的闭环动力学。本文旨在强调这种方法的局限性;研究表明,重新调整反馈控制器可以成为提升自动驾驶性能的一种简单方法。为证明这一点,对TCP自动驾驶算法中纵向控制器的PID增益进行了调整。这使得CARLA中的驾驶评分从73.21提高到77.38,结果在16个驾驶场景中取平均值。此外,观察到性能提升在具有挑战性的驾驶场景(如雨天或夜间)中最为明显,因为调整后的控制器带来了更果断的驾驶风格。这些结果证明了同时开发自动驾驶系统的神经网络和反馈控制策略的价值,因为这可以成为提升自动驾驶系统性能和鲁棒性的一种简单且系统化的方法。

英文摘要:

Typical autonomous driving systems are a combination of machine learning algorithms (often involving neural networks) and classical feedback controllers. Whilst significant progress has been made in recent years on the neural network side of these systems, only limited progress has been made on the feedback controller side. Often, the feedback control gains are simply passed from paper to paper with little re-tuning taking place, even though the changes to the neural networks can alter the vehicle's closed loop dynamics. The aim of this paper is to highlight the limitations of this approach; it is shown that re-tuning the feedback controller can be a simple way to improve autonomous driving performance. To demonstrate this, the PID gains of the longitudinal controller in the TCP autonomous vehicle algorithm are tuned. This causes the driving score in CARLA to increase from 73.21 to 77.38, with the results averaged over 16 driving scenarios. Moreover, it was observed that the performance benefits were most apparent during challenging driving scenarios, such as during rain or night time, as the tuned controller led to a more assertive driving style. These results demonstrate the value of developing both the neural network and feedback control policies of autonomous driving systems simultaneously, as this can be a simple and methodical way to improve autonomous driving system performance and robustness.

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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