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首页> 外文期刊>Industrial Electronics, IEEE Transactions on >Fault-Tolerant Control Algorithm for a Four-Corner Closed-Loop Air Suspension System
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Fault-Tolerant Control Algorithm for a Four-Corner Closed-Loop Air Suspension System

机译：四角闭环空气悬架系统的容错控制算法

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摘要

This paper presents a new systematic control and fail-safe design methodology for a four-corner closed-loop air suspension (CLAS) system. The proposed control algorithm consists of “system control” determining the target heights of the four corners of the vehicle body from driving conditions and from the driver''s commands and “actuator control” achieving the target heights by controlling actuators. A sliding-mode control with phase-compensated feedback signal is applied as the main part of the system control. With the use of the sliding-mode control, the proposed system control can improve control accuracy and robustness against delays and disturbances as well as reduce the bounce oscillation of the vehicle body. This paper proposes a stepwise height control as the actuator control to overcome the limited power of the production CLAS system. The stepwise height control adjusts the front corners and the rear corners alternately until the four corners reach their corresponding target heights. A fail-safe algorithm (FA) is also proposed to provide the fault detection (FD), diagnosis, and management of the CLAS. In particular, a model-based FD method for the pressure sensor and the height sensors, which are critical components in the CLAS control system, has been proposed. A mathematical model of a CLAS system is developed for algorithm development and simulation. The proposed control algorithm and FA are verified by simulations and actual vehicle tests.
机译：本文提出了一种用于四角闭环空气悬浮（CLAS）系统的新的系统控制和故障安全设计方法。所提出的控制算法包括“系统控制”，该“系统控制”根据驾驶条件和驾驶员命令确定车身四个角的目标高度，以及“执行器控制”，通过控制执行器来达到目标​​高度。具有相位补偿反馈信号的滑模控制被用作系统控制的主要部分。通过使用滑模控制，所提出的系统控制可以提高控制精度和鲁棒性以抵抗延迟和干扰，并减少车身的反弹振动。本文提出了一种逐步高度控制作为执行器控制，以克服生产CLAS系统的有限功率。逐步的高度控件交替调整前角和后角，直到四个角达到其相应的目标高度。还提出了一种故障安全算法（FA），以提供CLAS的故障检测（FD），诊断和管理。特别地，已经提出了用于压力传感器和高度传感器的基于模型的FD方法，压力传感器和高度传感器是CLAS控制系统中的关键部件。针对算法开发和仿真，开发了CLAS系统的数学模型。仿真和实际车辆测试验证了所提出的控制算法和FA。

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