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首页> 外文期刊>IEEE Transactions on Aerospace and Electronic Systems >Fault-Tolerant Attitude Stabilization for Spacecraft With Low-Frequency Actuator Updates: An Integral-Type Event-Triggered Approach
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Fault-Tolerant Attitude Stabilization for Spacecraft With Low-Frequency Actuator Updates: An Integral-Type Event-Triggered Approach

机译：具有低频执行器更新的航天器容错姿态稳定：一种积分型事件触发方法

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摘要

This article investigates the attitude stabilization control problem with low-frequency communication to actuators in the framework of sampled-data control. A novel event-triggered sampling control policy is proposed by employing an integral-type triggering function where the determination of all sampling times is by judging the properties of this function including the integration of measurement errors. Using the Lyapunov-based approach, we show that the stability of the closed-loop system can be guaranteed in the presence of external disturbance, inertia uncertainty, and actuator fault. Compared with conventional attitude control policies, the proposed algorithm significantly reduces the data-rate requirement in updating the actuator while providing high reliability and accurate performance for attitude stabilization. Compared with the traditional event-triggered sampling, the proposed policy is no longer by judging the instantaneous state of measurement errors, which reduces the sampling frequency and does not increase the computational burden. Numerical simulations are conducted to show a decent performance of the algorithm.
机译：本文调查了对采样数据控制框架中的低频通信与执行器的姿态稳定控制问题。通过采用积分型触发功能提出了一种新的事件触发的采样控制策略，其中通过判断该函数的属性包括集成测量误差的功能。使用基于Lyapunov的方法，我们表明闭环系统的稳定性可以在外部干扰，惯性不确定性和执行器故障的存在下保证。与传统姿态控制政策相比，所提出的算法显着降低了更新执行器的数据速率要求，同时提供高可靠性和准确性能的姿态稳定。与传统的事件触发采样相比，所提出的政策不再通过判断测量误差的瞬时状态而不再降低采样频率，并且不会增加计算负担。进行数值模拟以显示算法的体面性能。

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