平流层飞艇的迎风鲁棒定点控制
首发时间:2019-05-10
摘要:研究了平流层飞艇的迎风鲁棒定点问题。建立了飞艇简化的一维动力学模型,并将定点驻留描述为一个鲁棒反馈控制问题。分析了PD和PID控制器的稳定性和鲁棒性,提出了双滞回的PD-PID控制器切换策略。理论分析和数值仿真表明,该策略可以克服飞艇自身参数和外部风速的不确定性,将飞艇控制在期望位置。
关键词: 控制理论与控制工程; 平流层飞艇; 定点保持; 稳定性; 鲁棒性; 控制器切换
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Robustly Station-Keeping for the Airship Subject to Stratospheric Wind
Abstract:The problem of stratospheric airship's robustly station-keeping is investigated. A simplified one-dimensional dynamic model of the airship is established and the station-keeping problem is formulated as a robust feedback control problem. The stability and robustness of PD and PID controllers are analyzed and a PD-PID switching control strategy with double hysteresis is proposed. Theoretical analysis and numerical simulations show that with the strategy, the airship can be robustly kept at the expect point against the uncertainty of the airship's parameters and the wind velocity.
Keywords: Control Theory and Control Engineering Stratospheric airship Station-keeping Stability Robustness Controller switching
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