零碎常量调节基于增益的无奇点的MRAC,适用于飞机控制系统
IEEE transactions on cybernetics
|May 19, 2025
概括
本研究提出了一种新的无奇点自适应控制方法,用于未知增益的线性系统. 该方法简化了参数估计,并确保了系统稳定性,而不需要高频增益信息.
科学领域:
- 控制系统工程 控制系统工程
- 适应性控制理论 适应性控制理论
- 系统识别系统识别系统
背景情况:
- 传统的自适应控制方法与未知的高频收益作斗争,通常需要复杂的切换或重复的参数估计.
- 现有的解决方案如Nussbaum和基于多个模型的方法在处理这些不确定性方面存在局限性.
- 需要强大的自适应控制策略,这些策略不那么受到限制,而且在计算上更有效.
研究的目的:
- 引入一种新的无奇点输出反模型参考自适应控制 (MRAC) 方法.
- 为了应对连续时间线性系统中未知的高频收益的挑战.
- 开发一种方法,简化参数估计,避免现有方法的局限性.
主要方法:
- 建议修改MRAC规律,以零碎的恒定调增益.
- 估计误差方程转化为线性回归形式,偏离典型的双线形式.
- 通过线性回归结构,对所有未知参数的直接估计得到了便利.
主要成果:
- 拟议的方法确保了闭环系统信号的边界性,没有高频增益信息.
- 它实现了系统输出与参考输出的融合 ($\lim_{t \to \infty} (y(t) -y^{*}(t)) =0$).
- 该方法克服了与Nussbaum和基于多个模型的自适应控制技术相关的局限性.
结论:
- 开发的无奇点MRAC方法为具有未知的高频增益的系统提供了强大的和简化的自适应控制方法.
- 与现有方法相比,它提供了一个更直接的参数估计策略.
- 模拟,包括飞机控制系统的例子,验证了拟议的控制策略的有效性和实际适用性.
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