马科维交换系统的动态无传感器控制方法应用于具有时间延迟和部分输入和的PWM直流-直流转换器
Abdelmalek Zahaf1, Sofiane Bououden2, Mohammed Chadli3
1Faculty of Technology Sciences, Constantine 1-Frères Mentouri University, Constantine 25017, Algeria.
Sensors (Basel, Switzerland)
|August 12, 2023
概括
本研究介绍了一种无传感器控制策略,用于模拟马科夫跳跃系统的PWM直流-直流转换器. 该方法增强了干扰排斥和时间延迟补偿,以获得稳健的性能.
科学领域:
- 电力电子 电力电子 电力电子
- 控制系统工程 控制系统工程
- 系统理论 系统理论
背景情况:
- 脉冲宽度调制 (PWM) DC-DC转换器在电源管理中至关重要.
- 在时间延迟和负载变化等不确定性下控制这些转换器是具有挑战性的.
- 建模转换器作为马尔科夫跳跃系统捕捉了它们的动态行为.
研究的目的:
- 为PWM直流-直流转换器开发无传感器主动干扰排斥控制策略.
- 为了解决建模不确定性,时间延迟和负载变化.
- 将最佳控制问题重新构成一个凸起的优化问题.
主要方法:
- 模拟PWM直流-直流转换器作为一个离散时间马科夫交换系统.
- 提出了一个动态无传感器的活性干扰排斥控制设计.
- 使用一个强大的动态观察者预测控制器.
- 在不那么保守的条件下使用线性矩阵不等式 (LMIs).
- 使用Lyapunov-Krasovskii函数进行稳定性分析.
主要成果:
- 介绍了一种新的无传感器活性干扰排斥控制策略.
- 较不保守的稳定性条件是使用LMI衍生出来的.
- 控制器展示了有效的干扰拒绝和时间延迟补偿.
- 尽管存在系统不确定性和输入和,但仍然保持了强大的性能.
结论:
- 拟议的控制策略为PWM直流-直流转换器提供了一个有效的解决方案.
- 该方法有效地处理外部干扰和时间延迟.
- 模拟结果验证了拟议方法的稳定性和有效性.
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