对于具有未知输入的系统的规定的时间功能观察员
Jiatong He1, Jiancheng Zhang1, Yan Wang2
1School of Science, Jiangnan University, Wuxi, 214122, China.
ISA transactions
|April 18, 2025
概括
本研究引入了一种新方法,通过将目标向量重新构成LTI系统状态来设计规定的时间功能观察器 (PTFO). 这种方法可以在用户定义的时间内准确估计,避免常见的观察者跳跃.
科学领域:
- 控制系统工程 控制系统工程
- 观察者设计 观察者设计
- 系统识别系统识别系统
背景情况:
- 传统的观察者设计往往在精确的时间限制下扎.
- 规定的时间功能观察员 (PTFO) 旨在在用户定义的时间框架内估计系统状态.
- 现有的PTFO方法可能会受到不良状态跳跃的影响.
研究的目的:
- 提出一种用于设计PTFO的新方法.
- 在用户定义的时间内解决状态估计的挑战.
- 克服现有的PTFO设计的局限性,例如状态跳跃.
主要方法:
- 系统重构以将目标向量视为LTI系统的状态变量.
- 应用经典的Luenberger状态观察员到重新构成的系统.
- 从单个输出到多个输出的情况下,扩展观察者设计.
- 为实现PTFO制定必要和充分的条件.
主要成果:
- 开发了一个PTFO,能够在用户定义的时间内准确估计目标向量.
- 提出的方法有效地扩展到多个输出系统.
- 观察者设计避免了通常在恩格尔的规定时间观察者中观察到的跳跃.
- 为实现PTFO的充分和必要条件得出.
结论:
- 这种新的重构方法促进了有效的PTFO设计.
- 该方法提供了准确的状态估计,保证了时间,并避免了状态跳跃.
- 实现的明确条件允许在实施前进行兼容性评估.
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