设定点加权PI-FOPD级联控制器合成,用于不稳定的时间延迟过程,满足预先规定的安全边缘
1Department of Electrical Engineering, Tungnan University, No. 152, Section 3, Peishen Rd., Shenkeng Dist., New Taipei 222, Taiwan.
ISA transactions
|December 26, 2024
概括
一个新的控制器设计改善了跟踪,并减少了不稳定的时间延迟过程的超越. 这种方法提高了对干扰的稳定性,在模拟和实际应用中提供了卓越的性能.
科学领域:
- 控制工程 控制工程 控制工程
- 过程控制 过程控制
- 自动化系统 自动化系统
背景情况:
- 不稳定的时间延迟 (UTD) 过程由于固有的不稳定性和延迟而带来了重大控制挑战.
- 现有的控制器经常难以平衡UTD系统的快速跟踪,超速减速和稳定性.
- 模型订单减少或延迟近似可以在UTD过程的控制器设计中引入不准确性.
研究的目的:
- 引入一个新的设定点加权PI-FOPD (SWPI-FOPD) 级联控制器,并为UTD过程提供预过器.
- 制定一个四个阶段的设计策略,以提高跟踪,最大限度地减少超标,并确保稳定性.
- 为各种UTD过程命令提供控制器增益计算的系统程序.
主要方法:
- 一个四阶段的设计策略,包括最佳和强大的FOPD (ORFOPD) 和PI (ORPI) 控制器.
- 使用增益和相位差 (GPM) 测试器来确定可行的面向规范的区域 (FSOR).
- 实现设定点权重和预过器来管理超标和精制参考信号.
主要成果:
- 拟议的SWPI-FOPD控制器表现出快速跟踪响应,没有稳定状态错误.
- 实现了超越和积分绝对误差 (IAE) 或积分平方误差 (ISE) 的显著减少.
- 控制器保持了对±10%的循环增强扰动 (LGPs) 的增强强性.
结论:
- 带有预过器的SWPI-FOPD控制器为控制UTD过程提供了强大的和有效的解决方案.
- 系统设计程序有助于快速计算控制器增益.
- 通过模拟和实用的CSTR应用程序进行验证,展示了卓越的性能.
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