Control, identification and diagnosis of networked and hybrid systems for fault tolerance

网络和混合系统的控制、识别和诊断以实现容错

• 批准号: 238941-2010
• 负责人: Zhao, Qing
• 金额: $ 1.89万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=547145
• 关键词: Control; identification; diagnosis; networked; hybrid

This proposal seeks support for a research program on developing advanced fault tolerance techniques for technical systems/processes in networked and hybrid configurations. Driven by the global need for plant optimization and information integration, introducing networking into system automation and control becomes a prominent trend in process industries. As a result, we are now experiencing a dramatic change of technical systems from traditional homogeneous and centralized configurations to hybrid and distributed ones. The fault tolerance issue becomes more stringent in this case. Indeed, faults in one part of the system can propagate through and affect the other parts even in remote locations. As one important objective, we intend to study the constraints and resources brought by the networks, and propose new design tools for fault diagnosis based on network data transmissions instead of traditional wired signal transmissions. Fundamental issues, e.g. time-delay, data loss, and time-varying uncertainties will be considered. Another objective is to study fault tolerant control systems from a hybrid system perspective, where different system operations, e.g. multiple faults, are described by discrete modes while the system dynamic behavior under each mode is governed by continuous-time or discrete-time states evolutions. System identification for such a hybrid system and its application to fault tolerant control will be researched. In fact, fault detection can be treated as the discrete mode estimation problem while the switching control strategy can be adopted for control reconfiguration in this case. At last in this program we seek to develop practical applications of fault diagnosis and fault tolerant control by applying the results to real-world problems. The proposed research program is inter-disciplinary that involves various topics in systems and control, signals, information systems and operations research. It can find vast applications not only in safety critical and highly autonomous systems but also in process control, manufacturing and energy industries, which nowadays have an increasing requirement on reliability and sustainability.

该提案寻求支持一项研究计划，以开发网络和混合配置中的技术系统/流程的高级容错技术。在全球对工厂优化和信息集成的需求的驱动下，将网络引入系统自动化和控制成为过程行业的重要趋势。结果，我们现在正在经历技术系统的巨大变化，从传统的同质和集中式配置到混合和分布式配置。在这种情况下，容错问题变得更加严格。实际上，系统的一部分中的故障也会传播并影响其他部分，即使在远程位置也是如此。作为一个重要目标，我们打算研究网络带来的约束和资源，并根据网络数据传输而不是传统的有线信号传输提出了新的设计工具，用于故障诊断。基本问题，例如将考虑时间延迟，数据丢失和随时间变化的不确定性。另一个目的是从混合系统的角度研究容错控制系统，其中不同的系统操作，例如多个故障通过离散模式描述，而每个模式下的系统动态行为则由连续时间或离散时间状态的演变控制。将研究这种混合系统的系统识别及其在容错控制方面的应用。实际上，可以将故障检测视为离散模式估计问题，而在这种情况下，可以采用切换控制策略进行控制重新配置。最后，在该计划中，我们试图通过将结果应用于现实世界中的问题来开发故障诊断和容错控制的实际应用。拟议的研究计划是跨学科的，涉及系统和控制，信号，信息系统和操作研究中的各种主题。它不仅可以在安全关键和高度自治系统中找到广泛的应用程序，而且还可以在过程控制，制造和能源行业中找到对可靠性和可持续性的需求越来越大。