Safety Assessment and Risk-informed Design of Networked Control Systems

网络控制系统的安全评估和风险告知设计

• 批准号: 327716-2013
• 负责人: Lu, Lixuan
• 金额: $ 1.68万
• 依托单位: University of Ontario Institute of Technology
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=696252
• 关键词: Safety; Assessment; Risk; informed; Design

Aging and obsolescence of control systems have emerged as a more and more serious problem in multiple industries, including Nuclear Power Plants (NPP). However, both the utilities and regulatory agencies maintain healthy skepticism on any changes of existing engineering systems, if there is a slight uncertainty that the new technology might endanger public safety. Meanwhile, technology advancement in the control field has enabled the emergence of modern control systems, such as Networked Control Systems (NCS). These systems are advantageous in many aspects, such as more flexibility and less maintenance. However, reliability and safety issues have to be adequately addressed before they can be adopted to retrofit existing systems. New design of control systems are also needed to support next generation NPP and other industries. Lack of a systematic reliability and safety assessment program for NCS and design of such systems based on safety insights (risk-informed design) open a unique angle for this research program. There are three short-term objectives: 1) Develop a comprehensive reliability and safety modeling strategy for NCS, especially in safety-critical applications; 2) Perform reliability and safety assessment based on the newly-developed model to extract risk-related information; and 3) Risk-informed design of a benchmark NCS based on insights from the reliability and safety assessment. The long-term objectives beyond the next five years include: 1) Contribute to the development and qualification of next-generation control systems; and 2) Provide technical inputs to policy-making regulatory bodies in the area of control system safety assessment. A research team that encompasses one undergraduate research assistant, two Master students and two Ph.D. students will be established through this research program. They are expected to play a major role in sustaining future development on safety assessment and risk-informed design of NCS.

控制系统的老化和过时已经成为包括核电站（NPP）在内的多个行业中越来越严重的问题。然而，如果新技术可能危及公共安全存在轻微的不确定性，公用事业和监管机构都对现有工程系统的任何变化持健康的怀疑态度。与此同时，控制领域的技术进步使得现代控制系统，如网络控制系统（NCS）的出现成为可能。这些系统在许多方面是有利的，例如更大的灵活性和更少的维护。然而，在采用这些系统改造现有系统之前，必须充分解决可靠性和安全性问题。还需要新的控制系统设计来支持下一代NPP和其他行业。 缺乏一个系统的可靠性和安全性评估计划的NCS和设计这样的系统的基础上的安全见解（风险知情设计）打开了一个独特的角度，这项研究计划。短期目标有三个：1）为NCS开发全面的可靠性和安全性建模策略，特别是在安全关键应用中; 2）基于新开发的模型进行可靠性和安全性评估，以提取风险相关信息; 3）基于可靠性和安全性评估的见解，对基准NCS进行风险知情设计。未来五年的长期目标包括：1）为下一代控制系统的开发和认证做出贡献; 2）为控制系统安全评估领域的决策监管机构提供技术投入。 一个研究团队，包括一个本科生研究助理，两个硕士生和两个博士。学生将通过这项研究计划建立。他们预计将发挥重要作用，在维持未来的发展安全评估和风险知情设计的NCS。