Time and Event Driven Control Systems

传统的工业设备通过工业计算机进行监控， 业务是常态。数字控制是这种时间驱动系统的范例。这种数字控制范例使用一个基本假设，即所有信号和 系统在时间上被周期性地采样。然而，这种假设在现代社会已经不再适用。 工业系统，因为两个原因。首先，整合新的通信和计算技术产生了一类新的系统，称为网络物理系统，其中网络协议和 实时计算机算法由事件演化，并且是事件驱动的。其次，大多数现有的工业设施仍然由人类操作员通过警报监控系统进行操作。工业工厂是否可以完全自动化， 运营商的介入？这将需要将报警系统与控制 系统;但警报系统是事件驱动的，违反了周期性假设。 主要研究目标是开发一种 分析和设计混合时间和事件驱动控制系统的统一范例。这样的系统对控制工程师和设计师提出了巨大的挑战 由于控制、计算和通信组件之间的相互作用，以及两者的包含， 时间和事件驱动机制。拟议的研究计划涵盖建模，状态估计，时间和事件驱动系统的控制设计，控制和报警系统的集成，并研究 对控制和监视目的都很重要的属性，例如稳定性、控制性能、通信和计算资源使用、故障检测精度， 和故障诊断能力。 研究问题是复杂和具有挑战性的，需要大量的创新和原创性， 发现有效和高效的新解决方案。由于事件驱动系统一般都是时变的、非线性的，传统的基于频域的方法不适用。的 计划的方法将在一般的时域，使用状态空间模型的连续时间过程， 基于时间和事件驱动操作的时间方程，基于李雅普诺夫的闭环稳定性参数 用于分析和设计解决方案的分析和优化工具。 拟议的研究计划的目标是控制系统领域的知识进步， 电气、化学和机械工程。新奇和预期的意义包括：它将解决控制系统社区面临的主要挑战，并希望影响理论和 它将为控制工程师和从业人员提供新的工具，用于分析和综合 最后，它将通过参与与技术和工业有关的研究生培训，使加拿大工业受益。

Traditional industrial facilities are monitored and controlled through industrial computers, in which time driven operations are the norm. Digital control is the paradigm for such time driven systems. This digital control paradigm uses a fundamental assumption that all signals and systems are sampled periodically in time. However, such an assumption is no longer valid in modern industrial systems because of two reasons. First, integrating new communication and computing technologies generates a new class of systems called cyber-physical systems, in which network protocols and real-time computer algorithms evolve by events, and are event driven. Second, most existing industrial facilities are still operated by human operators through alarm monitoring systems. Could industrial plants be fully automated, without the intervention of operators at all? This would require incorporating alarm systems with control systems; but alarm systems are event driven, violating the periodicity assumption. The main research objective is to develop a unified paradigm for analysis and design of hybrid time and event driven control systems. Such systems present tremendous challenges for control engineers and designers because of the interactions among control, computation, and communication components, and inclusion of both time and event driven mechanism. The proposed research program covers modeling, state estimation, and control design of time and event driven systems, integration of control and alarm systems, and studying the properties of importance to both control and monitoring purposes, such as stability, control performance, communication and computing resource usage, fault detection accuracy, and fault diagnosis capabilities. The research problems are complex and challenging, requiring a great deal of innovation and originality to uncover new solutions which are effective and efficient. Since event driven systems are in general time-varying and nonlinear, traditional frequency-domain based methods are not applicable. The planned approach would be in general time-domain, using state-space models for continuous-time processes, time based equations for time and event driven operations, Lyapunov based argument for closed-loop stability analysis, and optimization tools for analysis and design solutions. The proposed research program targets knowledge advance in the field of Control Systems which is relevant to electrical, chemical, and mechanical Engineering. The novelty and expected significance include: It would address major challenges facing the control systems community, and hopefully impact both the theory and practice; it would provide control engineers and practitioners with new tools for analysis and synthesis of cyber-physical systems; finally, it would benefit Canadian industry by engaging in technology- and industry-relevant research student training.