Fault Detection in Nonlinear Systems using New Observers and Self-powered Sensors

使用新型观测器和自供电传感器进行非线性系统故障检测

• 批准号: 418375-2013
• 负责人: Vijayaraghavan, Krishna
• 金额: $ 1.75万
• 依托单位: Simon Fraser University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=667789
• 关键词: Fault; Detection; Nonlinear; Systems; using

Fault detection is difficult in real systems because of nonlinearities and parameter uncertainties. Such nonlinearities arise in green energy systems such as windmills and fuel-cells due to their underlying dynamics. Smart control systems can perform fault detection and identification (FDI), and parameter identification (PAI) in these systems by using an "observer" to estimate system states (values of internal variables) and comparing the expected system response with the true system response as measured by sensors. An emerging challenge for FDI lies in using signals from newer self-powered sensors that conserve power by providing discontinuous data. FDI using such sensors is particularly attractive in remote windmill installations. ** An explosion is anticipated in the number of green energy technologies requiring smart control systems. This demand is a direct result of global incentive programs, mandates and state government directives in growing economies like India to invest in green energy. Hence, amongst the many real-world applications, green energy technology such as fuel-cells and windmills will be the initial primary application area for this research.** In the next five years, the research program will: Obj1. Develop new nonlinear observers to broaden the scope of control theory and validate these techniques using models of fuel-cell stacks and windmill systems; Obj 2: Develop FDI techniques for uncertain nonlinear systems and validate these results using models of fuel-cell stacks; Obj 3: Develop FDI systems capable of using discontinuous sensor signals from new self-powered sensors such as battery-less wireless sensors and validate for the case of monitoring the structural health of wind turbines blades. The applicant's current collaborations with the green energy industry, such as with Ballard Power Systems (Canada) and RRB Energy (India), will be used to extend the anticipated advances and innovation in FDI and PAI to green energy systems.** This work will play a major role in training of HQP and in aiding the global competitiveness of Canada in the high-tech and green energy sectors.******

由于非线性和参数不确定性，实际系统中的故障检测很困难。由于其潜在的动力学特性，这种非线性出现在风车和燃料电池等绿色能源系统中。智能控制系统可以通过使用“观察者”估计系统状态（内部变量值）并将预期系统响应与真实系统响应进行比较，在这些系统中执行故障检测和识别（FDI）以及参数识别（PAI）：由传感器测量。 FDI 面临的一个新挑战在于使用来自新型自供电传感器的信号，这些传感器通过提供不连续数据来节省电力。使用此类传感器的外国直接投资在远程风车安装中特别有吸引力。 ** 预计需要智能控制系统的绿色能源技术数量将出现爆炸式增长。这种需求是印度等发展中经济体投资绿色能源的全球激励计划、任务和州政府指令的直接结果。因此，在众多现实应用中，燃料电池和风车等绿色能源技术将成为这项研究的最初主要应用领域。** 在未来五年中，该研究计划将： Obj1。开发新的非线性观测器，以扩大控制理论的范围，并使用燃料电池堆和风车系统的模型验证这些技术；目标 2：开发用于不确定非线性系统的 FDI 技术，并使用燃料电池堆模型验证这些结果；目标 3：开发能够使用来自新型自供电传感器（例如无电池无线传感器）的不连续传感器信号的 FDI 系统，并验证监测风力涡轮机叶片结构健康状况的情况。申请人目前与绿色能源行业的合作，例如与巴拉德电力系统（加拿大）和 RRB Energy（印度）的合作，将用于将 FDI 和 PAI 的预期进步和创新扩展到绿色能源系统。 ** 这项工作将在 HQP 培训和帮助加拿大在高科技和绿色能源领域提高全球竞争力方面发挥着重要作用。******