CAREER: Boundary Control Towards Smart Water Management Systems

职业：智能水管理系统的边界控制

• 批准号: 2302030
• 负责人: Mamadou Diagne
• 金额: $ 52.86万
• 依托单位: University of California-San Diego
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-10-01 至 2025-07-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2302030&HistoricalAwards=false
• 关键词: CAREER; Boundary; Control; Towards; Smart

This Faculty Early Career Development (CAREER) grant will provide viable solutions to control combined river-dam-reservoir systems in an era of unceasing growing demand for water and energy. Global warming is drastically altering rainfall patterns, increasing the risk of water scarcity. The rapid conversion of natural landscapes to urbanized areas that are continually growing in population further accentuates this issue. Sustainable management strategies are becoming critical to ensure the optimum use of essential but limited water resources on the planet. Often, river infrastructures such as dams, gates, and reservoirs are built to satisfy human societies' water and energy demands. However, the maintenance of costly engineered river infrastructures is still posing crucial problems related to reservoir sedimentation and ecosystem preservation. First, estimation methodologies that allow real-time quantification and monitoring of distributed profiles of sediments transported in a water channel from the measurement of appropriate quantities at gate locations will be developed. Second, flow control strategies for hydraulic systems governed by continuum models of density gradient induced by moving sediment will be exploited to ensure stable operation when gates release high discharges in the channel or reservoir, generating turbulence during sediment flushing or venting operations. An experimental setup that supports the feasibility and efficiency of the control/estimation methodologies will be designed. While advancing the science through the development of innovative real-time control and estimation approaches, the research program will be consolidated with an integrated educational plan with the introduction of a graduate course related to the research topic. This project will create opportunities for the participation of students in research and development in water management systems at the K-12, undergraduate, and graduate levels.The key idea of the research is to exploit PDE (Partial Differential Equation) boundary control techniques towards efficient water and sediment dynamics management. Fundamental balance equations reflecting the dynamics of coupled water and sediment waves, namely, the bilayer Saint-Venant model, which describes a multiphase flow with a density gradient, will be exploited to achieve the objective. The main difficulties to overcome involve the real-time monitoring of distributed sediment bed profiles and disturbances arising from flushing processes such as shock-waves and hydraulic jumps generated by significant gate discharges over channels. Strongly coupled nonlinear hyperbolic PDEs and mixed systems consisting of cascading hyperbolic PDEs and ODE (Ordinary Differential Equations) are relevant to the flow physics problems. The backstepping control technique combined with Lyapunov analysis will be employed to derive high-performance observers and controllers that solely use gate actuation dynamics and output measurements to enable fast and exponential stabilization at a prescribed setpoint. Various extensions of the theoretical outcomes of the research can essentially solve decisive challenges related to the control of traffic dynamics, networks of sewer systems, and pollutant transport in water flow, to name a few.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该教师早期职业发展（CAREER）补助金将为在水和能源需求不断增长的时代控制河流-大坝-水库组合系统提供可行的解决方案。全球变暖正在极大地改变降雨模式，增加水资源短缺的风险。自然景观迅速转变为人口不断增长的城市化地区，进一步加剧了这一问题。可持续管理战略对于确保地球上必要但有限的水资源的最佳利用变得至关重要。通常，修建水坝、闸门和水库等河流基础设施是为了满足人类社会对水和能源的需求。然而，昂贵的河流基础设施的维护仍然面临着与水库沉积和生态系统保护相关的关键问题。首先，将开发一种估算方法，通过在闸门位置测量适当的数量来实时量化和监测水道中输送的沉积物的分布剖面。其次，将利用由移动沉积物引起的密度梯度连续体模型控制的液压系统的流量控制策略，以确保当闸门在渠道或水库中释放高流量、在沉积物冲刷或排气操作期间产生湍流时稳定运行。将设计一个支持控制/估计方法的可行性和效率的实验装置。在通过开发创新的实时控制和估计方法来推进科学发展的同时，研究计划将与综合教育计划相结合，引入与研究主题相关的研究生课程。该项目将为 K-12、本科生和研究生级别的学生参与水管理系统的研究和开发创造机会。该研究的关键思想是利用 PDE（偏微分方程）边界控制技术实现高效水和沉积物动态管理。将利用反映耦合水波和沉积物波动力学的基本平衡方程，即描述具有密度梯度的多相流的双层圣维南模型来实现这一目标。需要克服的主要困难包括实时监测分布式沉积物床剖面和冲刷过程产生的扰动，例如河道上大量闸门流量产生的冲击波和水跃。强耦合非线性双曲偏微分方程以及由级联双曲偏微分方程和常微分方程（ODE）组成的混合系统与流动物理问题相关。反步控制技术与李亚普诺夫分析相结合，将用于衍生高性能观测器和控制器，它们仅使用门驱动动力学和输出测量来实现在指定设定点的快速和指数稳定。该研究的理论成果的各种扩展可以从本质上解决与交通动态控制、下水道系统网络和水流污染物输送等相关的决定性挑战。该奖项反映了 NSF 的法定使命，并被认为是值得的通过使用基金会的智力优势和更广泛的影响审查标准进行评估来获得支持。