Using Feedback Mechanism to Control Phase Transition of Vanadium Dioxide to Exploit its Full Operating Range

利用反馈机制控制二氧化钒的相变以充分发挥其工作范围

• 批准号: 1728255
• 负责人: Beibei Ren
• 金额: $ 18.23万
• 依托单位: Texas Tech University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-10-01 至 2020-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1728255&HistoricalAwards=false
• 关键词: Using; Feedback; Mechanism; Control; Phase

Vanadium dioxide (VO2) is a smart multifunctional material which has characteristic transition between its metal and insulator phases, which have abrupt and substantial changes (several orders of magnitude) in electrical, optical, and mechanical properties. This has led to considerable attention in a variety of applications including sensors, actuators, and high-speed switches. However, the digital ON/OFF abruptness of the metal-insulator phase transition of VO2 with a sharp and narrow temperature window limits its further development for applications that demand analog operation mode with continuously tunable properties. This project will try to exploit the mechanisms of feedback to enable the use of full operational range of VO2 and thereby significantly enhancing their wide-spread applicability like it did for operational amplifiers several decades ago. The research will leverage inherent complex dynamic behavior of VO2 in transition phase to achieve reconfiguration capability using advances in feedback control theory. The potential impact is significant as the outcomes of this research will enable more powerful and capable devices for analog applications in several fields. For example, VO2 with reconfigurable phase transition optical property will facilitate advances in terahertz optical devices with applications in imaging and spectroscopy for medical diagnostics and biology, broadband communications, security, defense, and nondestructive testing. The research results will be incorporated into both undergraduate and graduate education and will be disseminated to public through educational and outreach activities.The project will investigate the feasibility of empowering VO2 with reconfigurable phase transition via introducing the fundamental feedback mechanisms in control theory to achieve its full operational range. The project will develop new knowledge on modeling and control of systems with uncertainties and hysteresis to achieve both precise continuous VO2 phase transition and high modulation depth simultaneously. The new knowledge will constitute a fundamental contribution that will benefit several other applications where control of dynamic nonlinearities such as hysteresis under uncertainties is required. Both reconfigurable VO2 hardware-in-the-loop and experimental test beds will be built to validate the methodologies by leveraging the available facilities and resources at Texas Tech University?s Nano Tech Center. The research also has a nice blend of theoretical, experimental, and computational work. The project has novel outreach activities such as infusion of research elements into novel hands-on experiments for K-12 students and underrepresented groups.

二氧化钒（VO2）是一种智能多功能材料，它具有金属相和绝缘体相之间的特征转变，其电学、光学和机械性能会发生突然而实质性的变化（几个数量级）。这在各种应用中引起了相当大的关注，包括传感器、执行器和高速开关。然而，VO2金属-绝缘体相变的数字开/关突兀性，具有尖锐和狭窄的温度窗口，限制了它在需要具有连续可调谐特性的模拟操作模式的应用中的进一步发展。该项目将尝试利用反馈机制，以实现VO2的全工作范围使用，从而显着提高其广泛的适用性，就像几十年前对运算放大器所做的那样。该研究将利用VO2在过渡阶段固有的复杂动态行为，利用反馈控制理论的进展来实现重新配置能力。潜在的影响是重大的，因为这项研究的结果将使更强大和更有能力的设备在多个领域的模拟应用。例如，具有可重构相变光学特性的VO2将促进太赫兹光学器件在医学诊断和生物学、宽带通信、安全、国防和无损检测等成像和光谱领域的应用。研究结果将纳入本科和研究生教育，并将通过教育和推广活动向公众传播。该项目将通过引入控制理论中的基本反馈机制来研究赋予VO2可重构相变的可行性，以实现其全工作范围。该项目将开发具有不确定性和迟滞的系统建模和控制的新知识，以同时实现精确的连续VO2相变和高调制深度。新的知识将构成一个基本的贡献，将有利于其他几个应用控制动态非线性，如不确定条件下的迟滞。利用德克萨斯理工大学的现有设施和资源，将建立可重构的VO2硬件在环和实验测试平台，以验证方法。纳米技术中心。这项研究还很好地融合了理论、实验和计算工作。该项目有新颖的外展活动，例如将研究元素注入K-12学生和代表性不足的群体的新颖动手实验中。

项目成果

Uncertainty and Disturbance Estimator-Based Backstepping Control for Nonlinear Systems With Mismatched Uncertainties and Disturbances

• DOI: 10.1115/1.4040590
• 发表时间: 2018-07
• 期刊: Journal of Dynamic Systems, Measurement, and Control
• 作者: Jiguo Dai;B. Ren;Qing-Chang Zhong

Output Feedback Trajectory Tracking Control via Uncertainty and Disturbance Estimator

通过不确定性和干扰估计器进行输出反馈轨迹跟踪控制

• DOI: 10.23919/acc.2018.8431263
• 发表时间: 2018
• 期刊: 2018 Annual American Control Conference (ACC
• 作者: Dai, Jiguo;Ren, Beibei;Zhong, Qing-Chang
• 通讯作者: Zhong, Qing-Chang

Continuous Phase Tuning of Vanadium Dioxide Films Using Robust Feedback Mechanism

• DOI: 10.23919/acc.2019.8815224
• 发表时间: 2019-07
• 期刊: 2019 American Control Conference (ACC)
• 作者: Jiguo Dai;Chandika Annasiwatta;A. Bernussi;Zhaoyang Fan;J. Berg;B. Ren

UDE-Based Robust Output Feedback Control With Applications to a Piezoelectric Stage

• DOI: 10.1109/tie.2019.2941169
• 发表时间: 2020-09-01
• 期刊: IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
• 影响因子: 7.7
• 作者: Ren, Beibei;Dai, Jiguo;Zhong, Qing-Chang
• 通讯作者: Zhong, Qing-Chang

Continuous Phase Control of Vanadium Dioxide Films

• DOI: 10.1115/1.4046929
• 发表时间: 2020-09
• 期刊: Journal of Dynamic Systems Measurement and Control-transactions of The Asme
• 影响因子: 1.7
• 作者: Jiguo Dai;Chandika Annasiwatta;A. Bernussi;Zhaoyang Fan;J. Berg;B. Ren