报告一题目：Power optimization of sliding triboelectric energy harvesting device
报告一简介：The study presents an optimization algorithm for developing a sliding triboelectric harvesting energy device. This presentation addresses the challenge of developing such an approach using an external excitation. The size limitations and the ratio of the width of the grating structure of the device provides an excellent opportunity for configuration optimisation depending on the set of input parameters, which in the case of harmonic excitation are its amplitude and frequency. To validate the numerical model an experimental prototype is built and tested. Finite element analysis is used to take into account the edge effect, relevant to the electrical field distribution then the width of the grating structure becomes comparable with its thickness. These effects are incorporated into a dynamic model of the device and used in conjunction with the multidimensional surrogate optimization algorithm to maximize the device's performance considering the device's overall size, different structural sizes, different excitation parameters, the number of hollow-out unit, and other important parameters of the device. Optimization approaches in triboelectric energy harvesting have mostly been carried out within the electrical circuit, optimising its resistance. In this work, optimization involves both the mechanical and electrical components of the device. Some interesting results of optimisation are derived for the first time based on the optimisation results. It is show that in some cases the optimisation may increase the power output of the triboelectric device by 300%.
报告人简介：
Dr. Yurchenko is interested in Nonlinear and Stochastic Dynamics, Control Theory, Vibration, Stability and Bifurcation Analysis, Mathematical and Experimental Modelling of complex dynamic systems with application in energy harvesting. In 2001 he obtained a PhD degree in Mechanical Engineering from Worcester Polytechnic Institute, USA on the development of stochastic optimal control theory and analysis of non-smooth systems and accepted the position of Assistant Professor at the University of Miami. In 2005 he was offered a post of Associate Professor at the Department of Mathematical Sciences of Saint-Petersburgh State Polytechnic University, Russia. He received a Doctor of Science degree (habilitation) in 2007 and in 2008 he received a Young Scientists Award from the Russian President Science Council. In 2008 he was promoted to a full Professor and became a deputy head of the MS program in Mechanics. In 2010 Dr. Yurchenko joined the Mechanical Engineering Department of Heriot-Watt University as an Associate Professor, leading the research work in Dynamics and Control theory, then later he moves to the University of Southampton. Dr. Yurchenko has published over 150 scientific publications including peer reviewed journals and conference proceedings, delivered multiple invited talks and keynote lectures, led a number of industrial projects and received grants from EPSRC and the Royal Society. He is an Editorial board member of Mechanical Systems and Signal Processing, Int. J. of Dynamics and Control, Vibrations, Journal of Vibration Testing and System Dynamics.
报告二题目：Nonlinearity of the interface circuit and energy harvester for piezoelectric energy harvesting
报告二简介：利用环境中的振动能量转换为电能，为低功耗器件供电，实现自供电无线传感是当前的研究热点。由于环境中的振动随机性强，频率和振幅变化范围大，因此需要高效俘能系统进行能量俘获以满足电力需求。压电俘能系统具有较高的机电转换能力和耦合特性，具有良好的应用前景。但是由于其高阻抗等电学特性，对非线性接口电路设计提出了更高的要求。本报告将对俘能接口电路的设计理论和非线性优化方法进行阐述；结合目前研究，对非线性俘能器研究、建模和分析进行介绍和展望，为压电俘能系统设计及实用化提供参考和理论支持。
报告人简介：
张斌，山东大学机电与信息工程学院副教授，硕士生导师。2014年博士毕业于法国里昂国立应用科学学院，主要从事振动能量收集、振动控制与减振设计、机电装备故障诊断与结构健康监测等方面的研究。近年来，主持国家级项目/课题2项，省部级项目3项，市级/横向课题10余项，发表论文30余篇，包括MSSP、AMM(English Edition)等高水平期刊，授权发明专利3项。入选“山东大学（威海）青年学者未来计划”、被评为“威海市校地合作人才”等。目前为全国研究生教育评估监测专家库专家，山东省装备制造业协会专家，中国仪表功能学会电子元器件关键材料与技术专业委员会高级会员，是SMS、JIMSS、RSI等国际期刊审稿人。
时 间：2023年4月6日9：00-11：00
地 点：航空楼A817
邀请人：航空学院青年教师发展中心 周生喜教授
