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Adaptive Shape Control for Thermal Deformation of Membrane Mirror with In-plane PVDF Actuators

Chinese Journal of Mechanical Engineering 2018年第1期31卷 187-197页

作者： Yi-Fan Lu Hong-Hao Yue Zong-Quan Deng horn-sen tzou School of Mechatronics Engineering Harbin Institute of Technology College of Aerospace Engineering Nanjing University of Aeronautics and Astronautics

Optical membrane mirrors are promising key components for future space telescopes. Due to their ultra-thin and high flexible properties, the surfaces of these membrane mirrors are susceptible to temperature variations. Therefore adaptive shape control of the mirror is essential to maintain the surface precision and to ensure its working performance. However, researches on modeling and control of membrane mirrors under thermal loads are sparse in open literatures. A 0.2 m diameter scale model of a polyimide membrane mirror is developed in this study. Three Polyvinylidene fluoride(PVDF) patches are laminated on the non-reflective side of the membrane mirror to serve as in-plane actuators. A new mathematical model of the piezoelectric actuated membrane mirror in multiple fields,(i.e., thermal,mechanical, and electrical field) is established, with which dynamic and static behaviors of the mirror can be analyzed.A closed-loop membrane mirror shape control system is set up and a surface shape control method based on an influence function matrix of the mirror is then investigated. Several experiments including surface displacement tracking and thermal deformation alleviation are performed. The deviations range from 15 μm to 20 μm are eliminated within 0.1 s and the residual deformation is controlled to micron level, which demonstrates the effectiveness of the proposed membrane shape control strategy and shows a satisfactory real-time performance. The proposed research provides a technological support and instruction for shape control of optical membrane mirrors.

关键词： Adaptive shape control Membrane mirror Thermal deformation PVDF Influence function matrix

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2011年全国压电和声波理论及器件应用研讨会

作者： horn-sen tzou StrucTronics and Control Lab.Department of Engineering Mechanics School of Aeronautics and Astronautics Zhejiang UniversityHangzhou 310027

＜正＞The concept of breathing piezoelectric energy harvester（BPEH） is proposed and evaluated in this paper.A thin cylindrical shell is chosen as the substructure of energy *** on the Kirchhoff-Love thin shell theor... 详细信息

关键词： Cylindrical shell Electro-mechanical coupling Breathing mode Optimization

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Neural signals on adaptive paraboloidal cylindrical shells

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2011年全国压电和声波理论及器件应用研讨会

作者： horn-sen tzou StrucTronics and Control Lab.Department of Engineering Mechanics School of Aeronautics and Astronautics Zhejiang UniversityHangzhou 310027

＜正＞Paraboloidal cylindrical shells are commonly used as key components in communication antennas,space reflectors, solar collectors,*** sensing signals are essential for the active vibration control of engineering structures,this study focuses on analysis of distributed sensing signals on a flexible simply supported paraboloidal cylindrical shell

关键词： modal voltage signal mode shape infinitesimal neuron curvature effect membrane domination

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Size optimization of conical piezoelectric energy harvester

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2011年全国压电和声波理论及器件应用研讨会

作者： horn-sen tzou StrucTronics and Control Lab.Department of Engineering Mechanics School of Aeronautics and Astronautics Zhejiang UniversityHangzhou 310027China

＜正＞Shell-type piezoelectric energy harvesters show greater potentials in engineering *** research findings find that the resulting energy changes with respect to shell/patch length and width,when the piezoelectric ... 详细信息

关键词： Piezoelectric Energy harvesting Conical shell Optimization,Design

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Theoretical and experimental studies of an annular-plate energy harvester

Theoretical and experimental studies of an annular-plate ene...

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2011年全国压电和声波理论及器件应用研讨会

作者： horn-sen tzou StrucTronics and Control Lab.Department of Engineering Mechanics School of Aeronautics and Astronautics Zhejiang UniversityHangzhou 310027China

＜正＞Circular plates trend to vibrate with excitations and the vibrational energy can be transformed into the electric power by using piezoelectric *** study focuses on the energy harvesting of annular plates with ce... 详细信息

关键词： Piezoelectric Energy harvesting Experiment Circular plate

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Energy analysis of a piezoelectric patch laminated on cylindrical panels subjected to harmonic line loadings

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2011年全国压电和声波理论及器件应用研讨会

作者： horn-sen tzou StrucTronic Systems and Control Lab Department of Engineering MechanicsSchool of Aeronautics and AstronauticsZhejiang UniversityHangzhouZhejiang 310027

＜正＞According to the direct piezoelectric effect,electric energy can be generated in piezoelectric materials when subjected to external *** paper proposes an approximate method to calculate the energy generated in p... 详细信息

关键词： Line load Simply supported Electromechanical Optimal position

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Distributed sensing experiment of a conical shell with diagonal piezoelectric sensors

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2011年全国压电和声波理论及器件应用研讨会

作者： horn-sen tzou StrucTronics and Control Lab.Department of Engineering Mechanics School of Aeronautics and Astronautics Zhejiang UniversityHangzhou 310027China

＜正＞This paper reported the experimental research on the distributed vibration sensing of conical shells using diagonal piezoelectric *** piezoelectric sensor is a general description of the piezoelectric patch,such... 详细信息

关键词： Piezoelectric Energy harvesting Experiment Conical shell

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A tubular energy harvester with diagonal piezoelectric patch

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2011年全国压电和声波理论及器件应用研讨会

作者： horn-sen tzou StrucTronics and Control Lab.Department of Engineering Mechanics School of Aeronautics and Astronautics Zhejiang UniversityHangzhou 310027

＜正＞Shells are rarely used as substructures for energy harvester designs in recent *** this paper,a tubular cylindrical shell energy harvester laminated with a diagonal piezoelectric patch is designed and its energy... 详细信息

关键词： Integration by parts Breathing mode Signal cancelation Optimization

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Microscopic actuation and optimal actuator locations of paraboloidal cylindrical shells

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2011年全国压电和声波理论及器件应用研讨会

作者： horn-sen tzou StrucTronics and Control Lab.Department of Engineering Mechanics School of Aeronautics and Astronautics Zhejiang UniversityHangzhou 310027

＜正＞A number of engineering structures,e.g.,communication antennas,space mirrors,solar collectors,are designed based on paraboloidal cylindrical *** study is to investigate the distributed control effectiveness of s... 详细信息

关键词： modal control force shallow shell transverse vibration curvature effect membrane domination

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Electromechanical couping and energy harvesting of circular rings

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2011年全国压电和声波理论及器件应用研讨会

作者： horn-sen tzou StrucTronics and Control Lab.Department of Engineering Mechanics School of Aeronautics and Astronautics Zhejiang UniversityHangzhou 310027

＜正＞Ring shell structures,i.e.,gears,stiffeners,motors,structural sensors,etc.,often exhibits oscillatory behaviors during their *** is a crucial challenge to extract vibration energy,which is always wasted,and to convert to useful electric *** this study,the concept of energy harvesting based on a circular ring laminated with piezoelectric

关键词： vibration modal expansion modal frequency energy harvesting

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