波浪能论文：波浪能 波浪压电发电装置 初级换能 次级换能 直线压电发电机

波浪能论文：波浪能 波浪压电发电装置 初级换能 次级换能 直线压电发电机 【关键词】波浪能 波浪压电发电装置 初级换能 次级换能 直线压电发电机 【英文关键词】Wave energy Wave piezoelectric power generation Primary transducer Secondary transducer Linear piezoelectric generator 波浪能论文:一种波浪压电发电装置的研究 【中文摘要】近年来,海洋无线传感器节点应用越来越广泛,但传感器节点电源主要是传统电池。现有传统电池使用寿命短、须定期更换或充电,难以满足传感网络节点长寿命稳定供电要求;人们开始研究利用环境能量发电技术,将其转化为电能并存储,为无线传感器供电。风能、太阳能容易受天气影响,利用波浪能发电的电源可就地取能,不受天气影响。研究波浪能发电技术为海洋无线传感器节点供电具有重要意义。本文设计了一种点吸收式阻尼板—浮子波浪压电发电装置;建立了波能初级换能结构的物理模型,仿真结果 表 关于同志近三年现实表现材料材料类招标技术评分表图表与交易pdf视力表打印pdf用图表说话 pdf 明在波浪作用下,初级换能结构中阻尼板与浮子产生幅值为0.075m的相对运动;制作了波能换能装置样机,在实际海域进行实验得出,波浪作用下,样机中阻尼板与浮子产生了最大幅值约为0.05m的相对运动,验证了波能初级换能结构 方案 气瓶 现场处置方案 .pdf气瓶 现场处置方案 .doc见习基地管理方案.doc关于群访事件的化解方案建筑工地扬尘治理专项方案下载 的可行性,为后续波能次级换能结构的研究提供了参考。对波能次级换能结构进行了理论研究,仿真结果表明激励磁铁与压电悬臂梁磁铁的磁极平行或垂直配置下,周期性永磁力冲击能 够实现将超低频的波浪运动转化为压电悬臂梁高频振动,提高压电悬 臂梁的振动响应频率。最后,本文设计并搭建了直线压电发电机实验 装置,主要是为了模拟波能次级换能结构并进行实验测试,实验平台 主要包括步进电机控制系统、滑块行程为?0.075m的对心曲柄滑块 机构以及压电悬臂梁等。单一或阵列两个激励磁铁的运动行程为? 0.075m,以0.5Hz的频率冲击压电悬臂梁的发电实验表明:两种磁铁 磁极配置下,非接触—永磁冲击能够实现将超低频的波浪运动转化为 压电悬臂梁的高频振动,实验结果与仿真结果相符,验证了非接触永 磁冲击增频转换原理。 【英文摘要】In recent years, the demand for ocean wireless sensor nodes has been spreading speedily. The sensors nodes are usually designed to run on traditional battery. As the traditional battery are limited in capacity and have to be replaced or charged constantly, they are unable to meet the sensor nodes, which require the long life and stable batteries. People start to research the generation technology of environment energy. The ambient energy can be converted and stored up to provide power for the wireless sensor nodes. Solar energy or wind energy can be affected easily by weather. The wave energy converters can extract wave energy, and can not be affected by weather. The study of the wave energy harvesting technology is provided with general significance for the ocean wireless sensor nodes.A novel point-absorber wave energy piezoelectric generator has been designed with a damping plate. The mathematic model of the wave energy primary transducer was established. Simulation result shows that the relative displacement of0.075m is generated between the float and the drag board. A wave primary transducer was made and tested in the actual ocean wave environment. Test result shows the relative displacement of0.05m is generated between the float and the drag board in the prototype. So the feasibility of wave energy primary transducer theory model and program was verified. The simulation and test results can give us a reference to study the secondary transducer in the future.The theory of the secondary transducer has been studied. The simulation result shows that as excitation magnet and the cantilever magnet pole was parallel or perpendicular, magnet impacting periodicity can convert the wave motion with super low frequency into high frequency vibration of the piezoelectric cantilever, and has improved the vibration frequency of the piezoelectric cantilever.Finally, The linear piezoelectric generator experimental device has been designed and set up to simulate the wave energy primary transducer. The device has consisted of the control system of the step-motor and the slider-crank mechanism with the stroke of0.15m and the piezoelectric cantilever. The stroke of the single or array double excitation magnets is?75mm, frequency is0.5Hz, the test of impacting the piezoelectric cantilever shows that non-contact impacting can convert the wave motion with super low frequency into high-frequency vibration of the piezoelectric cantilever with configuration of the two magnet poles, The experimental results are consistent with the numerical results, and has verified the non-contact increased frequency conversion principle with the permanent magnet impact. 【目录】一种波浪压电发电装置的研究 摘要 5-6 Abstract 6-7 1 绪论 10-16 1.1 研究背景 与意义 10-11 1.2 波能初级转换技术的发展现状 11-13 1.2.1 振荡水柱技术 11-12 1.2.2 筏式技术 12 1.2.3 点吸收式技术 12-13 1.3 波能次级转换技术 的发展现状 13-15 1.3.1 直线发电机技术 13-14 1.3.2 压电发电技术 14-15 1.4 本文主要工作 15-16 2 波浪 压电发电装置设计 16-19 2.1 波浪压电发电装置结构设计 16-17 2.2 波浪压电发电装置工作过程 17-18 2.3 本 章 小结 学校三防设施建设情况幼儿园教研工作小结高血压知识讲座小结防范电信网络诈骗宣传幼儿园师德小结 18-19 3 波能初级换能特性分析 19-26 3.1 物理模型 19-22 3.1.1 浮漂体波浪力 19-21 3.1.2 阻尼板波浪力 21 3.1.3 物理模型 21-22 3.2 数值仿真 22-23 3.3 样机试验 23-25 3.4 本章小结 25-26 4 波浪能次级换能特性分析 26-43 4.1 引言 26-29 4.2 非接触冲击压电发电机 29-42 4.2.1 理论模型 30-36 4.2.2 数值仿真 36-42 4.3 本章小结 42-43 5 直线压电发电机性能测试 43-56 5.1 设计背景 43 5.2 实验系统硬件设计 43-48 5.2.1 装置机械结构 43-47 5.2.2 硬件控制系统 47-48 5.3 实验系统软件设计 48-49 5.4 直线压电发电机实验 49-55 5.4.1 单磁铁激励 50-53 5.4.2 阵列两磁铁激励 53-55 5.5 本章小结 55-56 6 结论与工作展望 56-58 6.1 结论 56 6.2 工作展望 56-58 参考文献 58-61 攻读硕士学位期间发表学术论文情况 61-62 致谢 62-63