【作者】 孟悦；

【导师】 弓永军；

【作者基本信息】 大连海事大学 ， 机械电子工程， 2011， 硕士

【摘要】 随着能源危机、环境污染以及生态破坏等问题越来越受到各国的广泛关注,我国也开始不遗余力地发展以风力发电为代表的新能源产业。大型风力发电机用轴承是大型风力发电设备中的重要组成部件,同时,其设计、制造、检测技术也是我国自主研发制造的风力发电设备向大型化、高功率、集群化发展所要攻克的关键技术与难点。因此,加强对大型风电轴承测试技术的研究、积累大型风力发电机用轴承试验台的设计制造经验、建立成熟的大型风电轴承测试理论体系对我国风力发电行业的发展十分重要。本文基于现有的风力发电轴承及其检测技术,针对1.5至3兆瓦以上的大型风力发电机用轴承测试平台的液压加载系统及控制策略、监测及数据采集系统和基于虚拟仪器的用户界面进行了研究与设计。本文首先针对风力发电行业现状以及国内外发展形势进行了综述,介绍风电轴承测试平台的发展以及国内外已研制成功的测试平台,明确课题研究内容及目标。接着分析了测试对象,即偏航轴承的结构特点、工作条件以及失效方式,确定试验台对被测轴承加载的载荷种类以及载荷大小,进而提出几种液压加载系统方案,并选择其中的一种进行系统参数设计及计算。探讨了本试验台液压加载系统的控制策略,进行了操控系统的方案设计。继而对试验台需要采集的各个参量以及需要监测的各类数据进行了归纳与计算,据此对数据采集系统的硬件进行了选型配置。随后依照Lab VIEW程序开发流程,对试验台用户界面进行了需求分析、算法设计、模块划分以及程序编写。最后通过仿真以及单通道小系统试验对所编制的软件进行了运行测试。本课题对大型风电轴承试验台液压加载方案及控制策略进行了深入研究,在labvIEW8.2的环境下对大型风电轴承试验台加载监测及数据采集系统的用户界面及软件部分进行了设计,为风电轴承测试系统的设计与搭建提供了可参考的资料。更多还原

【Abstract】 With the energy crisis, environmental pollution and ecological destruction is increasingly subject to national attention, China make efforts to develop new energy industry such as wind power. Large-scale wind power bearing is one of important component parts of large-scale wind power generation equipment. And the design, manufacture, testing technology is key techniques and difficulties to overcome in the development of domestic wind power industry. Therefore, it is very important to strengthen domestic large-scale wind power bearing testing techniques, to accumulate experience of design and manufacturing large-scale wind power bearing test bed, and also to establish a mature theory system of large-scale wind power bearing test. This paper analyzed hydraulic loading system of large-scale wind power bearing test bed and designed data acquisition system and user monitor interfaces of the testing bed.Both domestic and international development of wind power industry is reviewed. The development of wind power bearing test bed is summarized. Content and objectives of this paper are cleared. Then characteristic of yaw bearing, the test object, is analyzed. Target of the loading system is raised and several formula of hydraulic loading system are proposed One of the designs is selected and the parameters of it are calculated. The control strategy of hydraulic loading system is designed. Types of data that should be monitored and acquired are then summarized. Hardware of the Data Acquisition System is selected. Then target of user interface of the test bed is analized, algorithm of the interface program is designed, module of the program is divided. The program is written, tested and simulated in LabVIEW afterwards.In this paper, hydraulic loading system and its control strategies of large-scale wind power bearing test bed is studied. Monitoring and data acquisition system of the test bed is designed. Program of user interface of the test bed is written in labvIEW8.2.This paper can provide valuable reference information for the design and manufacturing of large-scale wind power bearing test bed.更多还原