【作者】 卢天日；

【导师】 许宏光；

【作者基本信息】 哈尔滨工业大学 ， 机械电子工程， 2009， 硕士

【摘要】 土木工程结构振动控制的研究与应用经过半个世纪的发展已日臻成熟,并已有多种振动控制装置逐步在实际工程中得到推广应用。但缺少结构简单、性能良好的被动控制装置;传统的主动质量驱动装置体积大、造价高、系统复杂、能源利用率低等问题也日益突出。直驱式容积控制电液伺服技术是机电液一体化新技术,它具有交流伺服电动机控制灵活和液压系统出力大的双重优点,结构简单、节能高效,控制灵活,利于环保。该系统被公认为液压控制领域极具前途且非常重要的发展方向之一,具有重要的理论意义和实用价值。本文针对传统阀控主动质量驱动系统存在的固有缺点,将具有显著技术优势的直驱式电液伺服系统应用于土木工程结构振动控制上,用于高层建筑的抗风防振减灾。本文的主要内容如下:1.在查阅大量相关文献的基础上,本文综述了国内外直驱式电液伺服系统的研究情况,对比分析了该系统的原理和特点。2.进行了整套系统的设计,包括直驱式油源部分(即液压包)、双出杆液压缸、位置反馈装置、质量负载及导轨部分,其中针对油源部分的无动力补油方案的吸排阀集成块和密闭压力油罐在结构上做了优化。3.建立了变频器及交流异步伺服电机系统、泵控缸系统的以及整个直驱式系统的模型,设计了PID控制器,并进行了系统仿真分析。4.最后,搭建了实验台,采用C++ Builder可视化程序语言编写了实验控制程序,进行了系统的开、闭环以及有无载荷实验,检验系统的动态性能,并对实验结果进行了分析。通过对直驱式电液伺服主动质量驱动系统进行实验研究,验证了所建数学模型的正确性以及直驱式系统频率响应较低的固有局限,为进一步改善系统的动态特性提供了理论基础和实验依据。结果表明,将直驱式电液伺服系统应用于土木工程结构振动主动控制上是可行的。更多还原

【Abstract】 After half a century of development, the research and application of structural vibration control of civil engineering has matured, and a wide range of vibration control devices have gradually been used in practical engineering application. However, the lack of passive control devices of simple structure, good performance and the problems of traditional active mass driver devices of bulky volume, high cost, system complexity, and low energy efficiency have become increasingly prominent.Direct Drive Volume Control (DDVC) electro-hydraulic servo system is a new type of electro-hydraulic system combined with mechanism, electron-hydraulics. It takes advantages of both AC servo motor’s flexibility of control and hydraulic system’s great output force. It has lots of advantages, such as simple structure, energy saving, efficient, and control flexible, beneficial to the environment. The system is recognized as one of the very promising and important development directions of hydraulic control field, which has important theoretical value and practical application value.In this paper, in view of the inherent shortcomings of traditional valve controlled active mass driver system, DDVC electro-hydraulic servo system is tried to be applied to vibration control of civil engineering structures, which will be set on top of the high buildings to prevent from the disaster caused of the strong wind and earthquake. The main studies of this dissertation are as follows:1. Through consulting lots of relevant references, the research status in domestic and international of DDVC system is summarized in this paper, and the principle of the system and its characteristics are comparatively analyzed.2. The structural design of the system is carried out, including the oil source (that is, the hydraulic package) of DDVC system, asymmetric hydraulic cylinder, position feedback devices, the mass load and guide parts. Especially, the structure of oil supplement valve block and closed pressure oil tank in oil supplement program without power of oil source is improved.3. The mathematical model of inverter and the AC asynchronous servo motor system, pump controlled cylinder system, and the whole DDVC system are built up, a PID controller is designed, and the simulation analysis of the system is made.4. Finally, the experimental test-bed is built up, the experimental control procedure is programmed using the C++ Builder visual programming language, then experiments are carried out under open-loop and closed-loop with or without load, the dynamic performances of the system is tested, and the experimental results are analyzed.Through the experimental research of DDVC electro-hydraulic servo active mass driver system, the correctness of the mathematical model of the system, as well as DDVC system’s inherent low frequency response limitation are verified. It provides a theoretical basis and experimental evidence for further improve of the system’s dynamic characteristics. The results show that the DDVC electro-hydraulic servo system applied to civil engineering structure vibration active control is feasible.更多还原