动力风机风量调节集成式液压阀控伺服缸系统特性研究

  石家庄风机厂 石家庄风机 石家庄市风机厂 石家庄风机维修 石家庄风机销售
本文研究了一种新型集成式风机用机液伺服缸，通过操纵鼓风机的风筒转盘实现风机风量的调节。该文在对伺服缸结构分析的基础上，着重对控制系统特性进行了详细研究。适应全球装备制造业市场的一体化发展态势，创新型机械装备的研发和生产，是一个国家工业化科技水平提升的重要标志。创新型、集成式、高效率的现代机械装备，必将成为现代化工业的发展主流。因此，“中国制造”正面临着前所未有的挑战。
首先，本文详细分析研究了伺服缸的具体结构和工作机理。结构研究主要包括对旋转配油装置、集成式控制阀、集成式阀体、液压缸缸体及连接装置、密封支承导向和替换式阻尼装置等结构的分析；另外，结合伺服缸的结构特点，也对伺服缸以及旋转配油装置的工作机理进行了完整地论述；其次，基于工程流体力学、伺服缸物理模型以及古典控制理论，对集成式阀控差动缸系统进行了数学建模，并在系统数学模型的基础上，运用计算机仿真技术对控制系统的性能参数进行了全面的分析；最后，本文对替换式阻尼装置中阻尼孔通径和伺服阀口面积梯度等主要参数运用对比法进行了分析和优选，并讨论其对控制系统快速性、准确性、稳定性和动态位置刚度的影响，对以上参数的选取提供了重要的理论依据。
根据研究结果表明，本文研究的机液伺服缸体积小、重量轻、运行可靠，系统稳定性和快速性比较理想，并拥有良好的输出精度，能够满足风机工作要求，为引风机风量调节伺服机构的实验测试和最终产品的定型提供理论基础。 
 
关键词：风机，风量调节，集成式阀控缸，建模仿真，控制性能

The Research of the Characteristics of Fan Air Volume Adjusting Servo Hydraulic        

With the development of science and technology, modern machinery and  equipment is turning  towards  development  of  the  integrated  form  and  highly  effective  direction.  the country's latest five-year plan clearly pointed out how to create a new situation of scientific development, the rise of the equipment manufacturing industry is the important symbol of national comprehensive national strength promotion, new science and technology and the current  equipment  manufacturing  level  of  integration  is  bound  to  fly  in  the  quality  of people's production and  life style.  Our country independent research  and development of new equipment is also gradually playing an important role in the world. Thus, cooperation and communication between countries is increasing frequently, Made In China faced with unprecedented challenges.
In this paper, a new type of integrated hydraulic servo valve control hydraulic cylinder was designed with optimization method, which manipulates the ram turntable Angle of the blower,  so  as  to  realize  the  adjustment  of  the  fan  air  volume.  The  mechanism  has  less weight  and  smaller  size  ,  but  more  reliable  operation.  It  turned  out  to  satisfy  the requirement of the fan.
At  first,  This  article  introduces  the  hydraulic  servo  mechanism  of  concrete  structure, including control valve servo cylinder and the connecting device. At the same time, it does not only made detailed introductions to the selection of the hydraulic cylinder seal and the Settings  of  bearing  guide,  but  also  the  design  of  damping  hole;  Secondly,  The mathematial model of three-way valve controlled differential cylinder was established on the  basis  of  valve  linear  equation,  continuity  equation  and  force  balance  equation,  and which  was  used  for  analyzing  and  machine  performance  parameters  of  hydraulic  servo system;  At last,  computer  simulation  was  contributed  to  the  simulation  of  the  system,  in respectively from the time domain and frequency domain analysis of system performance. In  addition,  the  main  structure  parameters,  such  as  damper  orifice  diameter  and  the  area gradient  of  servo  valve  port  was  investigated,  and  the  influence  of  rapidity,  accuracy, stability and dynamic stiffness of the system was investigated.
According to the simulation results showed that it is the reasonable for the design of the machine  hydraulic  servo  hydraulic  cylinder.  System  stability  and  rapidity  are  ideal  and have more precise output. To sum up, the designed servo hydraulic cylinder is successful, and the research results can provide some theoretical foundation for the experimental test of fan air volume adjusting servo mechanism and finalizing the design.
 
Key  words：fan,  air  regulation  integrated,  valve-controlled  cylinder,  modeling  and simulation, control characteristic