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1)  strate-layer flow box
层流式流浆箱
2)  pressurized headbox
气垫式流浆箱
1.
Since the decouping exists in the routine control of pressurized headbox , a internal model control based on RBF neural network is proposed in this paper, and in detail introduced the design rules and the choice of essential model of this control system.
针对气垫式流浆箱常规控制中存在的耦合问题,提出了一种基于RBF(径向基)神经网络的内模控制系统(IMC),并详细介绍了该控制系统的设计规则及关键模型的选择。
2.
Since the decoupling exists between pressure and level of the headbox in the routine control of pressurized headbox,in analyzing the traditional decoupling control system,a internal model control based on RBF neural network is proposed in this paper,considering the RBFNNC as system model and controller,the decoupling between pressure and level of the headbox disappeared.
针对气垫式流浆箱常规控制中总压和浆位之间存在严重耦合的问题,在分析传统解耦控制方案的基础上,提出了一种基于RBF(径向基)神经网络的内模控制系统(IMC),采用径向基神经网络控制器(RBFNNC)在流浆箱控制中既充当对象模型,又充当控制器,实现了总压和浆位的解耦控制。
3.
This paper introduced the control parameters,methods,strategies and the problems that the strategies had of the pressurized headbox,put forward one kind of neural network internal model control on the basis of radial basis function neural network, and theoretically discussed the feasibility of this designing.
介绍了气垫式流浆箱的控制参数、控制方法、控制方案以及其中存在的问题 ,提出了一种基于径向基函数 (RBF)网络辨识与控制的神经网络内模控制 (NNIMC) ,从理论上探讨了此方案的可行性。
3)  air-cushioned headbox
气垫式流浆箱
1.
A complete level control scheme for air-cushioned headbox
气垫式流浆箱浆位完整控制方案
2.
After introducing the development of headbox briefly,some effective control strategies are proposed and several advanced decoupling control algorithms are also presented mainly for air-cushioned headbox and hydraulic headbox.
以纸机车速为主线,简要介绍了流浆箱的发展状况;并针对气垫式流浆箱和水力式流浆箱,给出了行之有效的流浆箱控制方案和几种先进的解耦控制算法。
3.
An effective solution for air-cushioned headbox control is proposed,and a low-cost remote fault diagnosis system is also given based on the control strategy depicted in this paper.
提出了一种行之有效的气垫式流浆箱控制系统解决方案,并在此基础上,给出了一种低成本的故障远程诊断系统,详细阐述了故障诊断的基本原理和远程诊断系统的实现方法。
4)  hydraulic headbox
水力式流浆箱
1.
A study on simulation of turbulence generator in hydraulic headbox
对水力式流浆箱湍流发生器的仿真研究
2.
After introducing the development of headbox briefly,some effective control strategies are proposed and several advanced decoupling control algorithms are also presented mainly for air-cushioned headbox and hydraulic headbox.
以纸机车速为主线,简要介绍了流浆箱的发展状况;并针对气垫式流浆箱和水力式流浆箱,给出了行之有效的流浆箱控制方案和几种先进的解耦控制算法。
3.
A detailed analysis and comparison is done on the performance of the different kind of headbox such as open headbox,air-cushioned headbox,hydraulic and semi-hydraulic headbox.
作者在文中概述了流浆箱的作用和性能要求,对敞开式流浆箱、气垫式流浆箱、水力式和半水力式流浆箱的性能进行了详尽的分析和比较,最后阐明了流浆箱的发展趋势。
5)  open headbox
敞开式流浆箱
1.
A detailed analysis and comparison is done on the performance of the different kind of headbox such as open headbox,air-cushioned headbox,hydraulic and semi-hydraulic headbox.
作者在文中概述了流浆箱的作用和性能要求,对敞开式流浆箱、气垫式流浆箱、水力式和半水力式流浆箱的性能进行了详尽的分析和比较,最后阐明了流浆箱的发展趋势。
6)  semi-hydraulic headbox
半水力式流浆箱
1.
A detailed analysis and comparison is done on the performance of the different kind of headbox such as open headbox,air-cushioned headbox,hydraulic and semi-hydraulic headbox.
作者在文中概述了流浆箱的作用和性能要求,对敞开式流浆箱、气垫式流浆箱、水力式和半水力式流浆箱的性能进行了详尽的分析和比较,最后阐明了流浆箱的发展趋势。
补充资料:气垫
      在航行器底面与运行表面(地面或水表面)之间制造一个高于大气压1%~5%(即100~500千克力/米2,1千克力=9.80665牛顿)的空气层,使得航行器脱离或部分脱离运行表面,这层被增压的空气层称为"气垫"。
  
  按照气垫的形成和维持方法,气垫可分为周边射流式和增压室式两种。周边射流式气垫(图1)是用风扇驱动空气进入气道,由周边的喷口喷出并拐折向外,形成射流式气幕,使内侧压力高于外侧压力,将航行器抬升起来。气幕依靠射流的动量变化对气垫起封闭作用。被封闭的气垫的压力大小同气幕喷射的速度、垫升高度和喷射角度有关。增压室式气垫(图2)是在航行器和运行表面之间构成一个较大的气室(增压室),空气经风扇驱动,进入气室,在底部周围泄出,气流流过气室后受到阻滞,空气由动压头转化为静压头,产生增压效应。气垫压力的大小同空气流量、垫升高度有关。
  
  应用气垫的垫升原理可制造气垫搬运平台、气垫船和气垫火车等。柔性围裙装在喷口的出口处,将使垫升功率大幅度地下降,为实用化打开了广阔的前景。例如柔性围裙在气垫船上的应用,使气垫船从试验研究阶段过渡到工程实用阶段。各种围裙的应用,使喷口形式发生很大变化,原来无围裙的那种喷口形式先为"火腿"式围裙所代替(图3),继而又逐渐地发展为环-节式围裙和囊指式围裙(图4、图5)。囊指式围裙中的几何参数,如囊指深度比、裙高与裙宽之比、喷口面积比、喷口位置等等亦因需要而异。后来又出现其他形式的围裙,如筒形增压室围裙(图6),周边筒形围裙(图7)等等。
  
  
  
  对于气垫的流量、压力、垫升高度以及有关几何参数的计算,称为垫升特性的计算。描述垫升特性的理论较多,也发表了很多的试验资料。对于增压室式气垫,应用较广的是增压室理论。对于周边射流式气垫,应用较广的是薄喷口理论和指数理论。关于围裙问题,发展了沿壁射流理论。囊指式围裙出现后,中国已建立起一套囊指式围裙的垫升特性的计算公式和不平衡射流理论。
  
  目前,对垫升性能的研究趋向是进一步降低相对垫升高度,以节省能源,并且考虑采用低囊压比和低阻围裙型式。此外,还着重于研究整个垫升供气系统的特性对航行器性能的影响。对气垫船而言,由于气垫、围裙的联合作用,气垫船的耐波性和兴波特性远较一般船舶复杂。气垫船的兴波特性会涉及船的浸湿面积、气垫体积和泄流高度的变化,因而对阻力和耐波性均有影响。
  
  

参考书目
   G. H. Elsley and A. J. Devereux, HovercraftDesign and Construction, Cornell Maritime Press,Cambridge,Maryland,1968.
   H. R. Chaplin, Theory of the Annular Jet inProximity to the Ground, DTMB Report 1373,July1957.
   R.S. Jones, Some Design Problems of Hovercraft,Aerospace Engineering,Feb.1961.
   A.A.West, On the Performance of the Hovercraft Single Wall Skirt, Aeronautical Quarterly, Nov.1967.
  

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