閥擋 的英文怎麼說
中文拼音 [fádǎng]
閥擋
英文
ale grid-
Hydraulic flapper - nozzle servo - valve is the most important component in hydraulic control systems. it is used very widely in industrial and aerospace application fields because of its high responding speed
噴嘴擋板伺服閥作為伺服控制元件，是閉環電液伺服控制系統中最重要的核心元件。In order to improve the reliability of servo system, a triplex electro - hydraulic servo actuator system with three torque motors, three jet flapper valves and three sets of feedback components is designed
摘要為了提高伺服作動系統的可靠性，設計了一種三餘度的電液伺服作動系統，將伺服閥的力矩馬達、噴嘴擋板閥、系統的反饋元件等做成一式三份。Therefore the output magnetic torque of torque motor can be increased. in this paper, mathematical model of hydraulic flapper - nozzle servo - valve is introduced. the mathematical model of magnetic fluid is built according to the reference introduction
本文給出了噴嘴擋板伺服閥的數學模型，對作用於伺服閥力矩馬達的磁流體數學模型進行了推導，給出了添加磁流體的噴嘴擋板伺服閥的數學模型。Electrical signals are sent to the hydraulic valves by the microcomputer when a gear change is required by the powertrain control strategy.
當按照動力裝置控制方案要求換擋時，電信號由微計算機送到液壓閥。Standard features include : 3 ” waste outlet valve, left side service, 2 ” fresh water outlet valve, sight glasses, hose bracket, strap tie - down brackets, bumper hitch, rear mud - flaps, wand holster, unique baffle design, keyed locking cabinets
標準系統包括: 3 "大小排污口閥，左邊服務系統， 2 "大小清水閥、視鏡、軟管支架、捷牽制下拉支架、防撞緩沖器、後方泥瓣、棒皮套、獨特設計擋板、可鎖壁櫃。2 access to fixture valves in the fume hood wall shall be through exterior removable access panels, gasketed access panels on the inside liner walls, or through removable front posts
安裝通風櫃內閥門管道可以通過3種方式：外層可拆除的側擋板、內部密封的視窗擋板、和可拆除的前面板。However, by comparison with flap nozzle servo valve which has been used widely and popularly by now, the torque motor of jet pipe servo valve has a larger rotary inertia. this causes low natural frequency of servo valve, and thus the response speed of jet pipe servo valve is slow. moreover, the jet pipe of servo valve has large flexibility, and it is easy to excite oscillations and noise in the valve, which is named self - excited oscillations and noise
然而與目前普遍使用的噴嘴擋板伺服閥相比，射流管伺服閥的銜鐵組件轉動慣量大，導致力矩馬達部分固有頻率低，從而響應速度慢，此外，射流管供油管柔性大，容易產生自激現象，這些缺點都使得射流管伺服閥的動態特性差，從而影響了它的工作性能。If necessary, the stem and stem seal may be removed from the bonnet by removing the retainer ring and handle and screwing the stem out the under - side of the bonnet
如果必要的話，閥桿和閥桿密封可能要從閥帽上拆卸下來，要在閥帽的下方先拆卸擋圈和手柄，以及閥座上的螺絲。It will exert resistance and damping force to the torque motor armature, so that the dynamic performance, especially the stability, of flapper - nozzle servo - valve can be improved. the self - excited oscillations and noise can be removed. at the same time, as magnetic fluid has a higher magnetic permeability, the efficiency of torque motor magnetic circuit can be improved
由於磁流體具有的較大磁導率和較大的磁化強度，把磁流體添加到伺服閥力矩馬達的工作氣隙中，可提高伺服閥力矩馬達的磁迴路效率，增加伺服閥的阻尼，從而改善噴嘴擋板伺服閥的動態特性，抑制及消除其自激振蕩和噪聲。Rdlvd rdlv dual
雙倒擋延遲閥Experiments are carried out to test the dynamic response of the servo - valve with or without magnetic fluid and the force characteristics on torque
最後對磁流體作用力特性以及添加磁流體和不添加磁流體的噴嘴擋板伺服閥的動態特性進行了實驗研究。When magnetic fluid is filled into the working gaps of servo - valve torque motor between the armature and cores, it shows a higher saturation magnetization because of the working of the magnetic field inside the gaps
因此，本文提出了採用磁流體改善伺服閥性能的方法，著重研究了磁流體添加到力矩馬達工作間隙后，對噴嘴擋板伺服閥動態性能的影響。And the mathematical model of hydraulic flapper - nozzle servo - valve with magnetic fluid is derived. the dynamic performance and characteristics of hydraulic flapper - nozzle servo - valve are simulated using matlab / simulink. the dynamic responses in time domain and frequency domain are given and compared when magnetic fluid is used or not in the servo - valve
採用matlab / simulink對添加磁流體不添加磁流體的噴嘴擋板伺服閥的動態進行了模擬研究，給出了伺服閥頻域及時域響應特性，比較得出磁流體在改善噴嘴擋板伺服閥動態特性方面的作用，進一步研究了磁流體各參數對伺服閥動態特性的影響。分享友人