flapper nozzle 中文意思是什麼
flapper nozzle
解釋
擋板噴嘴-
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。 -
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。 -
But sometimes self - excited oscillations and noise may appear in hydraulic flapper - nozzle servo - valve if its construction is not selected very correctly. if self - excited oscillations and noise appear in hydraulic servo - valve, the performance of hydraulic control systems may lose stability
因它具有非常快的響應速度，所以是目前應用最廣泛的伺服閥，但它也存在自激現象，容易產生自激噪聲和振蕩，嚴重影響伺服控制系統的穩定性。 -
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。 -
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。
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