亚洲一区欧美在线,日韩欧美视频免费观看,色戒的三场床戏分别是在几段,欧美日韩国产在线人成

旋轉(zhuǎn)噴頭變壓節(jié)能供水變域噴灑控制策略與試驗(yàn)
作者:
作者單位:

作者簡(jiǎn)介:

通訊作者:

中圖分類(lèi)號(hào):

基金項(xiàng)目:


Variable Range of Precision Spraying of Lawn Sprinkler for Control Strategy by Variable Pressure Technology
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 圖/表
  • |
  • 訪問(wèn)統(tǒng)計(jì)
  • |
  • 參考文獻(xiàn)
  • |
  • 相似文獻(xiàn)
  • |
  • 引證文獻(xiàn)
  • |
  • 資源附件
  • |
  • 文章評(píng)論
    摘要:

    針對(duì)目前變域噴灑噴頭能耗高,噴灑形狀不理想等問(wèn)題,通過(guò)深入分析水泵變壓運(yùn)行和噴頭變域噴灑機(jī)理,〖JP2〗得到了噴頭實(shí)現(xiàn)變域噴灑時(shí)兩種調(diào)節(jié)方法的運(yùn)行規(guī)律。推導(dǎo)了變頻器頻率fv與噴頭旋轉(zhuǎn)α角度所用時(shí)間t之間的關(guān)系方程,提出了一種實(shí)現(xiàn)噴頭變域噴灑的開(kāi)環(huán)控制策略和通過(guò)試驗(yàn)設(shè)定控制規(guī)律的方法。通過(guò)水力能耗的計(jì)算發(fā)現(xiàn),采用變頻調(diào)速方法實(shí)現(xiàn)變域噴灑比采用動(dòng)靜片方法節(jié)約27%的能量。

    Abstract:

    There are several factors influence the range of complete fluidic sprinkler. They are inlet press, sprinkler elevation, sectional area, rotate speed, step frequency, pipe length, signal junction depth and so on. Experimental studies of these factors were carried out respectively, the regularity of range influencing factors was found. The inlet press and sectional area were direct proportion to the range of the sprinkler, rotate speed and step frequency were inverse proportion to the range of the sprinkler, pipe length and signal junction depth were lessinfluence the range of the sprinkler. Orthogonal array of five factors and four levels were selected to carry out the experiment. The dates were analyzed by the method of synthesis point rating. The graduations of range influencing factors were achieved after the orthogonal experiments. They were inlet press, sprinkler elevation, sectional area, signal junction depth, pipe length in sequence. The results showed that compared with active static slice method, varible frequency speed control could save energy by 27%.

    參考文獻(xiàn)
    相似文獻(xiàn)
    引證文獻(xiàn)
引用本文

湯 躍,駱 寅,袁壽其,劉俊萍.旋轉(zhuǎn)噴頭變壓節(jié)能供水變域噴灑控制策略與試驗(yàn)[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2010,41(12):93-98. Tang Yue, Luo Yin, Yuan Shouqi, Liu Junping. Variable Range of Precision Spraying of Lawn Sprinkler for Control Strategy by Variable Pressure Technology[J]. Transactions of the Chinese Society for Agricultural Machinery,2010,41(12):93-98.

復(fù)制
分享
文章指標(biāo)
  • 點(diǎn)擊次數(shù):
  • 下載次數(shù):
  • HTML閱讀次數(shù):
  • 引用次數(shù):
歷史
  • 收稿日期:
  • 最后修改日期:
  • 錄用日期:
  • 在線發(fā)布日期:
  • 出版日期:
文章二維碼