MOTOROLA MCP750-1252A 233MHZ PC750 32BIT L2 1MB CACHE 128MB ECC DRAM, 5MB FLASH小,度25;時為滿量程的0.3%,抗干擾能力強。3.2數字速度鏈PLC軟件設計根據造紙機各分部的輥徑、烘缸直徑和各傳動點減速機的減速比,可算出各分部在同線速度時電動機的轉速,如果是采用變頻器驅動時,忽略各電機的轉差率,可進步算出其所需頻率。
各傳動點減速機減速比/電動機頻率,Hz D各傳動點及烘缸直徑,m P電動機數如某紙機為6個分部傳動點,交流變頻調速,電動機為4電機,高車速300以min低車速80m/min電動機轉速n及頻率/計算如表.表各分部線速度與電動機轉速及頻率的關系分部數驅網輥2―壓下輥3二壓下輥6卷紙設定所有分部變頻器給定0V時,變頻器輸出頻率均為60Hz,應大D/A數字量為4000,那么,于總車速驅網輥分部的大數字量就應為3775,小數字量為006.從表可見,在同車速時,電機轉速壓下輥是驅網輥的90%,而二壓下輥又是壓下輥的94%,按分部傳動造紙機的工藝要求,后分部的微調量為前分部的*5%即可。

這樣,壓下輥于驅網輥的大線速比為0.9x.05=0.945,小線速比為0.9x0.95=0.855,二壓下輥壓下輥大線速比為根據這算法, CODAD后傳動裝置的配置和評估優化曾凡明敖晨陽2陳國鈞東東(.海工程大學動力工程學院,湖北武漢430033;2.海裝備論證研究中心艦船所,北京0084)的各個標分類研究,采用模糊數學的方法定性指標量化采用層次分析法(AHP)定權重。后,應用線性加權和函數法將多目標化成單!目標,得到綜合性能評價函數,根據綜合性能評價函數的大小定佳方案。
全柴并車裝置是由兩臺或多臺柴油機通過離合器、并車齒輪箱共同驅動同螺旋槳的主推進裝置,主要由并車齒輪箱、彈性聯軸器、萬向聯軸器、離合器(液力偶合器)等傳動元件組合而成,其主要完成的功能是傳遞功率、隔離或改善扭轉振動,補償發動機端和軸系之間因變形、振動、安裝誤差、熱膨脹引起的位移,尤其是當主機采取隔振措施后,傳動系統必須滿足大位移變形的要求。近年來,這種傳動方式的主推進裝置越來越多地在艦船中得到應用。本文全柴并車傳動方案進行分析,并應用現代數學中多目標決策理論進行定量綜合評估。
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