FORCE COMPUTER SYS68K/CPU-40B/4-01 68040 25Mhz CPU, 4MB SHARED DRAM, ON-BD BATTE根據前面所述的定性指標與定量指標的價值量化結果,設評價模型中25個指標的隸屬度為E=(ei,e,2,…,e25)(i=,2…,k;表示共有k個待評價的方案),各指標相總體目標的權重為w,-=)的大化問題,根據U(x)值的大小進行方案系統的總排序和擇優,即:U(x)就是選定的佳方案。



3實例分析3.計算結果根據上述方法前述3類共8個方案進行綜合評估分析,得到結果如表表各方案綜合性能指標計算結果方案方案2方案3方案4方案5方案6方案7方案8綜合性能A表23類方案中各自佳方案的性能比較性能指標方案4方案5方案6說明適應性方案5差動力性能差別不大機動性方案4差隱蔽性差別不大可靠性方案4差維修性方案4差經濟性方案4差生命力差別不大技術風險方案4優3.2結果分析從總體上講,方案6的綜合性能指標的評估值是0.707 6是所有8個方案中優的。為了具體分析各方案的各項指標優劣情況,比較8個方案的各項指標的量化值可知,方案6的各項技術指標比較平均,沒有明顯的弱項,因此,其綜合性能指標就優越!鲃酉2.2.液力變矩器單單相三元件液力變矩器,使推土機輸出扭矩的大小能自動適應載荷的變化,發動機進行過載保護,超負荷運行時發動機不熄火。
2.2.2行星變速器行星齒輪式動力換擋變速器,前進、后退各三擋,方向與速度的切換均通過控制閥來接合或分離箱內的五排摩擦片式離合器來實現,減少了換擋時間,提尚了變速效率。
2.2.3中央傳動和轉向離合器中央傳動為螺旋錐齒輪。轉向離合器為濕式、多片、彈簧壓緊、液壓分離。變速器的動力經中央傳動分為左右兩路,再通過左、右轉向離合器傳至終傳動。
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