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金屬帶—行星齒輪無級變速器動力學研究
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國家自然科學基金項目(51175419)、陜西省教育廳專項科研計劃項目(16JK1898)和榆林學院高層次人才科研啟動基金項目(11GK48)


Dynamic Characteristic of Metal Pushing Belt—Planetary Gear Continuously Variable Transmission
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    摘要:

    提出了一種金屬帶—行星齒輪無級變速器,,能夠擴大無級變速調(diào)速范圍,同時兼顧傳動效率,。選取XP型順時針環(huán)流型單環(huán)路系統(tǒng),,設計了金屬帶—行星齒輪無級變速器,,通過無級變速和順時針環(huán)流的模式切換,,允許調(diào)速范圍為0.5~3,,循環(huán)功率小于系統(tǒng)輸入功率的33%,對比了金屬帶和XP型順時針環(huán)流型無級變速器效率特性,,通過模式切換,,該金屬帶—行星齒輪無級變速器能夠有效優(yōu)化傳動效率。以Matlab/Simulink為平臺建立整車仿真模型,,選取UDDS循環(huán)工況,,采用最佳燃油經(jīng)濟性控制策略,對金屬帶—行星齒輪無級變速器進行仿真,。仿真結果表明:在整個UDDS循環(huán)工況下, 金屬帶—行星齒輪無級變速器在低速大轉(zhuǎn)矩時,,工作于順時針環(huán)流模式,,高速時,工作于無級變速模式,,能夠兼顧變速范圍和傳動效率,。同時,,模式切換時,流過無級變速支路的功率流方向不變,,有效避免了系統(tǒng)振動,。

    Abstract:

    A metal pushing belt—planetary gear continuously variable transmission (CVT) was presented. It permitted to enlarge the ratio spread of the CVT and simultaneously ensured a better transmission efficiency. The XP type single loop system with a clockwise power circulation was selected. A metal pushing belt—planetary gear CVT was designed. Its transmission ratio was ranged from 0.5 to 3, the circulation power was less than 33% of the system input power. The metal pushing belt CVT and the XP type with clockwise power circulation CVT efficiency characteristics were contrasted. Through mode switching, the metal pushing belt—planetary gear CVT could effectively optimize the transmission efficiency. Taking Matlab/Simulink as a platform, the simulation model of the vehicle was established. Given UDDS driving cycles, using the best fuel economy control strategy for the engine, the simulation results showed that throughout UDDS driving cycle,at low speed and high torque, the operating mode was the clockwise power circulation pattern;at high speed, the operating mode was CVT pattern, the metal pushing belt—planetary gear CVT can reconcile transmission ratio range and transmission efficiency. During mode switch, the power flow direction of the continuously variable branch was invariable, which effectively prevented the system vibration.

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王振,崔亞輝,劉凱,徐琳.金屬帶—行星齒輪無級變速器動力學研究[J].農(nóng)業(yè)機械學報,2016,47(12):391-397,,384. Wang Zhen, Cui Yahui, Liu Kai, Xu Lin. Dynamic Characteristic of Metal Pushing Belt—Planetary Gear Continuously Variable Transmission[J]. Transactions of the Chinese Society for Agricultural Machinery,2016,47(12):391-397,,384.

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  • 收稿日期:2016-05-11
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  • 在線發(fā)布日期: 2016-12-10
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