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無級變速器速比控制閥動態(tài)性能仿真與優(yōu)
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Performance Simulation and Optimization of Speed Ratio Control Valve in Continuously Variable Transmission
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    摘要:

    提出了一種基于改進(jìn)粒子群優(yōu)化算法的無級變速器速比控制閥動態(tài)性能優(yōu)化方法,。首先通過機理分析的方法建立了速比控制閥的動態(tài)模型,；然后根據(jù)無級變速器速比控制閥的使用要求，在考慮響應(yīng)時間、超調(diào)量及節(jié)能等指標(biāo)的基礎(chǔ)上,，確立了一個綜合的優(yōu)化目標(biāo)函數(shù)；最后根據(jù)確立的目標(biāo)函數(shù),，結(jié)合仿真模型,，通過改進(jìn)的粒子群優(yōu)化算法對速比控制閥的結(jié)構(gòu)參數(shù)進(jìn)行了優(yōu)化。試驗結(jié)果表明經(jīng)過優(yōu)化的速比控制閥各項動態(tài)性能指標(biāo)均優(yōu)于原型閥,，其中壓力上升時間縮短了100ms,超調(diào)量下降了0.05MPa,更適用于無級變速器,。

    Abstract:

    A method for dynamic performance optimization of continuously variable transmission speed ratio control valve based on improved particle swarm optimization algorithm is presented. First at all, a dynamic model was set up by means of mechanism analysis to predict the valve dynamic performance. Then, an objective function for optimization was established considering dynamic performance indices of speed ratio control valve such as response time, overshoot and saving energy based on its operating requirements. Finally, the optimization problem was solved by using an improved particle swarm optimization algorithm with necessary constraints. The properties of the optimized valve were compared with the prototype workpiece, and the results indicated that the dynamic performance indices of the optimized valve were much better than those of the prototype workpiece.

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劉金剛,譚援強,徐惠余,陳建文.無級變速器速比控制閥動態(tài)性能仿真與優(yōu)[J].農(nóng)業(yè)機械學(xué)報,2010,41(3):6-10. Performance Simulation and Optimization of Speed Ratio Control Valve in Continuously Variable Transmission[J]. Transactions of the Chinese Society for Agricultural Machinery,2010,41(3):6-10.

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