重型AT主调压系统油压动态特性优化研究

为提高重型液力自动变速器的主调压系统油压动态特性,在对重型液力自动变速器主调压系统回路中的主调压阀与控制压力调节阀工作原理分析的基础上,建立其数学模型,并基于AMESim搭建主调压系统仿真模型,从主调压阀阀芯直径d_(m3)、控制压力调节阀弹簧刚度K_(c)和控制压力调节阀遮盖量ul_(c)展开主调压系统的油压动态特性分析。采用粒子群优化算法和遗传算法,对影响主调压系统油压特性的阀体结构参数进行优化设计。优化结果表明,优化后的设计参数能有效提高重型液力自动变速器的油压特性,验证了所建立主调压系统模型的正确性和所运用优化算法的有效性。

装载机变速器液压系统分析

变速器液压系统对于变速器的性能有着重要影响。分析某装载机变速器的液压系统,包括主油压调压系统、换挡离合器,利用AMESim液压仿真软件建立了主油压调压系统、换挡离合器及整个液压系统控制模型,仿真结果表明该系统能够满足压力要求。并针对变速器液压系统分析了离合器结合、分离时序对换挡的影响,从而找到最佳的离合器结合、分离时序。

The Applications of High-voltage variable frequency speed regulation System in Main Exhauster of Sintering

Main Exhauster is one of the main equipment of sintering production. It needs to consume a lot of electricity. Therefore, the system＇ s reconstruction for energy-saving will effectively reduce electricity for the production. The paper takes an iron and steel enterprise that had successfully transformed the synchronous motors of main exhauster of sintering as an example, which describes the application of high-voltage variable frequency speed regulation system in main exhauster of Sintering, so as to provide a reference for other iron and steel enterprises.