负载切换过程液压系统的能耗特征研究

Research on Energy Consumption Characteristics of the Load Switching Process in the Hydraulic System

由于液压系统存在着频繁的负载切换,容易产生额外的能量消耗。为了探究动态负载快速切换过程中系统额外能量损耗的变化规律及影响因素,建立了液压系统负载切换的Simulink-AMESim联合仿真模型,将整个系统的能量消耗反映在电机输入端的电能进行研究,得到了不同工况负载的切换过程中系统的额外能耗的影响因素。其中负载差对整个系统的额外能量消耗影响最大,切换后的负载对额外能量损耗占切换过程中的整个能量消耗的比例大小影响最大。该结果为实现在负载频繁切换环境下液压系统的节能降耗提供了参考。

Because of the frequent load switching in hydraulic system,additional energy consumption is easily generated. In order to explore the change rule and influencing factors of extra energy loss during fast switching of dynamic load. A Simulink-AMESim joint simulation model of hydraulic system load switching is established,the energy consumption of the whole system is reflected in the electric energy input of the motor,the influencing factors of the additional energy consumption of the system during the switching process under different load conditions are obtained,in which the load difference on the entire system of the greatest impact of the additional energy consumption,the load after switch is the maximum influence factor for the proportion that additional energy loss accounts for the proportion of total energy consumption during the switching process. The results can provide reference for the energy saving and consumption reduction of the hydraulic system in the environment of frequent load switching.