液压挖掘机分阶段功率匹配控制技术  

Stage-based power matching control of hydraulic excavator

作　　者：高宇[1] 冯培恩[1] 彭贝[1] 邱清盈[1] GAO Yu FENG Peien PENG Bei QIU Qingying(Institute of Mechanical Design, Zhejiang University, Hangzhou 310027, China)

机构地区：[1]浙江大学机械设计研究所,浙江杭州310027

出　　处：《哈尔滨工程大学学报》2017年第9期1461-1469,共9页Journal of Harbin Engineering University

基　　金：国家科技支撑计划项目(2013BAF07B04)

摘　　要：为了降低液压挖掘机作业过程中的能量消耗,根据挖掘机作业循环阶段及作业对象的不同,合理设定发动机工作点,提出基于最大加速度的工作点切换控制策略,实现发动机工作点的快速切换。通过制定转矩反馈与转速反馈协同控制的策略,保证挖掘机相同工作阶段发动机工作点的稳定。搭建相应的试验台,验证了所提出的控制策略的可行性。挖掘机实际作业试验结果显示,采用上述控制策略,使发动机稳定工作在最佳工作点,在提升作业效率的同时有效降低了能耗。To reduce fuel consumption in hydraulic excavators, we set reasonable engine operation points according to different operation cycle stages and objects. On this basis, we propose an operation-point switching control strategy based on the maximum acceleration required to realize fast switching between the different engine operation points. The stability of these operation points at the same operational stage is ensured by a collaborative control strategy of torque feedback and speed feedback. To verify the feasibility of our proposed strategy, we built a test bed and conducted experiments on an actual excavator. Our experimental results demonstrate that our proposed strategy can maintain the stability of the engine operation at the best operation points, which can reduce fuel consumption while increasing operational efficiency.

关 键 词：液压挖掘机 节能 分阶段功率匹配 作业循环 发动机工作点 转速反馈控制 转矩反馈控制 模糊控制 

分 类 号：TU621[建筑科学—建筑技术科学]