摘要
针对油液混合动力工程机械能量损失较大、能量回收效率偏低以及控制策略相对单一等问题,从混合动力系统液压原理和控制策略2个方面分析.将油液混合动力工程机械液压系统分为泵控液压系统、二次调节液压系统和复合结构液压系统3种形式,研究液压系统的设计思路和工作原理,将油液混合动力工程机械控制策略分为门限值控制策略、模糊控制策略和优化控制策略3类,分析适用工况,对比油电混合动力汽车控制策略与油液混合动力工程机械控制策略.油液混合动力工程机械的发展方向包括利用泵控系统代替阀控系统、开发储能元件、设计针对工程机械结构特点的控制策略以及控制目标多样化.
The latest research results were reviewed aiming at the problem of hydraulic hybrid engineering machinery,such as the huge loss of energy,low energy recovery efficiency,simple control strategy and so on.The organized research results could be divided into two parts（i）hydraulic principle design and（ii）control strategy selection,respectively.In the hydraulic principle design,three development directions were proposed,which consisted of pump control system,secondary regulation system and composite structure hydraulic system.The mentalities of the designing were studied,and the operating principles were analyzed.In the control strategy selection,three kinds of control strategies were summarized,including threshold control strategy,fuzzy logic control strategy and optimization based control strategy.The working conditions were analyzed.Compare the control strategies of hybrid electric vehicles with those of hydraulic hybrid machineries.According to the above,the development directions of hydraulic hybrid machinery were proposed,such as using pump control system to replace valve control system,developing new components to reduce the energy loss,designing specific control strategy and diversifying the control goal.
出处
《浙江大学学报（工学版）》
EI
CAS
CSCD
北大核心
2016年第3期449-459,共11页
Journal of Zhejiang University：Engineering Science
基金
浙江省重点科技创新团队自主设计项目(2013TD01)
关键词
混合动力
液压系统
工程机械
控制策略
hybrid power
hydraulic system
engineering machinery
control strategy
