液压混合动力中机液联合制动能再生机理及协调控制研究

项目名称： 液压混合动力中机液联合制动能再生机理及协调控制研究

项目编号： No.51205099

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 机械工程学科

项目作者： 许明

作者单位： 杭州电子科技大学

项目金额： 25万元

中文摘要： 针对传统液压混合动力中液压蓄能器比能量小的不足，提出基于飞轮储能与液压蓄能器储能为一体的机液联合储能方法及构造形式，结合两种储能方式的优点，将能有效提高传统液压混合动力储能单元的比能量；液压蓄能器储能子系统采用比例阀控蓄能器，按照制动能回收及再利用需求进行调节，并吸收由负载扰动等引起的流体脉动，提高液压混合动力的驾驶性能；针对机液混合动力中的流量、压力耦合特性，提出基于分层控制理论的三级协调控制方法，改善机液混合动力的控制特性；研究机液混合的参数匹配特性，得到影响制动能再生效率的主要特征参数，进行多学科动态优化；针对外界扰动及参数摄动，研究机液混合的扰动抑制鲁棒控制方法；项目研究成果将有望改善传统液压混合动力储能装置的弊端，做到比能量与比功率兼顾，而且有望提高制动能回收与再利用的效率，为液压混合动力在中重型车辆及工程机械上的应用做基础性工作。

中文关键词： 液压混合动力；蓄能器；飞轮；模型；参数匹配

英文摘要： Aiming at the disadvantage of less specific energy of the hydraulic accumulator in conventional hydrostatic hybrid transmission, a novel hydraulic energy-saving system for hydrostatic drives using flywheel and hydraulic accumulator as energy storage systems is proposed. The novel energy storage combined with the advantages of both flywheel and hydraulic accumulator. The specific energy of the system is higher than that of the hydraulic hybrid system using hdraulic accumulator, which is important for mobile applications. The subsystem of hydraulic accumulator energy storage uses the proportional valve to control the hydraulic accumulator, so the valve can adjust the energy recovery&reuse process in accordance with the load acquirement. In addition, the valve can absorb the high-frequency pulsating flow, and improve the driving performance of the hydraulic hybrid. Aiming at the flow-pressure coupling characteristics, the three-layer coordinate-control method based on hierarchical control theory is proposed to improve the control performance of the hydromechanical hybrid system. According to the study of parameters matching charteristics, the main feature parameters about the energy regeneration efficiency can be deduced and optimatized. For external disturbance and parameter perturbation, the robust control strate

英文关键词： hydraulic hybrid system；accumulator；flywheel；model；parameter matching