车辆电动静液压自供能量式主动悬架工作机理与协调控制研究

项目名称： 车辆电动静液压自供能量式主动悬架工作机理与协调控制研究

项目编号： No.51275403

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 机械、仪表工业

项目作者： 寇发荣

作者单位： 西安科技大学

项目金额： 82万元

中文摘要： 车辆主动悬架在获得良好减振性能的同时，却消耗了大量能量。本研究提出基于EHA（Electro-Hydrostatic Actuator）电动静液压作动器的车辆自供能量式主动悬架结构。在建立馈能悬架综合性能评价体系和EHA主动悬架模型的基础上，对EHA主动悬架的减振性能与馈能效果进行协调性优化；对较低馈能电压进行泵升，采用复合蓄能装置，解决低速时无法充电的问题，提高悬架馈能效率；在对EHA主动悬架能量流动分析的基础上，采用分层协调控制策略，对EHA主动悬架主动模式、馈能模式、半主动模式进行协调切换控制，根据悬架能量平衡条件，实现EHA主动悬架的能量自供给；采用鲁棒控制策略和Smith 预估补偿策略，有效减小控制时滞对EHA主动悬架的影响。在对EHA主动悬架进行台架试验和实车道路试验研究的基础上，研制出集成化、实用化的EHA主动悬架样机，为车辆减振性能与能量消耗之间的矛盾问题解决提供新的途径。

中文关键词： 电动静液压作动器 ；振动能量回收；自供能量；主动悬架；协调控制

英文摘要： Vehicle active suspension gets a good vibration isolation performance, but it consumes a lot of energy.In this study, self-powered active suspension with Electro-Hydrostatic Actuator (EHA) is put forward. According to the regenerative braking principle of direct current motor,energy regeneration and regenerative braking are realized and recovered energy is used to produce an active control force again.The comprehensive performance evaluation system of energy-regenerative suspension is established by using analytic hierarchy process and entropy value method.In addition,the structure of EHA active suspension is simplified and dynamics models of EHA active suspension are built. The coordinated analysis for suspension dynamic performance and energy-regenerative effect is carried out and the parameters of EHA active suspension are optimized by MATLAB tools. To increase the energy reclaiming efficiency of EHA active suspension, super capacitor and battery are adopted simultaneously and lower energy regenerative voltage is pumped by the boost chopper circuit with Pulse-Width Modulation.Through the analysis of energy flow, layered coordination control strategies are employed to switch the different control modes of EHA active suspension,which refer to energy regeneration mode, regenerative braking mode and drive mode. U

英文关键词： electro-hydrostatic actuator ；vibrational energy regeneration；self powered；active suspension；coordinated control