基于模型预测的PHEV模式切换协调控制  

Mode Switching Coordinated Control for PHEV Based on Model Predictive Control

作　　者：苏攀攀 付主木[1,2] 宋书中[1,2] 陶发展 SU Pan-pan;FU Zhu-mu;SONG Shu-zhong;TAO Fa-zhan(College Information Engineering,Henan University of Science and Technology,Luoyang Henan 471023,China;Henan Key Laboratory of Robot and Intelligent Systems,Henan University of Science and Technology,Luoyang Henan 471023,China)

机构地区：[1]河南科技大学大学信息工程学院,河南洛阳471023 [2]河南科技大学河南省机器人与智能系统重点实验室,河南洛阳471023

出　　处：《计算机仿真》2020年第1期109-116,共8页Computer Simulation

基　　金：国家自然科学基金(61473115);河南省高校科技创新团队支持计划(18IRTSTHN011)。

摘　　要：针对混合动力汽车在模式切换过程中,由于离合器的结合/分离易产生较大冲击度和滑磨功,提出一种模型预测切换协调控制方法。在进行动力学分析基础上,建立预测模型。以电机驱动下的速度响应作为目标转速,构造目标函数,考虑其非可行解问题、动力部件物理约束以及最大冲击度限制要求,引入松弛因子,设计状态约束条件,保证其解的可行性与切换平顺性,实现较小冲击度与滑磨功。同时,引入预测误差,对预测值进行反馈校正,以提高控制精度;将所提策略转化为在线二次规划问题,便于计算机实现。仿真验证结果表明,所提协调控制策略与传统策略相比,冲击度与滑磨功明显降低,保证了切换平顺性,提高了驾驶性能。During the mode switching of hybrid electric vehicle,the jerk and frictional work are too large.In this article,a method of switching coordinative control based on model predictive was put forward.Firstly,a prediction model was established based on the dynamic analysis.Secondly,the speed response driven by the motor was adopted as the target speed,and then the objective function was constructed.Moreover,the relaxation factor was introduced considering the infeasible solution,the physical constraints of dynamic components and the maximum impact limit.In addition,the state constraints were designed to ensure the feasibility of its solution and the switching smoothness,and thus achieving the smaller jerk and frictional work.Meanwhile,the prediction error was introduced and the prediction value was corrected by feedback for improving control accuracy.Finally,the proposed strategy was transformed into an online quadratic programming problem which was easy to be realized on a computer.Simulation results show that compared with the traditional control method,the jerk and friction work of proposed coordinated control strategy is ob-viously decreased,so that the switching smoothness is guaranteed and the driving performance is improved.

关 键 词：并联式混合动力汽车 模式切换 模型预测控制 冲击度 滑磨功 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] U469.72[自动化与计算机技术—控制科学与工程]