非线性模型预测直接转矩和ASR/ABS控制的电动汽车纵向稳定性
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  • 英文篇名:Longitudinal Stability of Electric Vehicle Based on Nonlinear Model Prediction of Direct Torque and ASR/ABS Control
  • 作者:马薇 ; 施继红
  • 英文作者:MA Wei;SHI Ji-hong;Humanities and Information College,Changchun University of Technology;Jilin Agricultural University;
  • 关键词:电动汽车 ; 非线性模型预测 ; 直接转矩控制 ; ASR/ABS ; 模糊控制
  • 英文关键词:electric vehicle;;nonlinear model prediction;;direct torque control;;ASR/ABS;;fuzzy control
  • 中文刊名:KXJS
  • 英文刊名:Science Technology and Engineering
  • 机构:长春工业大学人文信息学院;吉林农业大学;
  • 出版日期:2019-07-18
  • 出版单位:科学技术与工程
  • 年:2019
  • 期:v.19;No.489
  • 基金:吉林农业大学科研启动基金(201302);; 吉林省教育厅十一五科技项目(2011319)资助
  • 语种:中文;
  • 页:KXJS201920052
  • 页数:6
  • CN:20
  • ISSN:11-4688/T
  • 分类号:362-367
摘要
为了解决电动汽车在加速和制动过程中容易发生滑移和抖动、不能满足稳定性和舒适性的要求,提出了一种基于主从式非线性模型预测(nonlinear model prediction,NMP)直接转矩控制(direct torque controt,DTC)的电动汽车鲁棒控制策略。采用双电机-单控制器主从式驱动模型,基于模糊逻辑控制器,在线确定权重因子的精确值,生成优化电动汽车驱动决策的最优切换状态,保证电机速度的精确跟踪。结合NMP-DTC电机控制方法,设计了一种模糊逻辑ASR/ABS控制器,以角加速度变化和滑移率变化为输入,以补偿转矩为输出变量,根据道路特性的变化提供补偿转矩,保证电动汽车行驶在最佳滑移率范围内,提高行驶的稳定性。基于MATLAB/Simulink进行变负载转矩电机跟踪和汽车纵向稳定性仿真,与参考速度进行对比分析。结果表明,所提出的主从式NMP-DTC的电动汽车ASR/ABS控制,在变负载下不仅电机跟踪轨迹误差降低,而且可保证在加速和制动过程中车辆的纵向稳定性控制。
        In order to solve the slip and vibration of electric vehicle during acceleration and braking process,which cannot satisfy stability and comfort requirements,a robust control method based on Master-Slave nonlinear model prediction (NMP) direct torque control (DTC) was proposed. Based on the master-slave driving model of dual motor-single controller,the fuzzy logic controller was designed. The exact value of weight factor was determined online,which could generate optimal switching state of driving decision,ensuring the accurate tracking of motor speed. Combining with NMP-DTC motor control method,a fuzzy logic ASR/ABS controller was designed,which took angular acceleration change and slip rate change as input,compensation torque as output variable. The compensation torque was provided according to the change of road characteristics,which made the electric vehicle run within the optimal slip rate range. The simulation of variable load torque motor tracking and vehicle longitudinal stability was carried out based on MATLAB/Simulink,and the results were compared with the reference speed. The results show that the ASR/ABS control of the proposed master-slave NMP-DTC not only reduces the tracking error of the motor under variable load,but also ensures the vehicle longitudinal stability control during acceleration and braking.
引文
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