基于非线性三步法的DCT两挡起步控制策略研究  

Research on the Launch Control Strategy of DCT Using Two-Speed Based on Nonlinear Triple-Step Method

作　　者：叶珂羽 刘振宇 唐立中 顾强 刘奇芳[3] Ye Keyu;Liu Zhenyu;Tang Lizhong;Gu Qiang;Liu Qifang(New Energy Development Institute,China FAW Co.,Ltd.,Changchun 130013;State Key Laboratory of Comprehensive Technology on Automobile Vibration,Noise and Safety Control,Changchun 130013;Department of Control Science and Engineering,Jilin University,Changchun 130025)

机构地区：[1]中国第一汽车股份有限公司新能源开发院,长春130013 [2]汽车振动噪声与安全控制综合技术国家重点实验室,长春130013 [3]吉林大学,控制科学与工程系,长春130025

出　　处：《汽车技术》2020年第10期39-44,共6页Automobile Technology

摘　　要：为实现双离合器自动变速器(DCT)的两挡联合起步,提出了一种应用非线性三步法跟踪期望起步车速曲线,并能实现两挡联合起步的控制策略。基于汽车动力学设计了由类稳态控制、参考动态前馈、误差反馈3个部分构成的控制器,并通过AMESim和Simulink联合仿真验证提出的控制策略的有效性,结果表明,应用该起步策略可实现起步车速跟踪,同时可平衡起步过程双离合器的滑摩,有效延长离合器总成寿命。To realize simultaneous launch of DCT,this paper proposes a control strategy that applies nonlinear triplestep method to track expected vehicle start speed curve,and realize simultaneous launch of two clutches.A controller is designed based on automobile dynamics that consists of 3 parts:quasi-steady state control,feedforward control based on reference dynamics and feedback control based on tracking error.AMESim and Simulink platform are used to verify effectiveness of the proposed launch strategy.Result shows that the control method can obtain good vehicle start speed tracking,and can balance the friction of two clutches,which can prolong life of the clutch assembly effectively.

关 键 词：两挡起步控制 双离合器自动变速器 轨迹跟踪 非线性控制 

分 类 号：U461.1[机械工程—车辆工程] O231.2[交通运输工程—载运工具运用工程]