Simulation Research on Fuzzy Shift Strategy of Automobile
-
摘要: 针对自动变速器模糊控制换挡过程中的换挡循环问题,设计了一种新的模糊控制策略.将实验得出的换挡规律曲线分解为升挡规律曲线和降挡规律曲线,并设计了2个相应的模糊控制器.提出以加速度的正负作为控制器起作用的控制参量——加速度为正时系统由升挡控制器控制,加速度为负或0时系统由降挡控制器控制,建立了仿真模型并实现了控制策略.为验证所设计的模糊换挡策略的正确性和可行性,进行了仿真.仿真结果表明,采用这种换挡策略,汽车即使在复杂的路况下行驶,仍然能有效地避免换挡循环,获得最佳的动力性和经济性.Abstract: In order to avoid shift cycle in the process of fuzzy control for automatic transmission shift,a new fuzzy control strategy was designed.A shift map obtained from an experiment was divided into an upshifting map and a downshifting map,and two corresponding fuzzy controllers,upshifting controller and downshifting controller,were designed.It was put forward that the controllers should work in the light of the acceleration,i.e.,the system is controlled by the upshifting controller when the acceleration is positive,and it is controlled by the downshifting controller when the acceleration is negative or zero.A simulation model was built to achieve the control strategy,and a simulation was carried out to validate the correctness and feasibility of the fuzzy shift strategy designed.The simulation result shows that an automobile with this shift strategy can effectively avoid shift cycle even if it is running in a complicated driving condition and this shift strategy can obtain the optimal power and economic performances.
-
Key words:
- fuzzy control /
- intelligent shift /
- shift cycle /
- shift schedule /
- simulation
-
孙肇花.基于凌志LS400型轿车动力传动一体化控制技术的研究[D].包头:内蒙古工业大学,2007.[2] 申水文,葛安林.模糊换档技术与综合换档规律[J].农业工程学报,1997,13(3):145-149.SHEN Shuiwen and GE Anlin.Fuzzy shift technology and integrated shift schedule[J].Transactions of the CSAE,1997,13(3):145-149.[3] 贾元华,周立元.自动变速器模糊换挡及其控制理论研究[J].农业装备与车辆工程,2005,173(4):33-36.JIA Yuanhua and ZHOU Liyuan.A research on fuzzy gear-shift and control.Theory of Automatic Mechanical Transmission[J].Shandong Agrieultural Machinery,2005,173(4):33-36.[4] 张泰,葛安林,郭立书.基于车辆负荷度的换挡规律研究[J].农业机械学报,2004,35(3):9-12.ZHANG Tai,GE Anlin,GUO Lish.Shift schedule based on vehicle loading[J].Transactions of The Chinese Society of Agricultural Machinery,2004,35(3):9-12.[5] 冯能莲,李克强,连小珉.液力机械传动车辆模糊换挡策略研究[J].农业机械学报,2003,34(5):19-23.FENG Nenglian,LI Kecliang,LIAN Xiaomin.Fuzzy control strategy of hydro-mechanical transmission of a vehicle[J].Transactions of The Chinese Society of Agricultural Machinery,2003,34(5):19-23.[6] 朱振宇.工程车辆自动变速智能控制系统试验研究[D].长春:吉林大学,2004:6-7.[7] 史维刚.汽车智能换挡系统的研究[D].长春:吉林大学,2001:20-21.[8] FRAJ A H,PFEIFFER F.Simulation of an automatic vehicle transmission as a meehatronie system[C] //Proceedings of the 6th UK Meehatronies Forum International Conference.Skovde:[s.n.] ,1998:85-90[9] KIM D H,YANG K J.Smooth shift control of auto-matic transmissions using a robust adaptive scheme with intelligent supervision[J].Int.J.of Vehicle Design,2003,32(3/4):250-272.[10] FRAJ A H,PFEIFFER F.Dynamic modeling and analysis of automatic transmissions[C] //Proceedings of the 1999 IEEE/ASME International Conference on Advanced Intelligent Meehatronics.Atlanta:[s.n.] ,1999:1 026-1 031[11] ALBERT Y,PRAMOD K.Design of computer experiments for open-loop control and robustness analysis of eluteh-to-elutch shifts in automatic Transmissions[C] //Proceedings of the American Control Conference.Albuquerque:[s.n.] ,1997:3 359-3 364.[12] MAC Ming,CHEN Ruiting.Computer simulation program of dynamic analysis for planetary transmission[C] //6th ASME International Power Transmission and Gearing Conference.Phoenix:[s.n.] ,1992:359-363[13] 易军,王学林,胡于进.复杂行驶工况下履带车辆自动变速器的模糊控制[J].兵工学报,2007,28(4):385-390.YI Jun,WANG Xuelin,HU Yujin.Fuzzy control of automatic transmission of tracked vehicle under the complicated running conditions[J].Acta Armamentarii,2007,28(4):385-390.
点击查看大图
计量
- 文章访问数: 1601
- HTML全文浏览量: 74
- PDF下载量: 412
- 被引次数: 0