Torsional vibration active control of hybrid construction machinery complex shafting  

作　　者：胡琼 阳春华 刘少军 郑皓 

机构地区：[1]College of Mechanical and Electrical Engineering, Central South University [2]School of Information Science and Engineering, Central South University

出　　处：《Journal of Central South University》2014年第9期3498-3503,共6页中南大学学报（英文版）

基　　金：Project(51205415)supported by the National Natural Science Foundation of China;Project(14JJ3020)supported by the Natural Science Foundation of Hunan Province,China;Project(2013M542129)supported by China Postdoctoral Science Foundation;Project(2012QNZT014)supported by the Fundamental Research Funds for the Central Universities,China;Project supported by the Postdoctoral Foundation of Central South University,China

摘　　要：Due to the coaxial connection of engine, motor and pump, the dynamic characteristics of hybrid construction machinery are changed, which generates a new torsional vibration problem of multi-power sources. To reduce the torsional vibration of the hybrid construction machinery complex shafting, torsional vibration active control was proposed. The three-mass model of coaxial shafting of hybrid construction machinery was established. The PID control and the fuzzy sliding mode control were chosen to weaken torsional vibration by controlling the motor speed and torque. The simulation results show that the fuzzy sliding mode control has 12% overshoot of the PID control when the engine torque changes. The active control is effective and can realize smooth power switch.Due to the coaxial connection of engine, motor and pump, the dynamic characteristics of hybrid construction machinery are changed, which generates a new torsional vibration problem of multi-power sources. To reduce the torsional vibration of the hybrid construction machinery complex shafting, torsional vibration active control was proposed. The three-mass model of coaxial shafting of hybrid construction machinery was established. The PID control and the fuzzy sliding mode control were chosen to weaken torsional vibration by controlling the motor speed and torque. The simulation results show that the fuzzy sliding mode control has 12% overshoot of the PID control when the engine torque changes. The active control is effective and can realize smooth power switch.

关 键 词：torsional vibration active control hybrid construction machinery electro-mechanical coupling fuzzy sliding modecontrol 

分 类 号：TH133.2[机械工程—机械制造及自动化] TH113.1