碰撞过程中存在的颤振粘滑驱动
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摘要
在碰撞系统中会出现颤振而引发的粘滑现象,通过设计具有一定弹刚性的结构件,建立单自由度碰撞模型,并引入Duffing单边碰撞系统的颤振分析,通过提取系统的结构参数,利用Simulink进行动力学仿真。通过力传感器、米依激光测位移传感器对结构件进行碰撞实验。测试碰撞的全过程,得到刚性件在碰撞过程中可以转化为稳定的输出位移,实验中滑块在1Hz冲击力频率下可以得到0.03mm/s的稳定位移输出,可以将碰撞视为一种可以有效利用的驱动方式。
The stick-slip phenomenon caused by flutter in the collision system is studied in this paper.A single-degreeof-freedom collision model is established by designing structural parts with certain elastic rigidity in this paper.The flutter analysis of Duffing single-side collision system is introduced.The structural parameters of the system are extracted and the dynamic simulation is carried out by using Simulink.The collision experiment of structural parts is carried out by force sensor and Mie laser displacement sensor.By testing the whole process of collision,the rigid parts can be transformed into stable output displacement in the collision process.In the experiment,the slider can get stable output displacement of 0.03 mm/s at 1 Hz impact frequency.The collision can be regarded as an effective driving mode.
The stick-slip phenomenon caused by flutter in the collision system is studied in this paper.A single-degreeof-freedom collision model is established by designing structural parts with certain elastic rigidity in this paper.The flutter analysis of Duffing single-side collision system is introduced.The structural parameters of the system are extracted and the dynamic simulation is carried out by using Simulink.The collision experiment of structural parts is carried out by force sensor and Mie laser displacement sensor.By testing the whole process of collision,the rigid parts can be transformed into stable output displacement in the collision process.In the experiment,the slider can get stable output displacement of 0.03 mm/s at 1 Hz impact frequency.The collision can be regarded as an effective driving mode.
引文
[1]王检耀,洪嘉振,刘铸永.接触碰撞动力学的多变量选取方法[J].力学学报,2014,1(2):318-322
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[5]沈麒,胡颢.结构碰撞研究[J].工程抗震与加固改造,2014,36(1):67-79
[6]李宗伟.基于惯性粘滑驱动的跨尺度精密运动平台研究[D].苏州:苏州大学,2016:17-24,28-32
[7]Canudas de Wit C,Olsson H,Astr觟m KJ,et al.Commens on A new model for control of systems with friction[J].IEEE Transactions on Automatic Control, 1995, 40(3):419-425
[8]向红标,谭文斌,李醒飞,等.基于LuGre模型的自适应摩擦补偿[J].机械工程学报,2012,48(17):70-74
[9]晏芳,邓小伟,余征跃,等.基于二维高速摄影系统的面内碰撞实验研究[J].冲击与振动,2016,35(24):84-87
[2]PEREIRA C,RAMALHO A,AMBROSIO J.An enhanced cylindrical contact force model[J].Multibody System Dynamics,2015,35(2):277-298
[3]Budd C.The dynamics of impact oscillators[D].Bristol:University of Bristol,1992
[4]冯进钤,徐伟,牛玉俊.Duffing单边碰撞系统的颤振分岔[J].物理学报,2010(1):157-163
[5]沈麒,胡颢.结构碰撞研究[J].工程抗震与加固改造,2014,36(1):67-79
[6]李宗伟.基于惯性粘滑驱动的跨尺度精密运动平台研究[D].苏州:苏州大学,2016:17-24,28-32
[7]Canudas de Wit C,Olsson H,Astr觟m KJ,et al.Commens on A new model for control of systems with friction[J].IEEE Transactions on Automatic Control, 1995, 40(3):419-425
[8]向红标,谭文斌,李醒飞,等.基于LuGre模型的自适应摩擦补偿[J].机械工程学报,2012,48(17):70-74
[9]晏芳,邓小伟,余征跃,等.基于二维高速摄影系统的面内碰撞实验研究[J].冲击与振动,2016,35(24):84-87