脉冲激励下单摆运动轨迹解耦方法试验

Experimental study on decoupling method of the pendulum trajectory after impulse excitation

对脉冲激励下单摆运动轨迹的解耦方法进行了初步探讨.该方法通过摄像头获取单摆在脉冲力作用后的运动轨迹,通过拟合分析,从复杂运动中解耦出反应脉冲影响的强迫摆动轨迹,以及不受脉冲影响的弱阻尼自由摆动轨迹,并找到了表征脉冲大小的特征向量,从而实现了脉冲激励下单摆运动轨迹的解耦,为复杂状态下单摆运动的解耦分析奠定了基础.

This paper discusses decoupling method of the pendulumtrajectory after impulse excitation.Theauthoruses a camera to obtain simple pendulum trajectory after impulse excitation,by fitting analysis,decouples out the forced swing trajectory from the complex motion trajectory,and the free swing trajectory in weak damping,which is not affected by impulse,and find out the characteristic vector which can represent the impulse,thus realize the decoupling of the pendulum trajectory after impulse excitation,which will lay a foundation for the decoupling of the pendulum trajectory under complex condition.