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Abstract：
Compression systems based electromechanical actuators require a good understanding of their dynamics for a better performance. This paper deals with the study of the nonlinear dynamics of an electromechanical system with two rotating arms subjected to a sinusoidal excitation for fluid compression purposes. The physical model integrating two balloons to be compressed by the arms alternately is presented and the mathematical equations traducing their dynamics are established. We emphasize on the influence of some control parameters namely the supply voltage, the discontinuity position and the viscoelastic ratio on the behaviour of the angular displacement of the arms. The study is also done by neglecting the inductance in the electrical part of the system. It is obtained that while the arms exhibit periodic motion during regular movement, compression of the balloons induces a shift to multi-periodic or chaotic dynamics, occasionally reverting to periodicity. Experimental and numerical simulation results demonstrate good agreement, with the R-system approximating more experimental outcomes than the RL-system. These findings hold significant implications for various environmental applications utilizing pump technology.
摘要：
基于机电致动器的压缩系统需要对其动力学有很好的理解以获得更好的性能。本文研究了具有两个旋转臂的机电系统的非线性动力学，该系统受到正弦激励以进行流体压缩。提出了将两个气球交替压缩的物理模型，并建立了对其动力学进行转换的数学方程。我们强调一些控制参数的影响，即电源电压，不连续位置和粘弹性比对臂角位移行为的影响。该研究还通过忽略系统电气部分中的电感来完成。可以得出，尽管手臂在规则运动期间表现出周期性运动，气球的压缩会导致向多周期或混沌动力学的转变，偶尔恢复到周期性。实验结果与数值模拟结果吻合良好,R系统比RL系统更接近实验结果。这些发现对利用泵技术的各种环境应用具有重要意义。
