The paper investigates asymmetries effects over a nonlinear vibration energy harvester dynamics. The asymmetric system performance is compared with symmetric ones. Different asymmetry levels on restoring force and gravity action are investigated from a system-sloping angle variation. Bifurcation diagrams and basins of attraction are used to examine the local and global characteristics underlying dynamical systems under different excitation energy. The results show the adverse effects of asymmetries on system dynamics. They also reveal ways to overcome them by canceling asymmetric influence from optimal sloping angle values and improving asymmetric system performance over symmetrical ones. This comprehensive numerical study provides novel valuable insights into asymmetrical energy harvester dynamics, a wide and still less explored topic.

翻译：本文研究了非线性振动能量采集器中非对称性对其动力学特性的影响。将非对称系统的性能与对称系统进行了比较，通过改变系统倾斜角度，探讨了恢复力与重力作用在不同非对称水平下的表现。利用分岔图和吸引域分析了不同激励能量下动力系统的局部与全局特征。结果表明，非对称性对系统动力学存在不利影响。同时，本文揭示了通过优化倾斜角度消除非对称性影响、提升非对称系统性能甚至使其超越对称系统的途径。这项全面的数值研究为非对称能量采集器动力学这一广阔且尚待深入探索的领域提供了新颖且重要的见解。