In this paper, to finely accommodate large-range wave frequencies on same sea areas, a spring resonance mechanism is created to facilitate maximal power tracking control of a direct-drive wave energy converter (DWEC) that is expected to be equipped on same sea areas, whereby the spring-resonance-assisted module is devised by mover-coaxial springs and reshapes the resonant-frequency pertaining to a specific spectrum. By virtue of modeling the spring-resonance-assisted DWEC system, a finite-time disturbance observer (FDO) is deployed to rapidly compensate environmental disturbances. Accordingly, the FDO-based integral sliding-mode (ISM) control framework is proposed, to accurately achieve the resonance between the DWEC buoy and wave, thereby contributing to spring-resonance-assisted maximal power tracking control (SR-MPTC) of the DWEC. Simulation studies and comprehensive comparisons demonstrate that the proposed SR-MPTC scheme performs remarkably fast adaptation and accurately maximal power tracking in the presence of disturbances and spring resonance assistance.

在本文中，为了更好地适应同一海域的大范围波浪频率，创建弹簧共振机制以促进预计将配备在同一海域的直接驱动波浪能转换器（DWEC）的最大功率跟踪控制，其中弹簧共振辅助模块由动子同轴弹簧设计，并重塑与特定频谱有关的共振频率。通过对弹簧共振辅助 DWEC 系统进行建模，部署了有限时间扰动观测器 (FDO) 以快速补偿环境扰动。因此，提出了基于FDO的积分滑模（ISM）控制框架，以准确实现DWEC浮标与波浪之间的共振，从而有助于DWEC的弹簧共振辅助最大功率跟踪控制（SR-MPTC） .