CAJ | 학술논문

舰船振源设备由于其特殊环境转速经常发生浮动和变化，导致无法获得较为精确的参考信号。此时，前馈式振动主动控制算法性能严重下降。针对这类问题，在前馈式FXLMS（filter‐X least mean square）的主动控制算法的基础上，增加频率估计环节，进行参考信号反馈闭环生成，形成了2种反馈式的振动主动控制算法。对这2种反馈式振动主动控制算法进行了比较，通过仿真分析了这两种算法在参考信号精度不佳情况下的性能差异。研究分析和仿真结果表明，第二种振动主动控制算法计算代价小，而且在振源目标信号信噪比较高的条件下性能与第一种算法性能类似。
함선진원설비유우기특수배경전속경상발생부동화변화，도치무법획득교위정학적삼고신호。차시，전궤식진동주동공제산법성능엄중하강。침대저류문제，재전궤식FXLMS（filter‐X least mean square）적주동공제산법적기출상，증가빈솔고계배절，진행삼고신호반궤폐배생성，형성료2충반궤식적진동주동공제산법。대저2충반궤식진동주동공제산법진행료비교，통과방진분석료저량충산법재삼고신호정도불가정황하적성능차이。연구분석화방진결과표명，제이충진동주동공제산법계산대개소，이차재진원목표신호신조비교고적조건하성능여제일충산법성능유사。
T he unavailability of precise reference signal is commonly encountered in practical implemen‐tation of active vibration control due to the environment limitation of the w arship .In order to tackle this problem ,two algorithms is presented by adding a frequency estimation loop to update the refer‐ence signal based on the Feedforward filter‐x Least Mean Square algorithm (FXLMS) .The perform‐ance comparison of these two feedback algorithm is analyzed in the paper .The property of the algo‐rithms is presented by the simulations .It is derived that the computational requirements of the second algorithm is much less than the first algorithm ,although it presents a little performance degradation . Also ,the second have similar performance compared to the first algorithm w hen the signal noise ratio is hig her .