船舶
船舶
선박
SHIP & BOAT
2014年
2期
9-14
,共6页
谱分析%ITTC谱%局部气垫双体船%Welch法
譜分析%ITTC譜%跼部氣墊雙體船%Welch法
보분석%ITTC보%국부기점쌍체선%Welch법
spectral analysis%ITTC spectrum%PASCAT%Welch method
为了使局部气垫双体船在航行过程中能时刻感知海况来调节气垫气流量，分析对比了从海浪波高信号反推出海浪谱的4种方法，从而为选取出气垫控制系统内反演波浪谱提供最优控制算法。通过已知海浪谱的波浪，将反演出的海浪谱与已知谱对比，寻找出最优算法。最终表明Welch法的结果较理想，可达到工程应用精度。
為瞭使跼部氣墊雙體船在航行過程中能時刻感知海況來調節氣墊氣流量，分析對比瞭從海浪波高信號反推齣海浪譜的4種方法，從而為選取齣氣墊控製繫統內反縯波浪譜提供最優控製算法。通過已知海浪譜的波浪，將反縯齣的海浪譜與已知譜對比，尋找齣最優算法。最終錶明Welch法的結果較理想，可達到工程應用精度。
위료사국부기점쌍체선재항행과정중능시각감지해황래조절기점기류량，분석대비료종해랑파고신호반추출해랑보적4충방법，종이위선취출기점공제계통내반연파랑보제공최우공제산법。통과이지해랑보적파랑，장반연출적해랑보여이지보대비，심조출최우산법。최종표명Welch법적결과교이상，가체도공정응용정도。
In order to make PASCAT regulate air flow with perception of sea state now and then, this paper analyzes and compares four methods, which deduce the wave spectrum signals from the amplitude of sea wave, in order to provide optimal control algorithm for selecting the inversion wave spectrum in the control system. The optimal algorithm is obtained by comparing the deduced wave spectrum with known spectrum. It shows that the results from Welch method are satisfying and can meet the engineering precision.
