Equidistant interpolation can give rise to convergence difficulties when the number of interpolation points becomes large . this difficulty is often referred to as runge ' s phenomenon 等距點插值會帶來收斂困難當(dāng)插值點數(shù)量增加。這一困難被稱為龍格現(xiàn)象。
The systemic research on the algorithms and the correlative algorithms establish massive foundation for the application of quintic spline curves in nc machining . ( 3 ) until now , interpolation points have mostly been selected manually in an empirical way 五次樣條插值算法及其配套算法的系統(tǒng)深入研究,為五次樣條曲線在數(shù)控加工技術(shù)領(lǐng)域中的應(yīng)用奠定了堅實的算法基礎(chǔ)。
It is necessary to explore methods to find out interpolation points for processing of substantive and dense digitized data in an automatic manner . this dissertation presents two algorithms called as " quintic - curve - method " and " sixtic - curve - method " which are applied to automatically select nodes for quintic spline interpolation ( 3 )針對大量稠密數(shù)字化數(shù)據(jù)五次樣條插值的需要,開發(fā)了兩種插值節(jié)點自動選擇算法:五次曲線法和六次曲線法。
This paper simulates the effect of voltage fluctuation inspection through the tool of matlab . and proves the filters ' s stability . in the part of self - checkout , pi ( proportional integral ) control arithmetic is put forward to check the gain k and the calculated results show the method ' s effectiveness . then many comparements toward pst are done in different realization methods such as different interpolation points classification number and sample frequency . though simulation and calculation we can see the designed flicermeter can meet our country ' s standands 文中利用matlab對電壓波動的檢測效果進行了仿真;并對涉及到的濾波器的穩(wěn)定性做了證明;在自校驗部分提出了將pi (比例、積分)算法用于數(shù)字濾波器增益k值的確定,取得了不錯的效果;然后分別從取不同插值點、不同分級數(shù)和不同采樣頻率這幾個方面出發(fā),對計算出的p _ ( st )值進行了比較。