計算餘弦值 的英文怎麼說
中文拼音 [jìsuànyúxiánzhí]
計算餘弦值
英文
cos,cosl-
It builds a relative coordinates based on the jumping - off point of circular interpolation as its origin, caculates the sine and cosine of the angle formed by x axis and the line which connects the origin and the centre of the circle, then gets the coordinates of the centre in the relative coordinates, and enduces a uniform fomula, which is easy to program in computer
摘要用圓弧插補起點作為相對坐標系原點,連接圓弧起點和圓心,求出該連接線和相對坐標x軸的夾角的正餘弦值,由此解出圓心在相對坐標系的坐標,並得到一個統一的計算公式,易於計算機編程實現。The main module of sensorless pmsm vector control such as voltage sensing, current sensing, smo rotor position estimation, speed calculation, generation of sine and cosine, vector coordinate transformation, pi regulators, svpwm vector modulation are all accomplished in the pwm interrupt service routines
永磁同步電機無位置傳感器矢量控制的主要模塊如電壓采樣、電流采樣、滑模轉子位置估算、速度計算、正餘弦值生成、矢量坐標變換、比例積分調節器、空間電壓矢量脈寬調制等都是在pwm中斷服務子程序中完成。Scientific functions are useful for the standard mathematical calculations such as absolute value, sines and cosines, pi, square roots, and so on
科學函數可用於標準數學計算,如:取絕對值、正弦、餘弦、 pi 、平方根等等。
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