The technique of back emf induction in bldc motor is analyzed , the " virtual neutral point " method and the technique of " 3 - step " start are introduced 主要分析了反电动势感应方法,并阐述了虚拟中点法和三段式起动技术。
The result shows that the sufficient and necessary condition of the quadratic rational b - spline curve ' s curvature monotony is similar to the quadratic rational bezier curves " , but its condition is some different from the quadratic rational bezier curves " curve ' s rendering algorithm is an important content in computer graphics , cad 曲线的生成算法是计算机图形学的重要内容。对于一些基本曲线,如直线,圆,椭圆等,都有快速生成算法,如画直线的bresenham算法, dda算法,画圆的bresenham算法,中点法,正负法, pitterway的椭圆及抛物线绘制算法等等。
法: law升降中点法: half-sum method中点法则: midpoint rule中点法向基节: mean normal base pitch中点法向径节: mean normal diameter pitch中点法向模数: mean normal module点法: digital pressing; dot method中点: center mark; center point; centre mark; centre middle; centre point; centre spot; focus; median point; mid point; mid position; mid-position; middle point; neutral point组中点;区中点: cla mid-point(cla mark); class mid-point (class mark); class mid-point (class mark)组中点;组中点: cla mark(cla mid-point); class mark (class mid-point); class mark (class mid-point)鞍点法: saddle point method; saddle-point method斑点法: spotting method标点法: punctuation; puncturation冰点法: cryoscopic method; cryoscopy; freezing point method; freezing-point method查点法: dead stop method单点法: one-point method; single point method; single-point methods定点法: fixed point method; fixed-point approach; method of fixed points; method of fixed-points; method of plotting positions; pointing多点法: multipoint method沸点法: boiling point method浮点法: floating point共点法: common point method拐点法: inflection-point method过点法: berpunktmethode over-point method击点法: digital hitting manipulation计点法: point-count