the presented phase angle pwm method is centering attention on motor stator voltage space vector and controls the vector angle to vary linearly and so reduces higher harmonics in voltage wave.
本文提出的角度pwm方法着眼于电机的定子电压空间矢量,使其矢量角均匀变化,减小电压波形中的高次谐波分量。
the retardation effect of overload is taken into account using crack closure model and the crack opening stress level is assumed to vary linearly in the yield zone produced by the overload.
采用裂纹闭合模型考虑超载的迟滞效应,认为裂纹张开应力在超载引起的塑性区内按线性规律衰减。
the lattice parameters a vary linearly with the molar fractions, the lattice distortion is mainly affected by the size effect of components.
发现点阵参数随摩尔分数浓度呈线性变化,点阵畸变主要受组分的尺寸效应影响;
the temperature is assumed to vary linearly along the length of the spar.
温度被假设为沿桿长度方向线性变化。