The mesh stiffness of a pair of helical gears is calculated by substituting the variance of the contact line length for the variance of the instantaneous mesh stiffness.
运用傅立叶级数的形式，计算了一对宽斜齿轮副的瞬时啮合刚度及一对啮合轮齿的啮合刚度；
2
The gradient algorithm was adopted to calculate the required control force to suppress the rotor's instantaneous response coming from the parameter variance in the stiffness varying control of rotor.