采用复数向量法对曲柄摇杆机构和曲柄滑块机构进行运动分析，建立矢量方程式，对机构的极位夹角、死点位置及最小传动角位置进行分析，按运动过程中的转角关系推导出计算公式，方法简便，思路清晰，求解问题的同时更加明确了运动过程中各构件间的位置关系。 The complex vector method was used to analyze the motion of the crank rocker mechanism and the crank-slider mechanism. The vector equation was established to analyze the polar angle and dead-end position of the mechanism and the position of the minimum transmission angle, which was deduced according to the turning angle during the movement Calculation formula, the method is simple, clear thinking, solving the problem at the same time more clearly the movement of the relationship between the components of the position.