运动控制系统的核心控制对象是轴。采用面向对象方法，建立轴对象的类结构、状态转移图和数据流图，在该模型的基础上，可以进行轴控制参数的设置，运动控制库函数的规划和控制算法与控制方案的拟定。关键词 运动控制轴 建模Research on Axes Object Module of Motion Control System Liu Ning ( College of Science and Technology. Jinan University, China 510632) Abstract Axis is kernel control object of motion control system. By the Object Oriented Analyses method, a class’s structure of the axis, state transition diagram and data follow diagram was built. Base on this module, the control parameters set of the axes, the plan of the motion control database functions and the control algorithm & scheme can be decided.Keywords Motion Control Axes Moduling