The principle of DDA and the technical scheme was described.Then the DDA interpolation algorithm and the control method were presented in detail.Also some critical program code of DDA was given.

• 在分析数字积分插补原理的基础上,进行了整体实现方案设计,并介绍了数字积分器的实现和步进电机的控制方法,给出了相应积分器的实现代码。