A project of digital control with MCU is presented in this paper, the model is built up based on the characteristic of the hoist, the formulas are also given and main functions are introduced.

• 介绍了一种恒速度方案，采用了单片机进行数字控制，根据绞车的工作特性，建立了控制模型，给出了数学公式，介绍了主要功能。