I. Introduction
In the process of rocket propellant mixing, it is necessary to clean the blade surface. But due to the particularity of the working environment, manual cleaning has the disadvantages of low safety and low efficiency. It is proposed to use robot automation equipment for operation. However, considering the complexity of blade spatial pose, it is not conducive to robot cleaning work directly. Therefore, in this paper, a robot visual servo is used to control the robot to achieve blade cleaning work.