Abstract:For the spray field, the spray path planning algorithm determines the coating uniformity, spray cycle, and spray quality of the spray robot during the spray process. In this paper, the research status of the spray path planning method is briefly described from the aspects of complex surface treatment and gun trajectory optimization. The optimization based on mathematical model and intelligent algorithm are introduced. Finally, the paper analyzes the research trend of spray path planning and proposes a smart spray trajectory planning method combining machine vision and self-learning algorithm.