Many heat transfer tubes are distributed on the tube plates of a steam generator that requires periodic inspection by robots.Existing inspection robots are usually involved in issues:Robots with manipulators need comp...Many heat transfer tubes are distributed on the tube plates of a steam generator that requires periodic inspection by robots.Existing inspection robots are usually involved in issues:Robots with manipulators need complicated installation due to their fixed base;tube mobile robots suffer from low running efficiency because of their structural restricts.Since there are thousands of tubes to be checked,task planning is essential to guarantee the precise,orderly,and efficient inspection process.Most in-service robots check the task tubes using row-by-row and column-bycolumn planning.This leads to unnecessary inspections,resulting in a long shutdown and affecting the regular operation of a nuclear power plant.Therefore,this paper introduces the structure and control system of a dexterous robot and proposes a task planning method.This method proceeds into three steps:task allocation,base position search,and sequence planning.To allocate the task regions,this method calculates the tool work matrix and proposes a criterion to evaluate a sub-region.And then all tasks contained in the sub-region are considered globally to search the base positions.Lastly,we apply an improved ant colony algorithm for base sequence planning and determine the inspection orders according to the planned path.We validated the optimized algorithm by conducting task planning experiments using our robot on a tube sheet.The results show that the proposed method can accomplish full task coverage with few repetitive or redundant inspections and it increases the efficiency by 33.31% compared to the traditional planning algorithms.展开更多
在现代工业应用中,巡检移动机器人凭借其自动化和智能化的特点,已广泛应用于设备监控与维护领域。这些机器人的有效运作依赖于高效的控制系统和可靠的通信技术。其中,控制器局域网(Controller Area Network,CAN)总线技术因其高可靠性和...在现代工业应用中,巡检移动机器人凭借其自动化和智能化的特点,已广泛应用于设备监控与维护领域。这些机器人的有效运作依赖于高效的控制系统和可靠的通信技术。其中,控制器局域网(Controller Area Network,CAN)总线技术因其高可靠性和实时性,在机器人通信系统中占据重要地位。文章详细分析巡检机器人的运动控制需求,并基于这些需求设计针对性的CAN总线通信方案,包括网络结构、数据帧格式以及通信协议和错误处理机制。展开更多
基金supported by the National Natural Science Foundation of China(Grant No.U2013214)the Self-Planned Task of the State Key Laboratory of Robotics and System(HIT),China(Grant No.SKLRS202001A03).
文摘Many heat transfer tubes are distributed on the tube plates of a steam generator that requires periodic inspection by robots.Existing inspection robots are usually involved in issues:Robots with manipulators need complicated installation due to their fixed base;tube mobile robots suffer from low running efficiency because of their structural restricts.Since there are thousands of tubes to be checked,task planning is essential to guarantee the precise,orderly,and efficient inspection process.Most in-service robots check the task tubes using row-by-row and column-bycolumn planning.This leads to unnecessary inspections,resulting in a long shutdown and affecting the regular operation of a nuclear power plant.Therefore,this paper introduces the structure and control system of a dexterous robot and proposes a task planning method.This method proceeds into three steps:task allocation,base position search,and sequence planning.To allocate the task regions,this method calculates the tool work matrix and proposes a criterion to evaluate a sub-region.And then all tasks contained in the sub-region are considered globally to search the base positions.Lastly,we apply an improved ant colony algorithm for base sequence planning and determine the inspection orders according to the planned path.We validated the optimized algorithm by conducting task planning experiments using our robot on a tube sheet.The results show that the proposed method can accomplish full task coverage with few repetitive or redundant inspections and it increases the efficiency by 33.31% compared to the traditional planning algorithms.
文摘在现代工业应用中,巡检移动机器人凭借其自动化和智能化的特点,已广泛应用于设备监控与维护领域。这些机器人的有效运作依赖于高效的控制系统和可靠的通信技术。其中,控制器局域网(Controller Area Network,CAN)总线技术因其高可靠性和实时性,在机器人通信系统中占据重要地位。文章详细分析巡检机器人的运动控制需求,并基于这些需求设计针对性的CAN总线通信方案,包括网络结构、数据帧格式以及通信协议和错误处理机制。
