Design and field validation of a high-rise façade-cleaning robot with dual active safety and block-wise cleaning strategy

Purpose This study aims to present a façade-cleaning robot for safe, efficient maintenance of high-rise glass curtain walls, combining active safety with a block-wise cleaning strategy. Design/methodology/approach The robot uses a modular Cartesian architecture with a synchronous-belt lifting module, worm-gear self-locking and multipoint vacuum anchoring. A distributed master–slave controller coordinates multiaxis motion, and a block-wise planner decomposes façades into overlapping units. Indoor