Abstract：Research on Robot Tracking of Books Returning to Bookshelf Based on Particle Swarm Optimization Fuzzy PID Control In order to avoid library intelligent returning books to bookshelf robot during the process of searching for books and bookshelvesthe tracking time is long and the path deviation is largeThe system uses a navigation system based on a fuzzy PID control Library AutomationEnhancing the efficiency and accuracy of automated book return robots through the use of optimized navigation systemsThis study uses the Particle Swarm OptimizationPSOalgorithm to optimize the parameters of a fuzzy PID controllerThis controller is used for an automated book return robot in libraries to improve its navigation capabilities when finding books and shelvesThe PSO algorithm is a machine learning technique