Fractional order modeling and high-frequency repetitive motion control for flexible swing arm system

Flexible swing arm system (FSAS) with flexibility and nonlinearity is the key component of die bonder in LED packaging industry. This paper explores the application of fractional calculus on modeling and high-frequency repetitive motion control for FSAS. Considering of the complex characteristics of high-frequency repetitive motion on different stages, fractional order models are designed to describe FSAS more accurately. The proposed fractional order models are identified using particle swarm optimization (PSO) algorithm. Based on the comprehensive control performance evaluation, proportional integral (PI) controllers are optimized for FSAS according to the identified fractional order models. Simulation and experiments will be conducted to demonstrate the existence and practical viability of the proposed fractional order models for the FSAS.