Abstract: The production takt time greatly impact on the twin system modeling of assembly line. A dynamic control method of the twin workshop model is proposed, which considers the takt time constraints is proposed. Detecting the motion of the circuit breaker unit and the assembly line system, and the dynamic motion model of the circuit breaker twins are developed based on the takt time calculation. Through driving force loading, motion logic script controlling and switching, the twin mapping of the assembly line system is realized with fixed and flexible takt time as well. The circuit breaker’s directional bounding boxes and their hierarchy traversal methods are established. The upper, middle and lower layers from the direction of the twin model is filtered during collision to reduce detecting of collision separation axis. Comparisons results show that the twin model has less chattering phenomenon, the collision response time is decreased by 15% and the accuracy of the collision detection is increased by 96.26%.

Key words: circuit breaker, digital twin, takt time, multilayer directional bounding box, collision detection