Rezende, Rafael Luis Yanase deCoelho, João Paulo2023-03-152023-03-152022Yanase De Rezende, Rafael Luis; Coelho, João Paulo (2022). Modelling and control of a retrofitted oven for SMD reflow. In 2nd International Conference on Optimization, Learning Algorithms and Applications, OL2A 2022. 1754, p. 546 - 561. Bragançahttp://hdl.handle.net/10198/27756This paper deals with the modelling and control of an oven for reflowing electronic surface-mounted devices. The modelling is done taking into account that the system has a second-order dynamic behaviour whose parameters were obtained through a genetic algorithm. It is also shown that this system exhibits a high pure time-delay which makes the design of the control system very difficult. In particular, the performance of a PI controller is evaluated with respect to tracking two different types of reference signals. It is observed that the performance of such a controller is severely affected by the huge inertia of the system. In order to mitigate this effect, tests were performed with a different architecture known as the Smith predictor. It is concluded that, although with differences, neither the PI controller nor the Smith allows the tracking of the typical reference in a reflow process.engController designDead-time processesSMD reflowSystem modellingconference object10.1007/978-3-031-23236-7_38