Abstract: Method and device to manage a coiler apparatus associated with a distributor, in which there is at least an exit of the feeder of hot or cold semi-worked metal products, and with a reel, both being respectively moved with suitable controlled movement and rotation means, able to manage the coiling obtaining coils with desired characteristics.

Abstract: Method and device (10) to manage a coiler apparatus (11) associated with a distributor (15), in which there is at least an exit of the feeder (21) of hot or cold semi-worked metal products, and with a reel (16), both being respectively moved with suitable controlled movement and rotation means, able to manage the coiling obtaining coils with desired characteristics.

Abstract: A butt-welding control system for bars, blooms, or billets controls the welding operation by acting on an actuator (U) for opening the valve for controlling positioning of the clamps of the welding machine and on the partializer, on the basis of the operation of an observer (A) of dynamic state that observes state variables (X) of the welding process; a dynamic path generator (B) for performance variables (Z), which defines pre-determined optimal paths (Zset) for the performance variables (Z) to follow; a dynamic control law (C), based upon values of performance variables (Z) and of the optimal paths (Zset), designed to control the valve for positioning the clams (U) and the partializer on the basis of the value of the performance variables (Z) and of the desired paths; and a generator (E) of sync signals designed to generate sync signals (Sync) for the observer (A), the dynamic path generator (B) and the dynamic control law (C).