A Novel Emergency Braking Method with Payload Swing Suppression for Overhead Crane Systems

摘要

In practice, to deal with emergency situations, emergency braking of overhead cranes plays an important role to ensure safety. However, a sudden braking of the trolley may cause uncontrollable swing of the payload, which is very dangerous and can probably lead to collision and even accidents. Therefore a proper emergency braking method with the consideration of payload swing suppression is of great importance. In this paper, we propose a novel method to achieve the emergency braking objective of overhead crane systems. In particular, after deep analysis, the control objective is divided into two parts. Then two kinds of control methods are proposed to achieve the corresponding objective. After that, we combine these control methods together and propose a novel emergency braking control method, which can ensure trolley braking, as well as payload swing suppression simultaneously. At last, simulation results are included to illustrate the superior control performance of the proposed method.