Kadykalo I. Optimization of Transient Modes of Movement of Jib Crane Rotation Mechanism

The dissertation presents researches aimed at increasing the efficiency of the jib turning mechanism by reducing the dynamic loads in the metal structure and the drive mechanism during the operation of the jib crane turning mechanism by optimizing the transient modes of movement. The dynamic analysis of the operation of the jib crane rotation mechanism is carried out. The main causes of dynamic loads that occur in the metal structure and the drive mechanism of the jib crane are established. The transient process of starting the jib crane turning mechanism is optimized according to various optimization criteria and the analysis of the theoretical research of optimal control is carried out. The control system of the drive of the mechanism of turn of the jib crane which provides realization of optimum control is developed. To confirm the theoretical calculations, measuring and recording equipment was selected and experimental studies of the dynamics of the jib crane rotation mechanism under different control modes were performed. Based on the research results, recommendations are proposed for the development of a control system for the turning mechanism, the use of which allows to reduce the dynamic loads on the metal structure and the drive mechanism, as well as load oscillations on the flexible suspension during operation of the crane turning mechanism.