Nekrasov A. The electromechanical system of the movable loading device with automatic centering and transverse coveyer belt stabilization

The dissertation is devoted to the elaboration of methods and ways of automatic centering and transverse conveyor belt stabilization by means of controllable electric drive. Existing methods and ways of transverse conveyor belt stabilization are analyzed. Their disadvantages are shown.The way and algorithm of electromechanical system control is elaborated. The regulative action is formed according to transverse belt work tool position. Flexible system parameters are also considered. The requires to the work tool centering electric drive are formulated. Dependencies for loads, engines power and static characteristics calculation are proposed. It allows to calculate power circuit parameters of the electric drive, which consists of inductive-capacitate converter, autonomous current converter and asynchronous motor. Mathematic model and program for calculation of dynamic modes and energy characteristics of the electric drive are elaborated. The nonsinusoidal form of current and magnetic circuit saturation is considered. The optimal low of asynchronous motor frequency start is proposed. The criteria are fast operation and loss minimization. Dependencies for regulative action calculation are given. The need stressed is to employ elaborated electromechanical system.