Machinery & Energetics

At present, the floor grain storage complexes are increasingly distributed. One of the most power-consuming units is a conveyor belt for uniform grain distribution throughout the length of the complex. The most energy efficient mode of operation of such a conveyor is productivity stabilization mode. At the same time, the practical implementation of control systems to stabilize the amount of grain is a relatively difficult task. Sensors for the direct measurement of the volume of bulk cargo require significant investment and in agricultural complexes are used extremely rarely. Another problem hindering the use of this equipment is the design complexity of the control algorithm conveyor loading due to the presence of pure delay link in the control loop. The aim of the research is developing of the optimal control system for the productivity of the belt conveyor, which ensures a reduction in the energy consumption of the complex. In this case, the Bellman-Lyapunov method to obtain the control algorithm using the concept of the immersion method was used. The initial synthesis problem for a nonlinear object in the form of a family of linear tasks of analytical construction is represented. At the final stage of the regulator construction, "sewing" of the solutions on the basis of the law of optimal change of the feedback coefficients was carried out. As a result, for the conveyor productivity stabilizing loop, obtained regulator by a nonlinear law on the state variables is described. The advantage of using a synthesized regulator by the results of a numerical simulation of a grain conveyor is confirmed.

belt conveyor, grain storage, Bellman-Lyapunov method, "immersion" method, stabilization of productivity