Kiriazov I. Automatic control of grain transferring processes on elevators: TTL modelling as a control object, controlled variable formation, semi-industrial testing of SAC

The concept basis of the elevators thread-transport lines (TTL) grain loading automatic control as a means of resolving mutually contradictory requirements for maximum energy efficiency and the minimum probability of emergency situations occurrence is substantiated. The requirements for TTL mathematical models (MM) as control objects are formulated on the basis of this concept, which determined their novelty. MM of grain transfer by paternosters and scraper conveyors processes dynamics as control objects with changing structure and limitations of «emergency situation» type were developed. MM drive electric motors (DEM) of TTL con-veyors operating characteristics were developed, as well as its parameters identification method using their performance characteristics. Models are implemented in the form of simulation models. A method for calculating the conveyors loading rate using the results of total current measurement, which is consumed by their DEM, has been developed, as well as variants of its target-specific implementations and the corresponding controller application software. A software environment has been developed for assembling models and simulation of the grain of any composition transfer processes by TTL. A software and hardware complex (SHC) which implements the technology of semi-industrial trials of SAC was developed. Using this complex, all the components of TTL automated loading optimization system (ALOS) application software are debugged. The implementation of the TTL ALOS for grain transfer on elevator in Hmelnik city and the results of its comprehensive production tests verified the correctness of the concept basis of the TTL grain loading automatic control, the adequacy of the developed models, the correctness and efficiency of the method for calculating the loading rate of conveyors, technology and the SHC for debugging of the TTL ALOS application software.