This article discusses the functioning of miniagrotechniques in particular motoagregates. It is noted that the operator of motoagregates performs much more features and physical work than using a conventional tractor. It was established that the main causes of the physical participation of the operator in the motoagregagate is the destabilizing factors that alter the trajectory of the movement, pulling the load due to changes in coupling properties of propulsion with the ground and the other reasons. The operator is forced to perform the functions of stabilizing the effect of destabilizing factors. A structural model based on the concept motoagregagates electrically controlled system the engine is running and adaptive systems, allowing full automation of work motoagregates.