The paper considers a process of development of computer models for mechatronic multi-regime systems. A simplified approach for model development is proposed here. The approach is based on application of library of typical module and element models. The models of the modules are based on cyclic structure. The structure repeats the cyclic process of module operation. The modules of the object are identified by comparing schematic diagram with the typical modules of the library. System model is obtained by assembly from typical models of the elements and modules in accordance with the schematic diagram. The application of the approach is illustrated by providing the example.