No abstract

Economic growth opportunities and the country’s role in the global economy are directly dependent on the use of advanced technologies in industry. Mechanical engineering, and especially the reproduction equipment sector, is a basic industry that creates a wealthy nation and a country’s influence in the international market. The leading economic powers have already entered the period of the sixth technological order related to the development of micromechanics, thermonuclear and renewable energy, membrane and quantum technologies, nanotechnologies and others. In Russia at the moment, despite the measures of state support, the engineering industry is in deep decline. Major shifts in state support are needed to close this technological gap. However, enterprises themselves need to strengthen their work to improve management efficiency. The most promising method is to use a process approach, while its implementation should not be limited to documenting procedures. After all, business modeling is just a way of displaying the current and projected processes of an enterprise to improve its performance. The platform for the successful implementation of the process approach should be called the development of a business model, which should include a comprehensive analysis of the enterprise’s activities, market conditions, industry and technology development trends.

The article describes the design and principle of operation of a doubly fed induction motor, which is a special class of electrical machines that combine two principles – electromagnetic reduction and doubly fed. The methods of control of this motor are listed. Doubly fed induction motor have six control actions, which allows by their combination to create electric drives with different functional properties and principles of construction. A general assessment of the properties and capabilities of an electric drive on the basis of doubly fed induction motor is given.

One of the most important components of an aircraft ground testing infrastructure is hardware and software test benches with complete or partial imitation of the aircraft in complex, on-board electronic equipment and controls. The development and debugging of such complexes is a complicated problem. The solution for this problem is presented in in the form of the automatic test complex for unmanned aerial vehicle engines and propulsion devices mounted on the Gough–Stewart platform manipulator. The complex is based on the modular measuring platform and also includes a set of various sensitive elements for forces, vibration, speed, torque, video and sound registration. The article also describes the procedure for one of the functional assessment stages of the U AV engine test complex, notably, the assessment of the tensometric measurement accuracy. Further development of the complex associated with the software implementation of atmosphere, wind turbulence models and modules for preliminary formation of test scenarios-UAV flight paths.

The doubly fed inductor electric motor is the basis of the electric drive. It has two three-phase windings which can have different connection schemes: «separate connection», «star», «delta». Each scheme has its own advantages which are manifested in various modes of operation. The existing electric drive models are designed for the most used connection scheme «star». The models for other winding connection schemes are not available. This does not allow to study the modes of operation with other winding connection schemes. In doubly fed electric drives each winding can have its own connection diagram. The existing models also do not provide such an opportunity. The new models of the doubly fed inductor electric drive can be used with various winding connection schemes – «separate connection», «star» and «delta». Each motor winding can have its own winding diagram. The method of nodal potentials enables to simulate the windings switching during the process of their modeling. This model of electric drive is more universal than the existing ones and provides more research opportunities.