International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

In their way of operation, electric motors are in themselves electromechanical systems, which to the greatest extent allow realizing the concept of building a mechatronic system. This paper presents a microprocessor-based bench for measuring the current and angular velocity of a brushed DC motor as a function of armature voltage at no-load. The report shows the use of the bench to calculate the parameters of the DC motor and to evaluate its condition. An analysis is made of the condition of the engine and the modes in which it is most efficient.

In order to determine the total spatial and temporal scale of the propagation of anthropogenic sources of noise, it is necess ary to identify them, which can be achieved by comparing underwater and sea surface observation data. For this purpose, it is necessary to determine the direction to the noise object in a function of time. In the development of a passive hydro-acoustic system positioned on the seabed for the detection, classification and determination of the direction to an underwater object, an adaptive processor sh all be designed, examined and experimented to dynamically determine the weighting factors of a two-element antenna grille according to the criteria of the minimum of the average square error and the maximum of the signal noise ratio

Dethedetection of hulls requires the implementation of a built-in or autonomous provides a full range of functionalities for the detection and classification of transmitted sonar signals, generation of imitative signal with spatial parameters, analogous to those reflected by the seabed, and its radiation. This helps to model the shape, the sonar shadow and the reflective surface of the bottom mine in order to mask it by generating a packet simulating chaotic impulse disturbances with parameters corresponding to those of possible reflections from fictitious bottom objects and by re-emitting the received and additionally modeled hydro acoustic pulses with a calculated time lag to
achieve the desired result