Katarína Draganová

Vector magnetometer used as magnetometric security subsystem

The information obtained from magnetic fields measurements can be utilized in many areas and can be also used for the purpose of an object security. The article deals with experimental results obtained with the VEMA-04, four channel relax-type vector magnetometer. The magnetometer was able to detect the tested common phenomena and proved the possibility to use it to secure objects with evaluation of the disturbances in the measured magnetic field. This subsystem can be integrated into the already existing security systems, since the magnetometer utilizes a microcontroller for communication with other systems.

Possibility of usage the latest GSM generations for the purpose of UAV communication

The communication link between the unmanned aerial vehicle and its ground station is a critical part of the complete unmanned aerial system. Nowadays, there are several kinds of the communication interfaces with different parameters such as operational frequency, data throughput, transmitting power etc. This article deals with the possibility to use the latest generations of mobile telecommunication systems, specifically 3th generation and 4th generation, for the purpose of the unmanned aerial vehicle communication interface.

Transfer characteristics of contactless microwire sensor

The paper presents the experimental results of the transfer characteristics measurement of contactless microwire sensor embedded into a glass fibre composite material. This kind of sensor reacts on several physical quantities, especially on temperature, mechanical stress and external magnetic field. Sensor reacts well on the change of mechanical stress and external magnetic field. Basic sensor description, experimental conditions and experimental procedure are described in the presented paper. The experimental results and the measured transfer characteristics are presented and discussed.

Engineering approaches in control of complex electro-mechanical systems

The paper deals with approaches in controlling of a complex electro-mechanical system. The proposed system is servomotor as a part of camera gimbal intended for UAVs (Unamnned Aerial Vehicles). Camera gimbal is a non-linear system with hysteresis and transport delays. The paper deals with experimental data driven method of servomotor modeling and also with classical control algorithms method and control algorithms based on fuzzy logic. The presented methods, approaches and applications are directly usable for similar electro-mechanical systems. The presented solution is cost effective, precise and fast using advanced algorithms.

Possibile Applications of Magnetic Microwires in Aviation

Abstract Magnetic microwires have been rediscovered due to a number of the unusual magnetic properties and their potential applications. The paper concerns glass-coated magnetic microwires composed of a ferromagnetic metallic core with a diameter of 0.6 - 30 jj.m and of a glass coat with a thickness of 2 - 20 jj.m. The fabrication process and magnetic properties of these microwires are described. Due to their unique properties microwires can be used as a sensing element of sensors. Microwire-based sensors can be used in a wide range of aviation applications as magnetic field sensors, tensile stress sensors or temperature sensors. The main advantages of microwire-based sensors are associated with their small dimensions and weight, which play a very important role in aviation.