Kovalenko A. Models and methods of construction of multidimensional computer-assisted systems with one monomorfic piezoceramic transformer

A research object is a process of construction of multidimensional of the computer-assisted systems with the use of piezoceramic transformers. The aim of dissertation research is an increase of efficiency of work of multidimensional of the computer-assisted systems with the use of one monomorfic piezoceramic transformer due to development of new models and methods of their construction. For a decision the set problem the methods of theory of automatic control, theories of the oscillating systems with the concentrated parameters, theory of electric chains, theory of tensor analysis, method of electroanalogies, were used. For the analysis of transformers the methods of functional, circuit technology, schem-functional and mathematical design, physical experiments, are used also on layouts and pre-production models, methods of probability theory. Authenticity of the got scientific results and conclusions is tested by comparing of theoretical positions to experimental data and dependences, making of pre-production models and their tests. Practical value of the got results: 1. The practical value of work consists in leading to the bread-winner of the got scientific positions to the concrete engineering decisions, what a construction allowed to carry out and experimental verification of pre-production models of multidimensional piezoceramic of the computer-assisted systems and their components. 2. Realization of the worked out methods, scheme and structural decisions extended the scientific and technical base of planning of piezoceramic transformers. 3. The worked out models and methods allow more precisely to describe and design piezoceramic transformers that can measure a few sizes simultaneously. The got results can be drawn on for piezoceramic transformers, that are used in electro-acoustics, hydroacoustics, in an ultrasonic, medical, measuring technique, and in other areas of science and technique. 4. The worked out method of measuring with the use of additional electric signals allows to carry out measuring of two physical sizes in one point of the investigated object, here measuring time diminishes in two times. The offered application simultaneously of positive and negative feed-back allowed in one point of the investigated object to increase the amount of measurands to three. Offered method of measuring more than three physical sizes with the use of digital alarm processor in a measuring channel allow to promote exactness of measuring of physical sizes with the near values of frequencies. 5. The results of dissertation research are inculcated in the STATE " of emergency Bastion"(Cherkasies), and also in the educational process of two higher educational establishments: in the Cherkasy state technological university and black Sea state university of the name Petra Mohyly (Mykolaiv).