The method of multi objective synthesis of nonlinear robust control by multimass electromechanical systems

Abstract

Aim. Development of the method of multi objective synthesis of nonlinear robust control by multimass electromechanical systems to satisfy various requirements for the operation of multi-mass systems in various modes. Methodology. The problem of multi objective synthesis of nonlinear robust control of multimass electromechanical systems is formulated and the possibility of satisfying various requirements for the operation of such systems in various modes based on the concept of functionally multiple membership of the state vector and the solution of the Hamilton-Jacobi-Isaacs equation is shown. A method for choosing weight matrices with the help the vector of purpose of nonlinear robust control is formed by solving a zero-sum vector antagonistic game has been substantiated and developed. Results. The results multi objective synthesis of nonlinear robust two-mass electromechanical servo systems in which differences requirements for the operation of such systems in various modes were satisfied are given. Based on the results of modeling and experimental studies it is established, that with the help of synthesized robust nonlinear controllers, it is possible to improve of quality indicators of two-mass electromechanical servo system in comparison with the system with standard regulators. Originality. For the first time the method of multi objective synthesis of nonlinear robust control by multimass electromechanical systems to satisfy various requirements for the operation of multimass systems in various modes is developed. Practical value. From the point of view of the practical implementation the possibility of solving the problem of multi objective synthesis of nonlinear robust control systems to satisfy various requirements for the operation of multimass electromechanical systems in various modes is shown.

Protection of workers against the magnetic field of 330-750 kV overhead power lines when performing work without removing the voltage under load

“…This problem remains insufficiently developed both theoretically and practically. Therefore, a certain step in its solution was the development by the authors of a mathematical model of the MF in the area of work without removing the voltage under the load [16], and the methodology for its calculation, which are based on the results of previously performed studies of the MF of various technical objects [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31]. The latest research by the authors [16] confirms the relevance of solving the problem of protecting workers from the effects of the MF in Ukraine when performing work on PTLs without de-energizing.…”