Indian Journal of Science and Technology
Year: 2015, Volume: 8, Issue: 32, Pages: 1-7
J. J. Yermekbayeva*, K. K. Seitzhanova, G. A. Uskenbayeva and K. S. Kulniyazova
Background/Objectives: This paper studies fundamentals of classical, of dynamic modes of the engine to the analog and discrete regulators and stability of linear systems. The overall goal is to define, analyze and evaluate classical and Simulink information measures pertained to data processing by low–power electronic devices, diagrams of processes in the functional model. Methods/Statistical Analysis: We construct a functional model of the system with analog and digital parts and compare them to dynamic conditions. A continuous part of the system’s actuator is described by the transfer function. This transfer function was verified on the stability by the algebraic stability criterion, namely the criterion of Hurwitz. We use the fundamentals of the method of Lyapunov functions for studying the robust stability of the system for electric locomotives with asynchronous traction motors. Findings: There is a virtual model of the induction motor that has been built on the program MatLab by blocks libraries SimPowerSystems of Simulink. We study dynamic mode power electronic devices by taking in the transient functional patterns collected from the virtual elements. This paper analyzes PID-control processing and synthesis of the studied system with nonlinear control law. Our findings enable existing and future communication, sensing, information fusion, computing and processing stability control systems. Consistent tools and practical schemes facilitate developments of novel engineering solutions, technical readiness and technological capabilities. Conditions of robust stability obtained in the form of a linear system of inequalities for uncertain parameters of objects and set the parameters of the controller. The paper demonstrates that the system has steady stationary states both in negative and in positive area of change of uncertain parameters of object control. This research presents that the implementation of the law contributes to the control in the shortest possible time to bring the electric control system to the steady state, which highly good affects the operation of the electric locomotive. Application/Improvements: The obtained results allow to build high performance control system via increased potential robust stability. This approach provides dynamic security and performance of the system for any changes to uncertain parameters of the control object.
Keywords: Asynchronous Traction Motor, Control System, Lyapunov Function, PID, Stability
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