DETERMINATION OF CURRENT SETTING TIME IN INDUCTIVE LOAD OF VOLTAGE-TO-CURRENT CONVERTER UNDER NON-HARMONIC INFLUENCE
Journal Title: Вісник Національного університету "Львівська політехніка", серія "Радіоелектроніка та телекомунікації" - Year 2013, Vol 766, Issue 2013
Abstract
The paper presents analysis of problems dealing with the determination of the current setting time in the inductive component of the complex load of Voltage-to-current (VTC) converter under non-harmonic input influence. There is showed the change in the transient response and in the current setting time of the inductor on changing the VTC converter and complex load parameters. Expression to determine the current setting time of complex load of VTC converter at given level of dynamic error is presented. The estimation of dynamic error in determining the current setting time is presented in accordance with the time dependencies of transient responses of current setting in inductive load of VTC converter with complex load’s and VTС’s converters different parameters. The mathematical model of precision VTC converter [1] with deflection system (DS) of cathode-ray tube (CRT) of television scanning optical microscope connected to its output has been designed and is presented as a complete equivalent circuit taking into account the resistance and parasitic capacitance of load. In accordance with the set conditions of raster formation on screen of such CRT, the control of converter is carried out by non-harmonic signal with variable shape, frequency, amplitude and displacement [2]. Precision VTC converter built as parallel circuit with a deep DS’s current feedback, the signal of which is formed on the feedback resistor, which is connected in series with the load, has been studied. To ensure the aperiodic current setting the bypass resistor is connected to the load in parallel. While analyzing this circuit we’re considering that: the static error due to instability of comparison resistors and feedback resistor is equal to zero, the cutoff frequency of VTC converter is higher than the resonant frequency of the load, and the error due to resistance of DS is compensated. The mathematical model allows to carry out a complete theoretical study of precision VTC converter and to get expressions to determine the parameters upon certain conditions: 1) supply voltage of VTC converter is higher than the maximum voltage on the DS during the transition process; 2) amplifier is presented as one inertial circuit with real parameters: unity gain frequency fВ , gain amplifier K0 ; 3) the resistance of DS rL and parasitic capacitance CL are taken into account at analysis; 4) considered that the feedback resistor RЗЗ is non-inductive; 5) the current flowing through the resistor R2 relative to current of feedback resistor is very small and it is neglected.
Authors and Affiliations
V. Vasylyuk, Volodymyr Shkliarskyy
Keywords
Related Articles
- EP ID EP460987
- DOI -
- Views 136
- Downloads 0
DEVELOPING OF MOBILE ROBOTIC TECHNICAL SYSTEM BASED ON FPGA
In the article the structure of the designed FPGA based mobile robot technical system is described. For the design the block-hierarchical approach was used. This system includes the following elements: - the MicroBlaze s...
DEVELOPMENT THE PROCESS OPTIMIZATION METHOD OF MANUFACTURING THE RADIO-ELECTRONIC EQUIPMENT WITH USING OPTIMIZATION PARETO-REGIONS
At the department of theoretical radioengineering and radiomeasurements of Lviv Polytechnic National university the theory and methods of modeling and a process optimization the quality assurance processes of the radio-e...
Minimization of logic functions system by konjuncterms parallel splitting method
A new heuristic minimization method of logic functions of n variables has been suggested. It is based on the parallel splitting of conjuncterms and differs from the known methods for it is simpler in implementation due t...
NARROWING THE WIDTH OF THE SENSITIVE AREA OF MICROWAVE DOPPLER RADAR
The paper presents a way of narrowing the width of the sensitive area of radio-wave Doppler sensor. This is important when the sensor is used for oscillating measuring or biomedical research to eliminate the influence of...
MODEL OF ACOUSTOOPTICAL SWITCH FOR ALL OPTICAL TELECOMMUNICATION SYSTEMS
Optical communication using semiconductor lasers as sources and optical fiber as the transmission medium is the only solution to handle the massive growth of network traffic. A single strand of fiber offers a bandwidth o...