AUTOMATED CONTROL SYSTEM OF THE SCAN ANTENNA SYSTEM
DOI:
https://doi.org/10.20998/2079-0023.2020.01.09Keywords:
automated control system, antenna system, scanning, control quality, non-linearity of parameters, errorsAbstract
Based on the method of structural schemes, the control system of the scanning antenna system is synthesized, which is a special case of the tracking system, which, based on the given coordinates, controls the mismatch between the necessary and current values of the azimuth and elevation angles. An important feature of scanning systems is the constant movement of actuators when performing tasks of the intended purpose. Therefore, the nonlinearity of the elements of the navigation system can lead to a significant deterioration in the quality of the scan tasks. The article substantiates the block diagram of scanning on one channel, its mathematical description is determined. At the first stage, an analysis of the stability of a functionally minimal system was carried out. The need was identified for integrating the circuit with a sequentially connected speed controller of proportional-integral-differential action and a feedback signal taken from the tachometer on the axis of the engine. The speed loop was modeled to analyze its stability and ability to maintain its properties when the parameters deviate from the calculated values or the controller parameter settings are varied. A general scheme of the scanning system was built into which a nonlinear element was introduced. As a nonlinear element, a simplified model of a fiber-optic gyroscope with a deadband was chosen. In order to verify compliance with the requirements in transitional and established operating modes, as well as to evaluate the error of the system when exposed to real effects, a model experiment was conducted. The simulation results showed the high quality of the synthesized system. The control errors were investigated in the absence of a nonlinear element, as well as in its presence with a variation in the value of the width of the deadband. It is determined that high values of the width of the dead zone can lead to a breakdown of control, which must be taken into account when substantiating the requirements for such systems.References
Zhang Y., Fu Y., Wang H., Li H., Pan S., Du Y. Restoration of the spatial environment during two-dimensional laser scanning using data on the absolute value of the local deviation angle. Optical magazine. 2019, no. 86, pp. 46–51.
Zhang H., Shi Y., Xu C. Y., Kutsuna M. Surface hardening of gears by laser beam processing. Surface Engineering. 2003, vol. 19, no. 2, pp. 134–136.
Kudin V. P. Skanirujushhaja antennaja sistema diapazona korotkih voln [Short Range Scanning Antenna System]. Izvestija Gomelskogo gosudarstvennogo universiteta imeni F. Skoriny. Ser.: Estestvennye nauki [News of the Gomel State University named after F. Skorina. Series: Natural Science]. 2017, no. 6, pp. 139–144.
Sovremennye informacionnye tehnologii v zadachah navigacii i navedenija bespilotnyh manevrennyh letatelnyh apparatov [Modern information technologies in the problems of navigation and guidance of unmanned maneuverable aircraft] / editors: M. N. Krasylshchykov, G. G. Sebrjakov. Moscow, FIZMATLIT Publ., 2009. 556 p.
Fedulov R. V., Shishkin A. S. Navedenie opticheskoj apparatury malogo kosmicheskogo apparata distancionnogo zondirovanija [Guidance of the optical equipment of a small spacecraft remote sensing]. Vestnik tomskogo gosudarstvennogo universiteta: Matematika i mehanika [Bulletin of Tomsk State University: Mathematics and Mechanics]. 2013, no. 22, pp. 97–104.
Mitrishkin J. V., Dzhumakaev T. K., Korenev P. S. Imitacionnoe modelirovanie sistem upravlenija plazmoj v tokamake so stendom realnogo vremeni [Simulation of plasma control systems in a tokamak with a real-time stand]. Trudy 7-j Vserossijskoj nauchnoprakticheskoj konferencii "Imitacionnoe modelirovanie. Teorija i praktika", t. 2 [Proceedings of the 7th All-Russian Scientific and Practical Conference "Simulation. Theory and practice", vol. 2]. Moscow, IPU RAN Publ., 2015, pp. 224–229.
Chernov A. V., Semjonov A. V. Matematicheskaja model sledjashhih sistem s uchetom nelinejnostej peremennyh sostojanija [A mathematical model of tracking systems taking into account the nonlinearities of state variables]. Vestnik Koncerna VKO "AlmazAntej" [Bulletin of the Concern "Almaz-Antey"]. 2017, no. 1, pp. 88– 97.
Shrejner R. T. Sistemy podchinennogo regulirovanija elektroprivodov. Ch. 1. Elektroprivody postojannogo toka s podchinennym regulirovaniem koordinat [Systems of subordinate regulation of electric drives. Part 1. Electric drives of direct current with subordinate regulation of coordinates]. Yekaterinburg, UGPPU Publ., 1997. 279 p.
Elektroprivod: Uchebnoe posobie [Electric Drive: Tutorial] / ed. S. V. Petuhov, M. V. Krishjanis. Arhangelsk, S(A)FU Publ., 2015. 303 p.
Besekerskij V. A. Dinamicheskij sintez sistem avtomaticheskogo regulirovanija [Dynamic synthesis of automatic control systems]. Moscow, Nauka Publ., 1970. 576 p.
Semjonov A. V., Makarchuk A. V. Matematicheskaja model zadannoj chasti elektromehanicheskoj sledjashchej sistemy s uchetom ogranichenij [A mathematical model of a given part of an electromechanical tracking system, taking into account the limitations]. Mat. Vseros. nauch. konf. "Teoreticheskie i metodicheskie problemy jeffektivnogo funkcionirovanija radiotehnicheskih sistem" [All-Russian Mathematical Scientific Conference "Theoretical and Methodological Problems of the Effective Functioning of Radio Engineering Systems"]. Taganrog, 2013, pp. 37–46.
Avtomaticheskie sistemy upravlenija v srede Matlab-Simulink: metodicheskie ukazanija k vypolneniju laboratornyh rabot [Automated control systems in the environment of Matlab-Simulink: guidelines for laboratory work] / ed. V. S. Shcherbakov, A. A. Ruppel, I. V. Lazuta, S. A. Miljushenko. Omsk: SibADI Publ., 2010. 49 p.
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