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Simulation of the software for managing the antenna complex

DOI 10.18127/j19997493-201902-03

Keywords:

V.A. Galkin – Ph.D.(Eng.), Associate Professor, Department «Information Processing and Control Systems», Bauman Moscow State Technical University
E-mail: galkin@bmstu.ru
A.S. Kornilova – Master, Department «Information Processing and Control Systems», Bauman Moscow State Technical University; Engineer of the 2nd category, Special Design Bureau of Moscow Power Engineering Institute
E-mail: annskor2008@mail.ru


This paper presents and describes the architecture for simulating the operation of software parts for interacting with instruments using the Simulator software and on a real antenna complex. A distinctive feature of the architecture for modeling on a real installation is the presence of physical connections between the workstation and the antenna complex. USS and Modbus / TCP protocols were used for modeling on the antenna complex, and data transmission was carried out via the COM port and Ethernet, respectively. When modeling using the Simulator software, interaction with physical devices was not applied: the simulation was performed on a single workstation using Unix Domain Socket and Modbus / TCP technologies. For a detailed presentation of the modeling process, a detailed description of the software «Simulator». The description includes the applied technologies in the development process, a brief description of the work process and interaction with other programs, a visual representation of the software.
The article describes in detail the modeling process and presents graphs showing the simulation results of each of the transients. In addi-tion, the formula for calculating the speed is given, since it uses a non-standard approach to calculating the speed of movement for dis-play on graphs. The evaluation of the obtained results of the field simulation was carried out by comparing the data obtained when test-ing software components using the Simulator software and on the antenna complex. The results of full-scale simulation showed that Si-mulator software mimics the physical characteristics of the antenna complex exactly: dialing, holding and dropping speed, and also has the same transients with the antenna installation. Testing of software parts was carried out as follows: using the test application to send commands to the engine, the maximum movement speed was set and the «Start movement» command was transmitted, in addition, a test application was started in parallel to read the current angle values from the sensor and write the values to a file. At the moment when it is necessary to stop the movement, the command «Stop motion» was sent from the test application to interact with the engine. To evaluate the results of testing, the graphs of the dependence of speed on dimensionless time points in which the program recorded the angle were obtained. In addition, for a more visual representation of the transient processes, enlarged fragments of graphs are shown, which show the set and reset speeds, as well as an explanation of the results obtained.
This paper presents and describes the architecture for simulating the operation of software parts for interacting with instruments using the Simulator software and on a real antenna complex. A distinctive feature of the architecture for modeling on a real installation is the presence of physical connections between the workstation and the antenna complex. USS and Modbus / TCP protocols were used for modeling on the antenna complex, and data transmission was carried out via the COM port and Ethernet, respectively. When modeling using the Simulator software, interaction with physical devices was not applied: the simulation was performed on a single workstation using Unix Domain Socket and Modbus / TCP technologies. For a detailed presentation of the modeling process, a detailed description of the software «Simulator». The description includes the applied technologies in the development process, a brief description of the work process and interaction with other programs, a visual representation of the software.
The article describes in detail the modeling process and presents graphs showing the simulation results of each of the transients. In addi-tion, the formula for calculating the speed is given, since it uses a non-standard approach to calculating the speed of movement for dis-play on graphs. The results of full-scale simulation showed that Simulator software mimics the physical characteristics of the antenna complex exactly: dialing, holding and dropping speed, and also has the same transients with the antenna installation. However, transients and holding speed on the Simulator software are more stable than on the antenna complex, since the antenna complex is on the street and is subject to various external influences, and there are no measurement errors introduced by the instruments on the Simulator software. Consequently, the software «Simulator» can be used as a «perfect» software simulator for the proposed antenna complex. In addition, using the Simulator software, you can debug more complex software to control the positioning of the antenna system.

References:
  1. Galkin V.A., Kornilova A.S. Arkhitektura prilozhenii dlya upravleniya pozitsionirovaniem antennogo kompleksa nazemnogo bazirovaniya. Dinamika slozhnykh sistem - XXI vek. 2018. № 4. S. 50−52.
  2. Marenko V.A. Antennyi kompleks kak slozhnaya sistema. Matematicheskie struktury i modelirovanie. 2003. № 11. S. 54−58.
  3. RTOS QNX. Informatsionnyi sait, posvyashchennyi UNIX-sistemam. URL = http://rdimitr.chat.ru/qnx.htm (data obrashcheniya 14.10.2018 g.).
  4. Galkin V.A., Grigorev Yu.A. Telekommunikatsii i seti: Ucheb. posobie dlya vuzov. M.: Izd-vo MGTU im. N.E. Baumana. 2003. 608 s.
  5. Petrushkova E., Chadov S., Morozov A., Musin M. Raspredelennaya sistema upravleniya antennym kompleksom. Sistemnaya integratsiya. Kosmonavtika. 2012.
  6. Urlich Yu.M., Gusev L.I., Leonov M.S., Selivanov A.S. Radiotekhnicheskie kompleksy dlya upravleniya dalnimi kosmicheskimi apparatami i dlya nauchnykh issledovanii. Pod red. Molotova E.P. M.: Fizmalit. 2007. 232 s.

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