№1 2018


The algorithm of parry failures in the onboard digital computer complexes with the structural and time redundancy


D.S. Viktorov, E.V. Samovolina


Military Aerospace Defense Academy
Tver, Russian Federation


Currently, the problem of ensuring reliable operation of onboard digital computing systems is becoming increasingly important. When designing on-Board digital computing systems of spacecraft, it is necessary to provide a combination of a number of indicators: high performance, minimal mass-size and energy characteristics, availability of diagnostic tools and parry the consequences of failures. In addition, one of the main requirements for the onboard digital computing complex of spacecraft is the high total reliability of the system, the minimum time for detection and parry of failures. To improve the reliability of control systems, there are many ways, the main of which is structural redundancy. The use of reservations makes it possible, through the introduction of redundancy, by voting to identify the failed system and exclude it from the configuration. However, in onboard digital computing complexes the failure rate is much lower than the failure rate. This can cause the failure to be perceived by the system as a failure and cause the system to exit the configuration of a healthy channel. By returning the program to the previous recovery point and passing the program fragment again, you can classify the type of failure/failure. Under this approach, the reconfiguration of the system will occur only after unsuccessful attempts to pass a fragment of the program n times (as a rule, the technique is used repeat 7–8 times). The aim of the work is to develop an algorithm for parrying failures in onboard computing systems with three-channel architecture, which involves the complex application of test control and recovery points with different dominance depending on the number of serviceable channels.


test control, recovery point, on-board computer


[1] Kafka P. How Safe Is Safe Enough? [Kafka P. // Proceeding of 10th European Conference on Safety and Reliability]. Munich, Germany, 13–17 September, 1999, vol. 1. pp. 385–390. (In Russian)

[2] Kharchenko V. S. Modeli i svojstva mnogoal'ternativnyh otkazoustojchivyh sistem [Models and properties of multialternative fault-tolerant systems]. Avtomatika I telemekhanika, 1992, no. 12, p. 140–147. (In Russian)

[3] Kharchenko V. S., Litvinenko V. G., Tereshchenkova S. V., Melnikov V. A. Obespechenie ustojchivosti upravlyayushchih vychislitel'nyh sistem k fizicheskim defektam i defektam programmirovaniya programmno-apparatnyh sredstv [The sustainability managers of computer systems to physical defects and defects of the programming hardware and software]. Foreign Radioelectronics, 1992, no. 6, p. 18–35. (In Russian)

[4] Domenici S. M. Postroenie nadezhnyh logicheskih ustrojstv [Building a reliable logical devices]. Moscow, Energy Publ., 1971. 212 p.

[5] Cherkesov G. N. Nadyozhnost' programmno-apparatnyh kompleksov [Reliability of software and hardware systems]. St. Petersburg, Peter Publ., 2004. 472 p.

[6] Razygraev A. P. Osnovy upravleniya poletom kosmicheskih apparatov : ucheb. posobie dlya vtuzov [The basics of flight control of spacecrafts: the Textbook. textbook for technical colleges]. 2nd ed., Rev. and extra. Moscow, Mashinostroenie Publ., 1990. 480 p.

[7] Mikrin E. A. Bortovye kompleksy upravleniya kosmicheskimi apparatami i proektirovanie ih programmnogo obespecheniya [Onboard systems of spacecraft control and design of their software]. Moscow, Publishing house of MGTU they. N. Uh. Bauman, 2003. 336 р.

[8] Krasovskii A. P. Metrologiya kosmicheskih navigacionnyh sputnikovyh sistem. Monografiya [Metrology, space navigation satellite systems. Monograph]. Mendeleevo, FSUE "VNIIFTRI", 2009. 216 p.

[9] Osnovy teorii poleta kosmicheskih apparatov [Fundamentals of the theory of flight of space vehicles] (ed. by G. S. Narimanov, M. K. Tihonravova). Moscow, Mechanical engineering Publ., 1972. 608 p.

[10] Kosmicheskij raketnyj kompleks «Zenit» glazami ego sozdatelej [Space rocket complex "Zenit" through the eyes of its creators] (ed. V. N. Solovyov, e.a.). Moscow, MAI, 2003. 216 p.

For citing this article

Viktorov D.S., Samovolina E.V. The algorithm of parry failures in the onboard digital computer complexes with the structural and time redundancy // Spacecrafts & Technologies, 2018, vol. 2, no. 1, pp. 22-29. doi: 10.26732/2618-7957-2018-1-22-29