Aleksandr Mikhailovich Letov [1] (November 11 (24), 1911, village of Khomutovo, Kolomensk district of Moscow province - September 30, 1974, Moscow ) - Soviet scientist in the field of automatic control theory, doctor of physical and mathematical sciences (1950), professor, corresponding member of the USSR Academy of Sciences (1968). He was awarded the Order of the Badge of Honor (1951), the Red Banner of Labor (1971), laureate of the USSR State Prize in the field of science and technology (1972) [2] [3] .
| Alexander Mikhailovich Letov | ||||
|---|---|---|---|---|
| Date of Birth | November 11 (24), 1911 | |||
| Place of Birth | village Khomutovo , Kolomna Uyezd , Moscow Province , Russian Empire | |||
| Date of death | September 30, 1974 (aged 62) | |||
| Place of death | Moscow , RSFSR , USSR | |||
| A country |  Russian Empire →  the USSR | |||
| Scientific field | theory of automatic control | |||
| Place of work | Institute for Management Problems, RAS | |||
| Alma mater | MSU (mehmat) | |||
| Academic degree | Doctor of Physical and Mathematical Sciences | |||
| Academic rank | Corresponding Member of the USSR Academy of Sciences | |||
| Awards and prizes |
| |||
Content
Biography
Born on November 24, 1911 in a village of Khomutovo, Kolomensk district, Moscow province, in a peasant family. He studied at the Khomutov rural school, after the family moved to Moscow in 1927, he got a job as a moulder at the foundry of the Michelson Mechanical and Iron Foundry (later the Moscow Electromechanical Plant named after Vladimir Ilyich ), where he worked until 1934, and simultaneously studied at a work faculty in 1930-1932 Moscow State University , and in 1932 he became a student of the Faculty of Mechanics and Mathematics of Moscow State University , first an applicant (as the son of an employee), however, according to the results of the first winter session, he was transferred to student status. In 1937 he graduated with honors from the university [4] , he was awarded the qualification of a scientific worker in the field of mechanics, a university teacher, a technical university and a secondary school teacher.
After graduating from Moscow State University, he left for distribution in Krasnoyarsk, where he worked for two years as a mathematics teacher in high school. In 1939 he returned to Moscow and began to work as a research engineer at the Research Institute-12 of the People's Commissariat of the Aviation Industry until the very beginning of World War II .
In 1941-1945 he worked as a test engineer, and then as the head of the assembly of gyroscopes and autopilots of the plant for measuring equipment and automation elements, at the same time in 1944-1945 he was a graduate student of the Department of Applied Mechanics of Moscow State University (scientific adviser is Professor Bulgakov B.V. ) .
In 1945 he defended his thesis. In 1945-1948 he was the head of the laboratory of the NISO (Scientific Research Institute of Aircraft Equipment) of the People’s Commissariat of the Aviation Industry . He worked at NISO until 1956, and at the same time taught at the Artillery Academy named after F.E. Dzerzhinsky. In 1951, by a decree of the Presidium of the Supreme Soviet of the USSR, A. Letov was awarded the Order of Honor.
By order of December 27, 1947, he was appointed and. about. senior researcher at the Institute of Automation and Telemechanics (IAT; later - Institute for Management Problems of the Russian Academy of Sciences) and was approved as a senior scientific employee on January 7, 1948. He worked at the Institute of Management Problems until 1973.
In 1956, he completely transferred to work at the IAT [5] . In 1958, became head of laboratory No. 16 “Mathematical and computational methods in automation” (tasks — development of mathematical methods for solving applied problems of analysis and synthesis of nonlinear control systems for which there was no proven engineering and mathematical apparatus).
The results obtained in the laboratory in 1948-1950 constituted the basis of the doctoral dissertation “Stability of nonlinear controlled systems”, defended at the Institute of Mechanics of the USSR Academy of Sciences in 1951. In 1955, his monograph “Stability of nonlinear adjustable systems ".
In 1968, Alexander Mikhailovich was elected a corresponding member of the USSR Academy of Sciences in the department of mechanics and control processes. In 1969, the publishing house "Science" published a book by Alexander Mikhailovich "Flight Dynamics and Control", which sets out methods for solving two problems: the problem of programming the trajectory of the center of gravity of an aircraft with specified optimal properties, and the problem of synthesis of an automaton that allows optimal stabilization of motion apparatus along this trajectory in accordance with a given criterion.
In 1969, he became the creator and head of the Department of Mathematical Control Theory at the Peoples' Friendship University (PFUR).
In 1971, A.M. Letov was awarded the Order of the Red Banner of Labor for the successful implementation of the five-year plan for the development of instrumentation.
In 1972, as a member of a group of scientists, he became a laureate of the USSR State Prize in the field of science and technology for the creation of a four-volume volume of engineering monographs, “Technical Cybernetics. Theory of automatic regulation ”, published in 1967-1969 [3] .
He died on September 30, 1974 in Moscow, was buried at the Vvedensky cemetery [4] .
Family
Father Mikhail Semenovich graduated from four classes of a parish school, a participant in the First World War . He was a peasant, after moving to Moscow in 1927 he learned to be an accountant and worked as an accountant for Metrostroy until the end of his life. He died in 1943.
Mother Maria Petrovna also graduated from four classes of the parish school. Survived her son and died in 1982 [3] .
Scientific and organizational activities
In 1956, he made a presentation at the Congress on Automatic Regulation in Heidelberg. He was one of the initiators and founders of the International Federation for Automatic Control (IFAC), subsequently becoming its president from 1958 to 1960.
He was the first Soviet scientist to visit the American Institute of Aeronautics and Astronautics in August 1967, where he made a report on the stabilization of a large manned station [3] .
Scientific Papers and Publications
He was deputy chief editor of the journal "Automation and Telemechanics" [5] .
Books
- "Stability of nonlinear controlled systems." - M., "Science", 1955, reprint 1962.
- “Flight Dynamics and Control.” - M., "Science", 1969 [3] .
Articles
Some articles [3] :
- About the new gyroscopic horizon // Precise industry. 1940. No. 9.
- The behavior of the gyro horizon of Sperry on a bend // Bulletin NII-12. 1940. No. 9.
- Calculation of the rotor of a rapidly rotating gyroscope // Sat. Proceedings of the NII-12. 1941. No. 1, 2.
- The problem of autopilot // Tr. NISO. 1941. No. 13.
- Applied Theory of Gyroscopes. Artil Publishing House. Acad. them. F.E. Dzerzhinsky, 1947.
- The use of gyroscopes in guided missiles // Тp. Artil. Acad. them. F.E. Dzerzhinsky, 1948.
- The equations of motion of a guided projectile of type V-2 // Тp. Artil. Acad. them. F.E. Dzerzhinsky, 1948.
- Stabilization of the straight path of the center of gravity of an unmanned aircraft // Тp. NISO. 1948. No. 32.
- On the possibility of obtaining a gyro-mass effect from a gyroscope with friction in the suspension // Aircraft equipment. 1949. No. 16.
- To the theory of gyrocircuit // Engineer. Sat USSR Academy of Sciences. 1950.
- Feasibility of flying an unmanned aircraft at a given height and the task of constructing the best autopilot // Тp. NISO. 1952. No. 42.
- To the theory of the isodromic regulator // Prikl. 1948. T. 12. Issue. four.
- Regulation of the stationary state of a system subject to constant perturbing forces // Prikl. 1950. T. 12. Issue. 2.
- Actually unstable adjustable systems // 1950. PMM. T. 14. Issue. 2.
- To the theory of gyro-compasses // Engineer. Sat 1952.T. 13.
- About one special case of studying the stability of regulatory systems // Prikl. 1948. T. 12. Issue. 6.
- Stability of regulated systems with two executive bodies // PMM. 1953. T. 17. Issue. four.
- On the theory of quality of nonlinear controlled systems // Autom. 1953. T. 14. No. 5.
- The quality problem for nonlinear autoregulated systems with a quadratic matrix // Izv. USSR Academy of Sciences. Ser. Energy and automation. 1959. No. 3.
- The stability of an automatically controlled bicycle rolling on a horizontal plane // Prikl. 1959. T. 23. Vol. four.
- The First International Congress on Automatic Control // Vestnik AN SSSR, 1960, No. 9.
- Some unsolved problems in the theory of automatic control // Differential Equations, vol. 6, 1970.
- New problems and management methods // Vestnik AN SSSR, No. 10, 1971.
Notes
- ↑ In a number of sources Lyotov
- ↑ Letov Alexander Mikhailovich . Site "Annals of Moscow University." Date of treatment July 28, 2015.
- ↑ 1 2 3 4 5 6 S. N. Vasiliev, N. N. Krasovsky, A. P. Kurdyukov, A. B. Kurzhansky, T. A. Letova. Alexander Mikhailovich Letov (1911–1974) (Russian) // Automation and Telemechanics : Journal. - 2011. - Issue. 11 . - S. 3-8 . - ISSN 0005-2310 .
- ↑ 1 2 Letov Alexander Mikhailovich // Moscow Encyclopedia. / Ch. ed. S.O. Schmidt . - M. , 2007-2014. - T. Volume I. Faces of Moscow : [in 6 books].
- ↑ 1 2 Letov, Alexander Mikhailovich . Of. website of the Institute for Management Problems V. A. Trapeznikova RAS. Date of treatment July 28, 2015.
Links
- Letov, Alexander Mikhailovich on the official website of the RAS
- Letov Alexander Mikhailovich
- Letov Alexander Mikhailovich
- Letov Alexander Mikhailovich