SCIENTIFIC - AUTOMATIC REGULATION

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Collection: 
Document Number (FOIA) /ESDN (CREST): 
CIA-RDP80-00809A000600231000-5
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RIPPUB
Original Classification: 
C
Document Page Count: 
4
Document Creation Date: 
December 22, 2016
Document Release Date: 
July 18, 2011
Sequence Number: 
1000
Case Number: 
Publication Date: 
June 30, 1949
Content Type: 
REPORT
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PDF icon CIA-RDP80-00809A000600231000-5.pdf286.54 KB
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Sanitized Copy Approved for Release 2011/07/18: CIA-RDP80-00809A000600231000-5 CLASSIFAMI ION CONFINNAL CENTRAL INTELLIGENCE AkiENCY REPO INFORMATION FROM FOREIGN DOCUMENTS OR RADIO BROADCASTS CD NO COUNTRY 77331t DATE OF INFORMATION 1947 SUBJECT HOW PUBLISHED WHERE PUBLISHED DATE PUBLISHED IANGUAGE Scientific - imitomtic regulation Bimonthly perioiicel Moscow Mar/Apr 1947 Russian UI OBSPAPAT commas HISSIIPATIOE ASSATISS UI UMW. SAMOS SI cur I II MATO WITIIIII In oaaavos or sorsasaas acv as I. a. C. at All U. as LUISLIL III ISISISISAA011os vas rarrauctes 11 111 SADISTS III SST mason WO AS soosvowass ruses is coo. IMAM SI LAC OSIASIOORTISS Or TWA ISM .5 ISISUITTS. SOURCE DATE DIST. 30 Jun 1949 NO. OF PAGES ie SUPPLEMENT TO REPORT NO. THIS IS UNEVALUATED INFORMATION Avtomatita I Telemekhanika, Vol VIII, No 2, 1947. COUNCIL APPROVES 2 FOR DEGREES In the Scientific Council of the Institute of Automatics and Telemechanics, Academy of Sciences USSR . At the meeting of the Scientific Council of the Institute of Automatics and Telemechanice, Academy of Sciences USSR, on 20 Deoember 1945, a defense was conducted of a dissertation presented y M. A. Ayzerman, a co-worker of the Institute, in fulfillment of requirements for the academic degree of Doctor of Technical Sciences. The subject of the dissertation was: "The Criteria tf Conv_rgenoo of Processes of Automatic Pegulation, Taking Into Azcount the Nonlinearity of the Characteristics of the Elem.nts ox the Apparee." The candidate examined the conditions under which the procees of auto- matic regulation was convergent not only "for small (deviations)," but also "for largo (deviations)," after the given initial deviations. Successire applioation of the criteria of Bendivon and the second method of Iyapunov permitted the determination of conditions, which the nonlinear differential equations deocribing the process of rngulstion suet Wier; !II order that ;-No protesa might converge toward a positzcn of eqLflibrium stabilized by the regu- lator after the given deviations. It developed that for the convergence of the processes "for Large(devi- ation)," it was sufficient to require that the nonlinear characteristics of the separate elements of the apparatus not go beyond the limits of the regions which can be set up for any system of equations by a uniform mati:od. The fact of the convergence of the process is not dependent upon how the characteristics proceed inside these regions. The developed methods are set forth in the dissertation for the analysis of classic types of regulators: direct action, indirect action with inflexible feedback connection, isodrome (isochronistic?) regulators, and stabilizers with additional reaction on the basis of the first derivative. CLASSIFICATION FS I - 1 - 081111161111AL -SISTRIOUTIOK 50X1 -HUM 50X1 -HUM Sanitized Copy Approved for Release 2011/07/18: CIA-RDP80-00809A000600231000-5 Sanitized Copy Approved for Release 2011/07/18: CIA-RDP80-00809A000600231000-5 PAL Regions are .constructed, for nil. typos af..regulators, in which .the o4arecteristics of the elemopts'L,f the siporhs should proceed without disturbing the.conditions of col,vcrgenoc of f.ho oynt-m after the given deviations. series- of exaTtplcs of a sirallar type vac solved numaricallY, applicable to concreto installotins of specd regulation of high-speed Diesel motors. In conclusion the candidate formulated six new mathematical problems, the solution of which would guarantee the further perfection of methods de- veloped In the dissertation. The official opponents N. G. Chotayev, Corresponding Member, Academy of Sciences USSR, Professor K. F. Teodorchlk, Doctor of Physicomathematioal Sciences, and Professor G. G. Kalish gave the work a plus grade. Chetayev noted, es the basic attainment of the work, the successive application of strict classical methods of Iyapunov and the ideas pointed out by LyapunovAn a demonstration of one of his theorems for the solution of concrete technical problems of automatic regulation. Chetayez,emphastzed, as essential attainnients, that the developed method permits taking,into account , the nonlinearity of the characteristics fixed graphically. Teodorchik emphasized the meaning of the work for he techniques and physics of oscillations, and noted the possibility of extending the results to certain new problems not mentioned in the dissertation. Academician A. A. Andronov, Doctor of Technical Sciences, Professor T. K. Popov, and N. N. Naetenko, Z. Ya. Beyrakh, M. V. Meyerov, et al, CancLdates of Technical Sciences, took part In the discussion. Andronov remarked that the dissertation of Ayzerman does not essentially contain any new mathmatical oonclusionn, but contains conclusions necessary for the theory of regulation. Namely, in Ayzerman'e dissertation, for a series of practical and importnnt casee there is first of all given a basis of validity satisfying the procedure for linearity of the equation of motion which lies at the base of the majority of contemporary works. . Elucidating thia assertion, Andronov emphasized that over 90 percent of all contemporary works on the theory of regulation are dtioted to linearized problems. Among these, on the sttength of Lyapunov's theorem, the criteria of Routh-Hurvitz, written for such linearized preblems, permit us to speak-- in relation to the original nonlinear problems--only of the convergence of the regulating process with sufficiently small deviationn, which obviously does not by itself establish a procedure. The problem, linked with the basis of linear methods and the explanation of why "stability for small (deviations)" often corresponds in practice to adequate "stability for Large (deviations)," was set up long ago. An essential step in the solution of this problem was made by Ayzermsu. Professor A. I. Iurae, Doctor of Technical Soler:acts, also read a paper at the meting of the Sclentifi,: Council in which he gave a brief evaluation of the work of the candidate. By a sesret vote, the Scientific Council of the Institute unanimously decided to petition for the award of a university degree of Doctor of Techni- cal Sciences to Ayzerman. At the same assembly of the Council, Engineer M. Rozenblat cooiucted a de:ense of his dissertation on the subject "Magnstic Amplifiers," presented in fulfillment of requiremeets for the university degree of Candidate of Teahnical Sciences. - 2 - Sanitized Copy Approved for Release 2011/07/18: CIA-RDP80-00809A000600231000-5 50X1 -HUM ? Sanitized Copy Approved for Release 2011/07/18: CIA-RDP80-00809A000600231000-5 CONFIDENTIAL In the lant i,, veers. ,net;c. amplifinrs lave received a wide appli- cation in nameroue prnet. -pera-e; rec.-illation, and control: During ts time, the beeic proble-is of !:leozy end design of magnetic ampll- fiers were deVeloped to nn lieriequete :iegree. In the first chapter of the d:ssertetien, the basic properties and charac'eristtcs of ferromagnetic snterials under simultaneous magnetization in co sent and variable magnetic fields are discussed. The obtained theo- retical and experimental data is ueed for the analysis of various designs of magnetic amplifiers, and in the development of methods for designing certain types of amplifiees. In the second and third chapters, the basic types of magnetic amplifiers and amplifiers with feedback are diecussed. Conditions are determined for ..maximum output and maximum eeneitivIty of varioue types of amplifiers. The ..:.:ependee.ce:".)f the characteristics of varioue magnetic amplifiers on the change of voltage and frequency of the supply source, the temperature of the surround- ing area, the degree of initial magnetizrtien, and other factors, are 'estab- lished. Results are drawn from experimental renearrh on the most interesting types of magnetic amplifiers. The fourth chapter of the :work represents a specific interest. Ilere, evidently for the first time, the basic factors defining the temporary , characteristics of Magnetic amplifiers are made apparent. The theoretical ant:Vele and experimental research, conducted by the author show that: 1. The lag in a magnetic amplifier is determined chiefly by the para- meters of the control circuit. 2. In ordinary designs using magnetic amplifier with two-sided control, the dependence of the total change of the constant component of the magnetic currents in all the cores of the amplifier on the value of the signal current is close to the linear. As a consequence of this, the process of increasing the currents in the control circuits of such magnetic amplifiers oan be con- sidered as occurring according to exponential law. 3. The time conctant of the cumulative magnetic amplifiers is equal to the sum of the time conetantn of the separate control circuits. 4. The relati.on of the time constants to the coefficient of amplifi- cation is a constant value for similar magnetic amplifiers, distinguished only by the parameters of the control circuits. 5. The inclusion of feed3>ack dir'nishes the rol.Ation of the time oonstant to the ?coefficient of amplification. no fifth chapter contains the author's proposed methode of designing various types of magnetic power amplIfiers, and the exorimeatal verification of the design types. The official opponent, Professor V. n. Mil'ehteyn, Doctor of Telanical Solencee, remarked "The work of Cosisle Roumblat appears to be, so fhi as we know, the first work in which all known types of magnetic amplifiers are examined, the first work the acquaintance with Which gives an adequately com- plete presentation of the diversity of t'se Layouts of magnetic amplifiers, of the relative merits of the designs and construction, and creates for the realer a sufficiently vide scope for the intelligent selection of a magnetic ampli- fier most suitable for use in any concrete case." Docent A. A. Feldbaum, Candidate of Technical Sciences, in his capacity as an official opponent, pointed out "The proposed methods of design appear to be completely practicable for engineering purposes. Therefore, they, together with the rIch experimental data collected In the present work, de- serve vide distribution among engineers. lortog 'o do with design construction and *.esearch of magnetic amplifiers." 3 CONFIDENTIAL aniorenraitt II WiUFIVER 11/11. 50X1 -HUM Sanitized Copy Approved for Release 2011/07/18: CIA-RDP80-00809A000600231000-5 Sanitized Copy Approved for Release 2011/07/18: CIA-RDP80-00809A000600231000-5 ItAtNoting the significant merits and Practical value of the dissertation "Magnetic Amplifiers," the offinl opponont3 expressed the desire to direct farther eerie in the field of theory end deeign of magnetic dmpliflers4 By :.e. Secret vote, the Scientific Council unanimously decided to award Rozonblat the university degree of Candidate of Technical Sciences. The :Ude ideas of the developed methods are set forth 211 articles by the candidates in the periodical, "News of the Academy of Sciences, Depart- ment of Technical Sciences" 12 (194I), and in the periodical "Automatics and Telehochaoice" 2 - 3 (1946), 1 (1947). 50X1 -HUM conamma COVIDEITIAL Sanitized Copy Approved for Release 2011/07/18: CIA-RDP80-00809A000600231000-5