Pub Date : 2020-06-19DOI: 10.17212/1727-2769-2020-1-2-45-59
V. Neyman
Energy conversion modes of the electromagnetic motor when the armature is accelerated are established to be preferable with respect to maximal efficiency. A non-saturated electromagnetic motor where the armature is once accelerated in the magnetic field generated by the inductor is considered to be a research subject. New relations are obtained for the analysis of the conditions when the maximal efficiency is achieved with respect to the energy conversion mode and the elementary magnetic cycle configuration. It is shown that the efficiency of about 100 % can be theoretically achieved only if special automatic control means are used. The efficiency cannot be more than a theoretical limit of 50 % if there is no automatic control. The obtained results and conclusions for separate energy conversion modes are well agreed with the results obtained by other authors in the past.
{"title":"Сonditions of achieving electromagnetic motor maximal efficiency","authors":"V. Neyman","doi":"10.17212/1727-2769-2020-1-2-45-59","DOIUrl":"https://doi.org/10.17212/1727-2769-2020-1-2-45-59","url":null,"abstract":"Energy conversion modes of the electromagnetic motor when the armature is accelerated are established to be preferable with respect to maximal efficiency. A non-saturated electromagnetic motor where the armature is once accelerated in the magnetic field generated by the inductor is considered to be a research subject. New relations are obtained for the analysis of the conditions when the maximal efficiency is achieved with respect to the energy conversion mode and the elementary magnetic cycle configuration. It is shown that the efficiency of about 100 % can be theoretically achieved only if special automatic control means are used. The efficiency cannot be more than a theoretical limit of 50 % if there is no automatic control. The obtained results and conclusions for separate energy conversion modes are well agreed with the results obtained by other authors in the past.","PeriodicalId":448354,"journal":{"name":"Proceedings of the Russian higher school Academy of sciences","volume":"289 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117303580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-06-19DOI: 10.17212/1727-2769-2020-1-2-17-27
V. Grinkevich
The evaluation of the mathematical model parameters of a non-linear object with a transport delay is considered in this paper. A temperature controlled stage based on a Peltier element is an identification object in the paper. Several input signal implementations are applied to the input of the identification object. The least squares method is applied for the calculation of the non-linear differential equitation parameters which describe the identification object. The least squares method is used due to its simplicity and the possibility of identification non-linear objects. The parameters values obtained in the process of identification are provided. The plots of temperature changes in the temperature control system with a controller designed based on the mathematical model of the control object obtained as a result of identification are shown. It is found that the mathematical model obtained in the process of identification may be applied to design controllers for non-linear systems, in particular for a temperature stage based on a Peltier element, and for self-tuning controllers. However, the least square method proposed in the paper cannot estimate the transport delay time. Therefore it is required to evaluate the time delay by temperature transient processes. Dynamic object identification is applied when it is required to obtain a mathematical model structure and evaluate the parameters by an input and output control object signal. Also, identification is applied for auto tuning of controllers. A mathematical model of a control object is required to design the controller which is used to provide the required accuracy and stability of control systems. Peltier elements are applied to design low-power and small- size temperature stage . Hot benches based on a Peltier element can provide the desired temperature above and below ambient temperature.
{"title":"The identification of a device based on a Peltier element by the least squares method","authors":"V. Grinkevich","doi":"10.17212/1727-2769-2020-1-2-17-27","DOIUrl":"https://doi.org/10.17212/1727-2769-2020-1-2-17-27","url":null,"abstract":"The evaluation of the mathematical model parameters of a non-linear object with a transport delay is considered in this paper. A temperature controlled stage based on a Peltier element is an identification object in the paper. Several input signal implementations are applied to the input of the identification object. The least squares method is applied for the calculation of the non-linear differential equitation parameters which describe the identification object. The least squares method is used due to its simplicity and the possibility of identification non-linear objects. The parameters values obtained in the process of identification are provided. The plots of temperature changes in the temperature control system with a controller designed based on the mathematical model of the control object obtained as a result of identification are shown. It is found that the mathematical model obtained in the process of identification may be applied to design controllers for non-linear systems, in particular for a temperature stage based on a Peltier element, and for self-tuning controllers. However, the least square method proposed in the paper cannot estimate the transport delay time. Therefore it is required to evaluate the time delay by temperature transient processes. Dynamic object identification is applied when it is required to obtain a mathematical model structure and evaluate the parameters by an input and output control object signal. Also, identification is applied for auto tuning of controllers. A mathematical model of a control object is required to design the controller which is used to provide the required accuracy and stability of control systems. Peltier elements are applied to design low-power and small- size temperature stage . Hot benches based on a Peltier element can provide the desired temperature above and below ambient temperature.","PeriodicalId":448354,"journal":{"name":"Proceedings of the Russian higher school Academy of sciences","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130308290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-06-19DOI: 10.17212/1727-2769-2020-1-2-68-78
M. Stepanov, Yu. G. Nikulina
The conditions of physical realizability of one of the varieties of aplanitic lens collimators, a bifocal lens collimator, which has two points of perfect focus and do not lie on the main optical axis, are considered. Based on the relationship of the parameters specified during the design of the bifocal lens collimator (aperture size, thickness, focal length, distance from the main optical axis to the focal point, tilt of the phase front in the aperture), conditions that are necessary for the synthesis of a physically feasible collimator are formulated. The solution of this problem is based on the properties of an ellipse of equal edges and the geometry of a bifocal lens collimator. The graphic dependencies of the obtained expressions are given and analyzed. Based on this analysis, the mutual dependence of the parameters specified at the beginning of the calculation of the lens surface is determined. Systems of inequalities that establish the conditions for the realizability of a bifocal lens collimator are written. A number of restrictions on the initial parameters of the bifocal lens collimator are recorded. The fulfillment of the inequalities obtained in the article is a necessary condition for the physical realizability of the bifocal lens collimator.
{"title":"Necessary conditions of physical realizability of the bifocal lens collimator","authors":"M. Stepanov, Yu. G. Nikulina","doi":"10.17212/1727-2769-2020-1-2-68-78","DOIUrl":"https://doi.org/10.17212/1727-2769-2020-1-2-68-78","url":null,"abstract":"The conditions of physical realizability of one of the varieties of aplanitic lens collimators, a bifocal lens collimator, which has two points of perfect focus and do not lie on the main optical axis, are considered. Based on the relationship of the parameters specified during the design of the bifocal lens collimator (aperture size, thickness, focal length, distance from the main optical axis to the focal point, tilt of the phase front in the aperture), conditions that are necessary for the synthesis of a physically feasible collimator are formulated. The solution of this problem is based on the properties of an ellipse of equal edges and the geometry of a bifocal lens collimator. The graphic dependencies of the obtained expressions are given and analyzed. Based on this analysis, the mutual dependence of the parameters specified at the beginning of the calculation of the lens surface is determined. Systems of inequalities that establish the conditions for the realizability of a bifocal lens collimator are written. A number of restrictions on the initial parameters of the bifocal lens collimator are recorded. The fulfillment of the inequalities obtained in the article is a necessary condition for the physical realizability of the bifocal lens collimator.","PeriodicalId":448354,"journal":{"name":"Proceedings of the Russian higher school Academy of sciences","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122398354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-12-21DOI: 10.17212/1727-2769-2019-4-7-25
V. Dubrovsky, A. V. Topovsky
New periodical solutions ( , , ) u x y t of modified Kadomtsev-Petviashvili-1 (mKP-1) equation with the integrable boundary condition = 0 y u by the use of the Zakharov-Manakov -dressing(dibar-dressing) method are constructed. A general determinant formula for these solutions is derived. The restrictions from reality and boundary conditions for solutions via a general determinant formula are exactly satisfied by an appropriate choice of corresponding parameters. It is shown how the imposition of a boundary condition leads to the formation of some kind of eigen modes of normal oscillations of the field ( , , ) u x y t in the semi-plane 0 y . An explicit example of a two-periodic solution with an integrable boundary condition as some nonlinear superposition of two simple one-periodical (linear-periodic) solutions and point singularities
利用Zakharov-Manakov-dressing(dibar-dressing)方法构造了边界条件为0 y u的修正Kadomtsev-Petviashvili-1 (mKP-1)方程的周期解(，，)u x y t。导出了这些解的一般行列式。通过适当选择相应的参数，可以精确地满足一般行列式解的现实限制和边界条件。这是表明边界条件的实施会导致某种特征的形成模式的正常振荡场(,,)u x y t ysemi-plane 0。一个具有可积边界条件的两周期解作为两个简单单周期(线性周期)解和点奇点的非线性叠加的显式例子
{"title":"Construction of periodic solutions of the modified Kadomtsev-Petviashvili equation via the dibar-dressing method","authors":"V. Dubrovsky, A. V. Topovsky","doi":"10.17212/1727-2769-2019-4-7-25","DOIUrl":"https://doi.org/10.17212/1727-2769-2019-4-7-25","url":null,"abstract":"New periodical solutions ( , , ) u x y t of modified Kadomtsev-Petviashvili-1 (mKP-1) equation with the integrable boundary condition = 0 y u by the use of the Zakharov-Manakov -dressing(dibar-dressing) method are constructed. A general determinant formula for these solutions is derived. The restrictions from reality and boundary conditions for solutions via a general determinant formula are exactly satisfied by an appropriate choice of corresponding parameters. It is shown how the imposition of a boundary condition leads to the formation of some kind of eigen modes of normal oscillations of the field ( , , ) u x y t in the semi-plane 0 y . An explicit example of a two-periodic solution with an integrable boundary condition as some nonlinear superposition of two simple one-periodical (linear-periodic) solutions and point singularities","PeriodicalId":448354,"journal":{"name":"Proceedings of the Russian higher school Academy of sciences","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125748983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-09-20DOI: 10.17212/1727-2769-2019-3-7-17
M. Soppa
{"title":"Numerical solution of masking and skatterer equivalence problems taking into account the change of polarization of the probe signal","authors":"M. Soppa","doi":"10.17212/1727-2769-2019-3-7-17","DOIUrl":"https://doi.org/10.17212/1727-2769-2019-3-7-17","url":null,"abstract":"","PeriodicalId":448354,"journal":{"name":"Proceedings of the Russian higher school Academy of sciences","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131175622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-09-20DOI: 10.17212/1727-2769-2019-3-48-56
E. Lavrenov, Z. Temlyakova, A. A. Temlyakov
{"title":"Synthesis of the device supporting the operation mode of an induction motor under asymmetry of a rotor winding","authors":"E. Lavrenov, Z. Temlyakova, A. A. Temlyakov","doi":"10.17212/1727-2769-2019-3-48-56","DOIUrl":"https://doi.org/10.17212/1727-2769-2019-3-48-56","url":null,"abstract":"","PeriodicalId":448354,"journal":{"name":"Proceedings of the Russian higher school Academy of sciences","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133707283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-09-20DOI: 10.17212/1727-2769-2019-3-34-47
A. Gorbachev, Y. Parshin
{"title":"Design of a 4-beam printed phased antenna array with a Batler matrix","authors":"A. Gorbachev, Y. Parshin","doi":"10.17212/1727-2769-2019-3-34-47","DOIUrl":"https://doi.org/10.17212/1727-2769-2019-3-34-47","url":null,"abstract":"","PeriodicalId":448354,"journal":{"name":"Proceedings of the Russian higher school Academy of sciences","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124810836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-09-20DOI: 10.17212/1727-2769-2019-3-57-69
A. G. Paulish, V. Golyashov, A. V. Gusachenko, A. Morozov, K. Dorozhkin, V. Suslyaev, V. Kostyuchenko, S. Pyrgaeva
{"title":"Spectral characteristics of the pyroelectric detector sensitivity based on tetraaminodiphenyl in visible, IR and THz-ranges","authors":"A. G. Paulish, V. Golyashov, A. V. Gusachenko, A. Morozov, K. Dorozhkin, V. Suslyaev, V. Kostyuchenko, S. Pyrgaeva","doi":"10.17212/1727-2769-2019-3-57-69","DOIUrl":"https://doi.org/10.17212/1727-2769-2019-3-57-69","url":null,"abstract":"","PeriodicalId":448354,"journal":{"name":"Proceedings of the Russian higher school Academy of sciences","volume":"157 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116512911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-09-20DOI: 10.17212/1727-2769-2019-3-18-33
D. Feoktistov, E. Orlova
{"title":"Wetting of aluminum-magnesium alloy surfaces after laser processing","authors":"D. Feoktistov, E. Orlova","doi":"10.17212/1727-2769-2019-3-18-33","DOIUrl":"https://doi.org/10.17212/1727-2769-2019-3-18-33","url":null,"abstract":"","PeriodicalId":448354,"journal":{"name":"Proceedings of the Russian higher school Academy of sciences","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121968917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-09-20DOI: 10.17212/1727-2769-2019-3-70-86
V. Tkachev, A. Eremin, T. Tarabrina, I. Kudinov
{"title":"Hydrodynamics and heat exchange in fluids with viscosity dependence on temperature","authors":"V. Tkachev, A. Eremin, T. Tarabrina, I. Kudinov","doi":"10.17212/1727-2769-2019-3-70-86","DOIUrl":"https://doi.org/10.17212/1727-2769-2019-3-70-86","url":null,"abstract":"","PeriodicalId":448354,"journal":{"name":"Proceedings of the Russian higher school Academy of sciences","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122268277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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