Research on the principle of space high-precision temperature control system of liquid crystals based Stokes polarimeter
The magnetic field is one of the most important parameters in solar physics, and a polarimeter is the key device to measure the solar magnetic field. Liquid crystals based Stokes polarimeter is a novel technology, and will be applied for magnetic field measurement in the first space-based solar obse...
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| Veröffentlicht in: | Research in astronomy and astrophysics 2021-01, Vol.21 (1), p.10-104 |
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| creator | Zhang, Xin-Wei Zhang, Yang Lin, Jia-Ben Hou, Jun-Feng Deng, Yuan-Yong |
| description | The magnetic field is one of the most important parameters in solar physics, and a polarimeter is the key device to measure the solar magnetic field. Liquid crystals based Stokes polarimeter is a novel technology, and will be applied for magnetic field measurement in the first space-based solar observatory satellite developed by China, Advanced Space-based Solar Observatory. However, the liquid crystals based Stokes polarimeter in space is not a mature technology. Therefore, it is of great scientific significance to study the control method and characteristics of the device. The retardation produced by a liquid crystal variable retarder is sensitive to the temperature, and the retardation changes 0.09° per 0.1° C. The error in polarization measurement caused by this change is 0.016, which affects the accuracy of magnetic field measurement. In order to ensure the stability of its performance, this paper proposes a high-precision temperature control system for liquid crystals based Stokes polarimeter in space. In order to optimize the structure design and temperature control system, the temperature field of liquid crystals based Stokes polarimeter is analyzed by the finite element method, and the influence of light on the temperature field of the liquid crystal variable retarder is analyzed theoretically. By analyzing the principle of high-precision temperature measurement in space, a high-precision temperature measurement circuit based on integrated operational amplifier, programmable amplifier and 12 bit A/D is designed, and a high-precision space temperature control system is developed by applying the integral separation PI temperature control algorithm and PWM driving heating films. The experimental results show that the effect of temperature control is accurate and stable, whenever the liquid crystals based Stokes polarimeter is either in the air or vacuum. The temperature stability is within ±0.015° C, which demonstrates greatly improved stability for the liquid crystals based Stokes polarimeter. |
| doi_str_mv | 10.1088/1674-4527/21/1/10 |
| format | Article |
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Liquid crystals based Stokes polarimeter is a novel technology, and will be applied for magnetic field measurement in the first space-based solar observatory satellite developed by China, Advanced Space-based Solar Observatory. However, the liquid crystals based Stokes polarimeter in space is not a mature technology. Therefore, it is of great scientific significance to study the control method and characteristics of the device. The retardation produced by a liquid crystal variable retarder is sensitive to the temperature, and the retardation changes 0.09° per 0.1° C. The error in polarization measurement caused by this change is 0.016, which affects the accuracy of magnetic field measurement. In order to ensure the stability of its performance, this paper proposes a high-precision temperature control system for liquid crystals based Stokes polarimeter in space. In order to optimize the structure design and temperature control system, the temperature field of liquid crystals based Stokes polarimeter is analyzed by the finite element method, and the influence of light on the temperature field of the liquid crystal variable retarder is analyzed theoretically. By analyzing the principle of high-precision temperature measurement in space, a high-precision temperature measurement circuit based on integrated operational amplifier, programmable amplifier and 12 bit A/D is designed, and a high-precision space temperature control system is developed by applying the integral separation PI temperature control algorithm and PWM driving heating films. The experimental results show that the effect of temperature control is accurate and stable, whenever the liquid crystals based Stokes polarimeter is either in the air or vacuum. The temperature stability is within ±0.015° C, which demonstrates greatly improved stability for the liquid crystals based Stokes polarimeter.</description><identifier>ISSN: 1674-4527</identifier><identifier>DOI: 10.1088/1674-4527/21/1/10</identifier><language>eng</language><publisher>Beijing: National Astronomical Observatories, CAS and IOP Publishing Ltd</publisher><subject>Algorithms ; Circuits ; Control algorithms ; Control methods ; Control stability ; Control systems ; Control systems design ; Control theory ; Crystal structure ; Crystals ; Design optimization ; Error analysis ; Finite element method ; high-precision temperature measurement ; Liquid crystals ; liquid crystals based Stokes polarimeter ; Magnetic fields ; Magnetic measurement ; Observatories ; Operational amplifiers ; PID control ; Polarimeters ; Satellite observation ; Satellites ; Solar magnetic field ; Solar physics ; space high-precision temperature control ; Space temperature ; Technology ; Temperature control ; Temperature distribution ; Temperature effects ; temperature field analysis ; Temperature measurement</subject><ispartof>Research in astronomy and astrophysics, 2021-01, Vol.21 (1), p.10-104</ispartof><rights>2021 National Astronomical Observatories, CAS and IOP Publishing Ltd.</rights><rights>Copyright IOP Publishing Jan 2021</rights><rights>Copyright © Wanfang Data Co. Ltd. All Rights Reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c372t-2c021e15f801db479502494da283b9105899085cdd24316a71727ed43cfff843</citedby><cites>FETCH-LOGICAL-c372t-2c021e15f801db479502494da283b9105899085cdd24316a71727ed43cfff843</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Uhttp://www.wanfangdata.com.cn/images/PeriodicalImages/ttwlxb/ttwlxb.jpg</thumbnail><linktopdf>$$Uhttps://iopscience.iop.org/article/10.1088/1674-4527/21/1/10/pdf$$EPDF$$P50$$Giop$$H</linktopdf><link.rule.ids>314,780,784,4024,27923,27924,27925,53846</link.rule.ids></links><search><creatorcontrib>Zhang, Xin-Wei</creatorcontrib><creatorcontrib>Zhang, Yang</creatorcontrib><creatorcontrib>Lin, Jia-Ben</creatorcontrib><creatorcontrib>Hou, Jun-Feng</creatorcontrib><creatorcontrib>Deng, Yuan-Yong</creatorcontrib><title>Research on the principle of space high-precision temperature control system of liquid crystals based Stokes polarimeter</title><title>Research in astronomy and astrophysics</title><addtitle>Res. Astron. Astrophys</addtitle><description>The magnetic field is one of the most important parameters in solar physics, and a polarimeter is the key device to measure the solar magnetic field. Liquid crystals based Stokes polarimeter is a novel technology, and will be applied for magnetic field measurement in the first space-based solar observatory satellite developed by China, Advanced Space-based Solar Observatory. However, the liquid crystals based Stokes polarimeter in space is not a mature technology. Therefore, it is of great scientific significance to study the control method and characteristics of the device. The retardation produced by a liquid crystal variable retarder is sensitive to the temperature, and the retardation changes 0.09° per 0.1° C. The error in polarization measurement caused by this change is 0.016, which affects the accuracy of magnetic field measurement. In order to ensure the stability of its performance, this paper proposes a high-precision temperature control system for liquid crystals based Stokes polarimeter in space. In order to optimize the structure design and temperature control system, the temperature field of liquid crystals based Stokes polarimeter is analyzed by the finite element method, and the influence of light on the temperature field of the liquid crystal variable retarder is analyzed theoretically. By analyzing the principle of high-precision temperature measurement in space, a high-precision temperature measurement circuit based on integrated operational amplifier, programmable amplifier and 12 bit A/D is designed, and a high-precision space temperature control system is developed by applying the integral separation PI temperature control algorithm and PWM driving heating films. The experimental results show that the effect of temperature control is accurate and stable, whenever the liquid crystals based Stokes polarimeter is either in the air or vacuum. The temperature stability is within ±0.015° C, which demonstrates greatly improved stability for the liquid crystals based Stokes polarimeter.</description><subject>Algorithms</subject><subject>Circuits</subject><subject>Control algorithms</subject><subject>Control methods</subject><subject>Control stability</subject><subject>Control systems</subject><subject>Control systems design</subject><subject>Control theory</subject><subject>Crystal structure</subject><subject>Crystals</subject><subject>Design optimization</subject><subject>Error analysis</subject><subject>Finite element method</subject><subject>high-precision temperature measurement</subject><subject>Liquid crystals</subject><subject>liquid crystals based Stokes polarimeter</subject><subject>Magnetic fields</subject><subject>Magnetic measurement</subject><subject>Observatories</subject><subject>Operational amplifiers</subject><subject>PID control</subject><subject>Polarimeters</subject><subject>Satellite observation</subject><subject>Satellites</subject><subject>Solar magnetic field</subject><subject>Solar physics</subject><subject>space high-precision temperature control</subject><subject>Space temperature</subject><subject>Technology</subject><subject>Temperature control</subject><subject>Temperature distribution</subject><subject>Temperature effects</subject><subject>temperature field analysis</subject><subject>Temperature measurement</subject><issn>1674-4527</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNp9kM1KAzEUhWehYK0-gLuAgquxSSbTySyl-AcFQbsPaeamTZ1O0iSl9e3NMKIbkbO4cO53T8LJsiuC7wjmfEKmFctZSasJJZMkfJKNfryz7DyEDcbTspzSUXZ8gwDSqzWyHYprQM6bThnXArIaBScVoLVZrXPnQZlgegq2DryMew9I2S5626LwGZLdn7RmtzcNUj45sg1oKQM06D3aDwjI2VZ6s4UI_iI71WkPl99znC0eHxaz53z--vQyu5_nqqhozKnClAApNcekWbKqLjFlNWsk5cWyJrjkdY15qZqGsoJMZUUqWkHDCqW15qwYZ7dD7EF2WnYrsbF736UHRYyH9rikKR73SuT1QDpvd3sI8ReljJe4qmvCE0UGSnkbggctUmFb6T8FwaJvX_RNi75pQYlI6pPz4cZY9xv6H3_zB--lHIj0WeEaXXwBXECUfA</recordid><startdate>202101</startdate><enddate>202101</enddate><creator>Zhang, Xin-Wei</creator><creator>Zhang, Yang</creator><creator>Lin, Jia-Ben</creator><creator>Hou, Jun-Feng</creator><creator>Deng, Yuan-Yong</creator><general>National Astronomical Observatories, CAS and IOP Publishing Ltd</general><general>IOP Publishing</general><general>Key Laboratory of Solar Activity,National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China</general><general>School of Astronomy and Space Science,University of Chinese Academy of Sciences,Beijing 101408,China%School of Astronomy and Space Science,University of Chinese Academy of Sciences,Beijing 101408,China</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>8FD</scope><scope>H8D</scope><scope>KL.</scope><scope>L7M</scope><scope>2B.</scope><scope>4A8</scope><scope>92I</scope><scope>93N</scope><scope>PSX</scope><scope>TCJ</scope></search><sort><creationdate>202101</creationdate><title>Research on the principle of space high-precision temperature control system of liquid crystals based Stokes polarimeter</title><author>Zhang, Xin-Wei ; Zhang, Yang ; Lin, Jia-Ben ; Hou, Jun-Feng ; Deng, Yuan-Yong</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c372t-2c021e15f801db479502494da283b9105899085cdd24316a71727ed43cfff843</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Algorithms</topic><topic>Circuits</topic><topic>Control algorithms</topic><topic>Control methods</topic><topic>Control stability</topic><topic>Control systems</topic><topic>Control systems design</topic><topic>Control theory</topic><topic>Crystal structure</topic><topic>Crystals</topic><topic>Design optimization</topic><topic>Error analysis</topic><topic>Finite element method</topic><topic>high-precision temperature measurement</topic><topic>Liquid crystals</topic><topic>liquid crystals based Stokes polarimeter</topic><topic>Magnetic fields</topic><topic>Magnetic measurement</topic><topic>Observatories</topic><topic>Operational amplifiers</topic><topic>PID control</topic><topic>Polarimeters</topic><topic>Satellite observation</topic><topic>Satellites</topic><topic>Solar magnetic field</topic><topic>Solar physics</topic><topic>space high-precision temperature control</topic><topic>Space temperature</topic><topic>Technology</topic><topic>Temperature control</topic><topic>Temperature distribution</topic><topic>Temperature effects</topic><topic>temperature field analysis</topic><topic>Temperature measurement</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zhang, Xin-Wei</creatorcontrib><creatorcontrib>Zhang, Yang</creatorcontrib><creatorcontrib>Lin, Jia-Ben</creatorcontrib><creatorcontrib>Hou, Jun-Feng</creatorcontrib><creatorcontrib>Deng, Yuan-Yong</creatorcontrib><collection>CrossRef</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Wanfang Data Journals - Hong Kong</collection><collection>WANFANG Data Centre</collection><collection>Wanfang Data Journals</collection><collection>万方数据期刊 - 香港版</collection><collection>China Online Journals (COJ)</collection><collection>China Online Journals (COJ)</collection><jtitle>Research in astronomy and astrophysics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zhang, Xin-Wei</au><au>Zhang, Yang</au><au>Lin, Jia-Ben</au><au>Hou, Jun-Feng</au><au>Deng, Yuan-Yong</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Research on the principle of space high-precision temperature control system of liquid crystals based Stokes polarimeter</atitle><jtitle>Research in astronomy and astrophysics</jtitle><addtitle>Res. Astron. Astrophys</addtitle><date>2021-01</date><risdate>2021</risdate><volume>21</volume><issue>1</issue><spage>10</spage><epage>104</epage><pages>10-104</pages><issn>1674-4527</issn><abstract>The magnetic field is one of the most important parameters in solar physics, and a polarimeter is the key device to measure the solar magnetic field. Liquid crystals based Stokes polarimeter is a novel technology, and will be applied for magnetic field measurement in the first space-based solar observatory satellite developed by China, Advanced Space-based Solar Observatory. However, the liquid crystals based Stokes polarimeter in space is not a mature technology. Therefore, it is of great scientific significance to study the control method and characteristics of the device. The retardation produced by a liquid crystal variable retarder is sensitive to the temperature, and the retardation changes 0.09° per 0.1° C. The error in polarization measurement caused by this change is 0.016, which affects the accuracy of magnetic field measurement. In order to ensure the stability of its performance, this paper proposes a high-precision temperature control system for liquid crystals based Stokes polarimeter in space. In order to optimize the structure design and temperature control system, the temperature field of liquid crystals based Stokes polarimeter is analyzed by the finite element method, and the influence of light on the temperature field of the liquid crystal variable retarder is analyzed theoretically. By analyzing the principle of high-precision temperature measurement in space, a high-precision temperature measurement circuit based on integrated operational amplifier, programmable amplifier and 12 bit A/D is designed, and a high-precision space temperature control system is developed by applying the integral separation PI temperature control algorithm and PWM driving heating films. The experimental results show that the effect of temperature control is accurate and stable, whenever the liquid crystals based Stokes polarimeter is either in the air or vacuum. The temperature stability is within ±0.015° C, which demonstrates greatly improved stability for the liquid crystals based Stokes polarimeter.</abstract><cop>Beijing</cop><pub>National Astronomical Observatories, CAS and IOP Publishing Ltd</pub><doi>10.1088/1674-4527/21/1/10</doi><tpages>8</tpages></addata></record> |
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| source | Institute of Physics Journals; Alma/SFX Local Collection |
| subjects | Algorithms Circuits Control algorithms Control methods Control stability Control systems Control systems design Control theory Crystal structure Crystals Design optimization Error analysis Finite element method high-precision temperature measurement Liquid crystals liquid crystals based Stokes polarimeter Magnetic fields Magnetic measurement Observatories Operational amplifiers PID control Polarimeters Satellite observation Satellites Solar magnetic field Solar physics space high-precision temperature control Space temperature Technology Temperature control Temperature distribution Temperature effects temperature field analysis Temperature measurement |
| title | Research on the principle of space high-precision temperature control system of liquid crystals based Stokes polarimeter |
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