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半球諧振陀螺儀溫控系統(tǒng)的設(shè)計
2021年電子技術(shù)應(yīng)用第5期
秦 琴1,姜景科1,,陳振宇1,,呂沁元1,,李 強(qiáng)2
1.上海第二工業(yè)大學(xué) 工學(xué)部,上海201209,;2.上海思晉智能科技有限公司,上海201209
摘要: 熱漂移是影響半球諧振陀螺使用精度的重要因素之一。為了保證半球諧振陀螺的輸出精度,,設(shè)計了一種半球諧振陀螺溫控系統(tǒng),為陀螺提供一個恒溫環(huán)境,,減小溫度變化帶來的影響,,避免熱漂移的產(chǎn)生,進(jìn)而保證半球諧振陀螺的使用精度,。該系統(tǒng)采用硬件結(jié)構(gòu)設(shè)計結(jié)合軟件編程,,運(yùn)用PID控制算法結(jié)合繼電反饋法自整定參數(shù),實(shí)現(xiàn)了整個溫控系統(tǒng)的設(shè)計,。硬件設(shè)計了恒溫箱和控制柜,,其中恒溫箱內(nèi)置金屬托盤,用于放置半球諧振陀螺儀,;控制柜內(nèi)置油循環(huán)系統(tǒng)和數(shù)據(jù)采集設(shè)備,,用于系統(tǒng)的加熱,、冷卻和數(shù)據(jù)采集;軟件采用LabVIEW完成整個系統(tǒng)程序設(shè)計,,并在上位機(jī)提供可視化界面,。整個系統(tǒng)通過反復(fù)實(shí)驗(yàn),結(jié)果表明,,該溫控系統(tǒng)能夠達(dá)到預(yù)期的設(shè)計效果,,溫控精度可以達(dá)到±0.05 ℃。
中圖分類號: TN06
文獻(xiàn)標(biāo)識碼: A
DOI:10.16157/j.issn.0258-7998.201180
中文引用格式: 秦琴,,姜景科,,陳振宇,等. 半球諧振陀螺儀溫控系統(tǒng)的設(shè)計[J].電子技術(shù)應(yīng)用,,2021,,47(5):64-68,72.
英文引用格式: Qin Qin,,Jiang Jingke,,Chen Zhenyu,et al. Design of temperature control system of hemispherical resonant gyroscope[J]. Application of Electronic Technique,,2021,,47(5):64-68,72.
Design of temperature control system of hemispherical resonant gyroscope
Qin Qin1,,Jiang Jingke1,,Chen Zhenyu1,Lv Qinyuan1,,Li Qiang2
1.Engineering Department of Shanghai Polytechnic University,,Shanghai 201209,China,; 2.Shanghai Synergy Technology Intelligence Co.,,Ltd.,Shanghai 201209,,China
Abstract: Thermal drift is a key factor in gyroscope precision. To ensure the output accuracy of the hemispherical resonant gyroscope, a temperature control system for the hemispherical resonant gyroscope has been designed in this article. It provides gyroscope with constant temperature to reduce the influence of temperature and inhibit the thermal drift. This system combines hardware design and software programming. The relay-type self-tuning PID control algorithm is applied so that the design of hemispherical resonant gyroscope temperature control system can be completed.An incubator and a control cabinet has been designed as hardware. A metal tray is placed in the incubator to hold the hemispherical resonant gyroscope. Oil circulate system and data acquisition equipment in the control cabinet play the role of heating, cooling and data acquiring. From the aspect of software, the whole system is programmed by LabVIEW, a visual interface is also developed in the master. The experimental results show that the temperature control system can achieve the expected design effect, and the temperature control accuracy can reach±0.05 ℃.
Key words : thermal drift,;hemispherical resonant gyroscope;PID,;relay feedback method;self-tuning parameter

0 引言

    半球諧振陀螺儀(HRG)是利用哥式效應(yīng)工作的諧振式慣性敏感器件,,它不具備傳統(tǒng)陀螺儀的活動支撐和轉(zhuǎn)子,而是采用半球諧振子來替代轉(zhuǎn)動部件,,所以具有精度高,、功率低、啟動快,、可靠性高,、壽命長等特點(diǎn),。如今,國內(nèi)外半球諧振陀螺已經(jīng)作為產(chǎn)品在導(dǎo)航系統(tǒng),、宇宙飛船,、空間望遠(yuǎn)鏡、衛(wèi)星探測等空間領(lǐng)域和軍事戰(zhàn)爭領(lǐng)域上得到廣泛應(yīng)用[1-2],。

    半球諧振子是半球諧振陀螺儀的核心部件,,它是一個半球形的薄殼彈性體,并且?guī)в兄行闹螚U,,支撐桿是與半球形薄殼一體加工而成的,。國內(nèi)外所研制的半球諧振子,其材料大多為熔融的石英晶體,直徑一般為15~60 mm,,壁厚一般為0.3~1.0 mm,。半球諧振子石英晶體材料的密度、泊松比,、彈性模量,、膜層應(yīng)力及半球諧振子球面半徑和厚度等受溫度變化的影響較大。溫度的變化會導(dǎo)致半球諧振子物理參數(shù)發(fā)生變化,,半球諧振子參數(shù)的變化會造成諧振子固有頻率的變化及半球諧振陀螺儀的時間常數(shù)差異,,致使半球諧振陀螺儀在使用時出現(xiàn)漂移現(xiàn)象[3]




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作者信息:

秦  琴1,,姜景科1,,陳振宇1,呂沁元1,,李  強(qiáng)2

(1.上海第二工業(yè)大學(xué) 工學(xué)部,,上海201209;2.上海思晉智能科技有限公司,,上海201209)

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