32传感器与微系统(TransducerandMicrosystemTechnologies)2010年第29卷第12期陀螺电源对陀螺寻北结果的影响分析赵关蓉，赵东升，冯莉(天津大学精密测试技术及仪器国家重点实验室，天津300072)摘要：为了进一步提高陀螺仪的寻北精度，分析研究了陀螺电源的稳定性对寻北结果产生的影响。设计了一种基于TMS320F2407A的数字陀螺电源系统；建立了陀螺马达转速的稳定性影响陀螺寻北结果的理论模型；利用上述模型导出陀螺电源的输出电压和频率的变化影响寻北结果的计算公式；实验结果表明：当电源输出电压在34-36V之间变化时，寻北结果最大偏差12”，当电源输出电压低于34V时，寻北结果偏差大于l’，与理论计算的结果基本吻合，表明该电源满足陀螺仪的工作要求。关键词：数字陀螺电源；无阻尼；稳定性；寻北结果；数字信号处理器中图分类号：TP751文献标识码：A文章编号：1000-9787(2010)12-0032-03TheInfluenceofgyroscopicpoweronthenorth—·findingresultZHAOMei—rong，ZHAODong—sheng，FENGLi(StateKeyLaboratoryofPrecisionMeasurementTechnologyandInstruments，TianjinUniversity，Tianjin300072，China)Abstract：7theresearchoftheinfluenceofgyroscopepowerstabilityonthenorth—findingresultisstudied，inordertoimprovethegyroscopenorth—findingprecision．AdigitalACgyroscopepowersystemisdesignedbased()nthedigitalsignalprocessor(DSP)microprocessorofTMS320F2407A．Withoutconsideringotherinterferefactors，thetheoreticmodalandthecomputingequationofthestabilityinfluenceofgyroscopemotorrotationrateonthenorth—findingresultisdeducted．Andtheoutputvoltageandthefrequencyeffectonthenorth—seekingresult．Thentherelatedequationamongthenorth—findingresultandtheoutputvoltageandfrequencyisdeduced．Theexperimentalresuhshowthatthebiggestdeviationerrorofthenorth—findingresultis12’’whenthepoweroutputvoltagechangesbetween34Vand36V；andthedeviationerrorisbiggerthan17whenthepoweroutputvohageissmallerthan34V．Theresultmatchesthetheoreticalcalculationresult．andshowsthatthecharacteristicsofthedigitalgyroscopepowersatisfythegyroscopedemand．Keywords：digitalgyroscopepower；undamped；stability；north—findingresult；digitalsignalprocessor(DSP)0弓l言陀螺经纬仪因其定向精度...
