陀螺电源对陀螺寻北结果的影响分析  

The Influence of gyroscopic power on the north-finding result

作　　者：赵美蓉[1] 赵东升[1] 冯莉[1] 

机构地区：[1]天津大学精密测试技术及仪器国家重点实验室,天津300072

出　　处：《传感器与微系统》2010年第12期32-34,共3页Transducer and Microsystem Technologies

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1’，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。The research of the influence of gyroscope power stability on the north-finding result is studied,in order to improve the gyroscope north-finding precision. A digital AC gyroscope power system is designed based on the digital signal processor（DSP） microprocessor of TMS320F2407A. Without considering other interrere factors, the theoretic model and the computing equation of the stability influence of gyroscope motor rotation rate on the northfinding result is deducted. And the output voltage and the frequency effect on the north-seeking result. Then the related equation among the north-finding result and the output voltage and frequency is deduced. The experimental result show that the biggest deviation error of the north-finding result is 12＂when the power output voltage changes between 34 V and 36 V;and the deviation error is bigger than l＇when the power output voltage is smaller than 34 V. The result matches the theoretical calculation result, and shows that the characteristics of the digital gyroscope power satisfy the gyroscope demand.

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 

分 类 号：TP751[自动化与计算机技术—检测技术与自动化装置]