| 陀螺灵敏部运动轨迹参数测定 |
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| 引用本文： | 苏广利,周晓光,张学庄,王爱公.陀螺灵敏部运动轨迹参数测定[J].测绘工程,2016,25(5):36-41. |
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| 作者姓名： | 苏广利 周晓光 张学庄 王爱公 |
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| 作者单位： | 中南大学 地球科学与信息物理学院,湖南 长沙,410083;中南大学 地球科学与信息物理学院,湖南 长沙,410083;中南大学 地球科学与信息物理学院,湖南 长沙,410083;中南大学 地球科学与信息物理学院,湖南 长沙,410083 |
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| 基金项目： | 国家自然科学基金资助项目(41440029)；湖南省科技厅自主创新重点项目(2012 T T 1005) |
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| 摘 要： | 高精度悬挂式陀螺仪在研制、生产和调试中仍存在无法精确测定和调整陀螺惯性灵敏部静平衡残余量的问题,研究发现含有静平衡残余量和静平衡状态良好的陀螺运动轨迹存在明显的差异,因此精确测定陀螺灵敏部运动轨迹参数可为精确测定陀螺灵敏部静平衡残余量提供有效途径。文中研制利用激光、高清相机、显微放大镜头等部件,结合计算机视觉和图像处理等方法,采用质心跟踪的方式精确测定陀螺灵敏部摆动(未启动马达)轨迹的装置;利用最小二乘方法拟合陀螺摆动轨迹,推导求取陀螺摆动周期、振幅、衰减系数、摆动中心、抖动振幅等参数的方法。最后用文中装置测定JT15陀螺悬挂系统在未启动马达下的运动轨迹参数,验证装置与方法的有效性。
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| 关 键 词： | 陀螺 灵敏部 运动轨迹 质心跟踪 轨迹参数 |
Parameters determination of gyro inertial sensitive trajectory |
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| SU Guangli,ZHOU Xiaoguang,ZHANG Xuezhuang,WANG Aigong.Parameters determination of gyro inertial sensitive trajectory[J].Engineering of Surveying and Mapping,2016,25(5):36-41. |
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| Authors: | SU Guangli ZHOU Xiaoguang ZHANG Xuezhuang WANG Aigong |
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| Abstract: | The remains of the static balance of suspension system affect the orientation precision and stability of the gyro .But the remains of the static balance of suspension system of high precision gyro still can not be determinated .The paper finds that there is obvious difference between the trajectory of the gyro with big static balance residual and that of the better gyro .Therefore ,precisely measuring the trajectory of gyro suspension system may provide an effective way for measuring the parameter value of gyro static balance residual .In this paper ,one gyro trajectory tracking instrument is developed using a laser ,high‐resolution camera ,microscope lens ,etcs .The methods are used to get the trajectory parameters ,gyro swing ,swing period ,amplitude ,attenuation coefficient ,the swing center and jitter amplitude ,deduced with the least square fitting method to calculate .In the end of this paper ,the trajectory parameters of JT15 gyro suspension system without starter motor are measured using the trajectory tracking instrument developed by the authors accurately .T he results verifiy that the device and the method are effective . |
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| Keywords: | gyro sensitive department trajectory gyro trajectory tracking instrument centroid tracking trajectory parameters |
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