Research on combined precision angle measurement theory of optical rotation platform

被引：0

作者：

Yuan, Hui ^{[1
,2
]}

Liu, Zhao-Hui ^{[1
]}

Liang, Dong-Sheng ^{[1
,2
]}

Liu, Fu-Cheng ^{[1
,2
]}

Dong, Qiang ^{[1
,2
]}

机构：

[1] Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an

[2] University of Chinese Academy of Sciences, Beijing

来源：

Guangzi Xuebao/Acta Photonica Sinica | 2014年 / 43卷 / 11期

关键词：

Angle measurement; Angular encoders; Angular velocity; Fiber optic gyroscope; Turntable;

D O I：

10.3788/gzxb20144311.1112003

中图分类号：

学科分类号：

摘要：

As the conventional angular measuring system which uses rotary encoders has the shortcomings of low resolution, large quantization noise and low angular velocity accuracy, a sensor fusion angle measurement method based on fiber optic gyroscope and rotary encoder was proposed. First, the encoder angle signal and the fiber optic gyro rate integration value were subtracted in a sliding window, and the rate drift of fiber optic gyroscope was estimated utilize least square method from the deviation signal. Secondly, the angle was estimated using the compensated angular velocity signal and the encoder signal through a certain combination algorithm. Finally, mathematical simulation and experimental verification were conducted for the proposed method. The results show that the simulation value and experimental value of angle measurement accuracy are improved from 1.2″ and 1.1″ to 0.17″ and 0.76″, respectively. The angular velocity measurement accuracy are also improved from 0.002°·s-1 to 0.001°·s-1. The proposed methed effectively improves the angle and angular velocity measurement accuracy, while avoiding the rate drift problem of fiber optic gyroscope. ©, 2014, Chinese Optical Society. All right reserved.

引用

共 11 条

[1]

Chang C., Hu Y., Dong B., Investigation and application of photoelectric revolving encoder, Instrument Technique and Sensor, 12, pp. 34-35, (2001)

[2]

Kubus D., Wahl F., A sensor fusion approach to angle and angular rate estimation, 2011 IEEE/RSJ International Conference on Intelligent Robots and Systems, pp. 2481-2488, (2011)

[3]

Li Y.-G., Ding J.-W., Liu Z.-Y., Et al., Analysis of transmission modes and its transmission precision of photoelectric encoder, Infrared and Laser Engineering, 42, 11, pp. 3008-3012, (2013)

[4]

Huang F.-J., Wan Q.-H., Yang S.-W., Et al., Current situation and trend of velocity measurement with photoelectric shaft encoder, Laser & Optoelectronics Progress, 50, (2013)

[5]

Tang T.-J., Cao X.-Q., Lin B., Developing current situation and the trend of photoelectric-angular encoder, Optical Instruments, 27, 1, pp. 90-95, (2005)

[6]

Pavlath G.A., Fiber optic gyros past, present, and future, SPIE, pp. 1-10, (2012)

[7]

Zhu W.H., Lamarche T., Velocity estimation by using position and acceleration sensors, IEEE Transactions on Industrial Electronics, 54, 5, pp. 2706-2715, (2007)

[8]

Jeon S., State estimation based on kinematic models considering characteristics of sensors, Proceedings of the American Control Conference, pp. 640-645, (2010)

[9]

Lee S., Ortiz G.G., Alexander J.W., Star tracker-based acquisition, tracking, and pointing technology for deep-space optical communications, Inter Planetary Network Progress Report, pp. 42-161, (2005)

[10]

Kaufmann J., Hakimi F., Boroson D., Using a low-noise interferometric fiberoptic gyro in a pointing, acquisition, and tracking system, SPIE, 8610, (2013)

← 1 2 →