Huang Fajun, Wan Qiuhua, Yang Shouwang, Zhao Changhai, Yu Hai. Method of velocity measurement based on Moiréfringe and nonlinear tracking differentiator[J]. Infrared and Laser Engineering, 2014, 43(6): 1930-1935.
Citation:
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Huang Fajun, Wan Qiuhua, Yang Shouwang, Zhao Changhai, Yu Hai. Method of velocity measurement based on Moiréfringe and nonlinear tracking differentiator[J]. Infrared and Laser Engineering, 2014, 43(6): 1930-1935.
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Method of velocity measurement based on Moiréfringe and nonlinear tracking differentiator
- 1.
Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China;
- 2.
University of Chinese Academy of Sciences,Beijing 100049,China
- Received Date: 2013-10-11
- Rev Recd Date:
2013-11-08
- Publish Date:
2014-06-25
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Abstract
In order to realize velocity and acceleration measurement at low speed, a new type method of velocity measurement at low speed was designed which is based on the method of Moirfringe and nonlinear tracking differentiator. First of all, the electric signal of Moirfringe was analyzed. Then the electric signal from photoelectric encoder was filtered by nonlinear tracking differentiator and the phase delays were compensated. Finally, velocity and acceleration measurement was realized by using cascaded nonlinear tracking differentiators. The test proves that the stationarity and precision of velocity measurement at low speed are improved, as well as the sampling frequency. The method was applied in a system with a 21-bit encoder as the angle sensor, and velocity and acceleration could be measured. When the speed is 0.001 7()/s and sampling time is 5 ms, sampling numbers is 20 times than that of ordinary methods. The real-time performance, stationarity and precision of velocity measurement at low speed can be improved by using the method.
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References
[1]
|
|
[2]
|
Ohnishi K, Shibata M, Murakami T. Motion control for advanced mechatronics[J]. IEEE/ASME Trans Mechatronics, 1996, 1(1): 56-97. |
[3]
|
|
[4]
|
Bernstein N L, Lawrence D A, Pao L Y. Friction modeling and compensation for haptic interfaces[C]//Proceedings of the First Joint Eurohaptics Conference and Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems, 2005: 290-295. |
[5]
|
|
[6]
|
Yu Hai, Wan Qiuhua, Yang Shouwang, et al. Dynamic error acquisition system of absolute optical encoder[J]. Infrared and Laser Engineering, 2013, 42 (7): 1809-1814. ( in Chinese) |
[7]
|
Zhao Yan. The research of velocity measurement with encoder[D]. Beijing: University of Chinese Academy of Sciences, 2003: 1-6. (in Chinese) |
[8]
|
|
[9]
|
|
[10]
|
Brown R H, Schneider S C, Mulligan M G. Analysis of algorithms for velocity estimation from discrete position versus time data[J]. IEEE Transaction on Industrial Electronics, 1992, 39(1): 11-19. |
[11]
|
Qin Jirong, Shen Anjun. Contemporary DC Servo Controls Technology and Its System Design[M]. Beijing: China Machine Press, 1991. (in Chinese) |
[12]
|
|
[13]
|
Simon E. Implementation of a speed field oriented control of 3-phase PWSM motor using TMS320F240[J]. Texas Instrument, 1999: 6-40. |
[14]
|
|
[15]
|
|
[16]
|
Liu Yili, Liu Haixia. A new method of high speed and continuous measurement of frequency[J]. Electronic Measurement Technology, 1999, 5: 19-24. (in Chinese) |
[17]
|
|
[18]
|
Ai Chenguang, Chu Ming, Sun Hanxu, et al. Eccentric testing of benchmark circular grating and compensation of angular error[J]. Optics and Precision Engineering, 2012, 20(11): 2479-2484. (in Chinese) |
[19]
|
Wang Xianjun. Errors and precision analysis of subdivision signals for photoelectric angle encoder[J]. Optics and Precision Engineering, 2012, 20(11): 2479-2484. (in Chinese) |
[20]
|
|
[21]
|
|
[22]
|
Meng Zhong, Zhang Tao, Zheng Xiujun. Application of real time polynomial fitting based on orthogonal basis function algorithm to encoder rate measurement[J]. Optics and Precision Engineering, 2006, 14(2): 303-307. (in Chinese) |
[23]
|
|
[24]
|
Wu Hongsheng, Zeng Qifeng, Qiao Dong, et al. Filtering method of improving quality of grating Moirfringe[J]. Optics and Precision Engineering, 2011, 19(8): 1944-1949. (in Chinese) |
[25]
|
Han Jinqing. Nonlinear tracking-differentiator[J]. J Sys Sci and Math Scis, 1994, 14(2): 176-183. (in Chinese) |
[26]
|
|
[27]
|
Han Jingqing, Yuan Lulin. The discrete form of tracking-differentiator[J]. Journal of Systems Science and Mathematical Sciences, 1997, 19(3): 268-173. (in Chinese) |
[28]
|
|
[29]
|
Wu Liqiang, Lin hao, Han Jinqing. Study of tracking differentiator on filtering[J]. Journal of System Simulation, 2004, 16(4): 651-652. (in Chinese) |
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