Abstract

In the traditional food transportation tracking loop, the loop gain is generally constant. In order to release the limitation, the adjustment on the optimal loop bandwidth can be applied to achieve high precision food transportation tracking. Aiming at shortening the lock-time of traditional algorithm, this study designed an optimal loop gain algorithm for food transportation tracking loop. By analyzing the loop transient response, the optimal loop gain is designed based on the least lock-time criteria. Since it is unable directly to obtain the numerical solution of the loop gain, a modeling method is developed based on piecewise cubic Hermite interpolation polynomial, in order to achieve the optimal loop gain design in loop under acceptable frequency error. Simulation results show that the proposed algorithm can speed up the loop lock-time. Compared with the constant-gain loop, when the frequency error is 30 Hz, the lock-time of the proposed optimal gain loop is improved at least 46.7%.

Keywords:

Food transportation, hermite interpolation, the optimal loop,

References

1. Bi, Y.B., R.G. Yao and L. Wang, 2013. Adaptive noise bandwidth based food transportation tracking loop method in navigation receivers. Proceeding of 22nd Chongqing Wireless and Optical Communication Conference (WOCC, 2013), China.
   
2. Gao, S.H., L. Zhao and J.C. Ding, 2011. High dynamic GPS food transportation tracking loop design utilizing PID. J. Chinese Inertial Technol., 01: 55-58.
   
3. Ji, X.C., X.L. Wang and Y.F. Li, 2013. Error analysis and optimal bandwidth design for SINS-aided GPS food transportation tracking loop. J. Beijing Univ., Aeronaut. Astronaut., 07: 932-936.
   
4. Jie, Y., W. Xinlong and J. Jiaxing, 2010. Design and analysis for an innovative scheme of SINS/GPS ultra-tight integration. Aircr. Eng. Aerosp. Tec., 82(1): 4-14.
   CrossRef    
5. Li, C.J. and S.X. Yang, 2012. Optimization of the food transportation tracking loop for GPS high dynamic receivers. J. Beijing Inst. Technol., 21(2): 164-171.
   
6. Razavi, A., D. Gebre-Egziabher and D.M. Akos, 2008. Loop architectures for food transportation tracking weak GPS signals. Aerospace Electr. Syst., 44(2): 697-710.
   CrossRef    
7. Tang, B., X.Q. Yu, X.R. Dong et al., 2007. Design intelligent food transportation tracking loop based on software GPS receiver. J. Beijing Univ., Aeronaut. Astronaut., 07: 807-810.
   
8. Wu, X.Y., J.Y. Li, Q.T. Gu et al., 2011. Modeling of digital food transportation tracking loop for GNSS receiver. J. Astronaut., 06: 1292-1297.
   
9. Zhang, J.B., S.F. Zhang, Q. Hu, Y. Jiang and X.W. Sun, 2012. Research on adaptive adjustment of loop gain in GNSS carrier loop. Chinese J. Sci. Instrum., 02: 293-299.
   

Competing interests

The authors have no competing interests.

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