A laboratory method for obtaining two degrees of freedom gyro-scopic stabilizer transfer function

 
 
 
  • Abstract
  • Keywords
  • References
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  • Abstract


    Obtaining transfer function of electrical, mechanical, etc. systems can provide this possibility for the researchers to investigate the behav-iours of desired systems based on different inputs in various working circumstances without need to laboratory equipment which it results in lower consumption of time and expense. The aim of current research is obtaining the existing gyroscopic stabilizer transfer function. The way we used in this article is the newest laboratory way for obtaining transfer function of gyroscopic stabilizers. This aim is achieved by using laboratory equipment such as a two degrees of freedom gyro stabilized platform that an imaging system is installed on it as the load, target simulator table with one degree of freedom, and electronic conversion board of RS488 to RS232 serial communication standard, etc. An input which excites all modes (search and track) of two degrees of freedom gyro stabilized platform is introduced to under test system and the system behaviour toward the introduced input is saved and finally the transfer function of existing two degrees of freedom gyro stabilized platform is obtained using system identification toolbox in MATLAB. At the end of this article, the step response of transfer function obtained through the desired experiment in the laboratory compared with the step response obtained through simulations that a %10 difference between them is observed.


  • Keywords


    Degree of Freedom; Gyro Stabilized Platform; Gyroscope; Transfer Function.

  • References


      [1] R. Salloum, B. Moaveni, M.R. Arvan, ”Robust position control design for an electromechanical actuator with time delay”, The 22nd Iranian Conf on Electrical Engineering (ICEE), Tehran, Iran, (2014), pp.1227-1232. http://dx.doi.org/10.1109/iraniancee.2014.6999722.

      [2] R. Salloum, M.R. Arvan, B. Moaveni, ”Robust Lead Compensator Design for an Electromechanical Actuator Based on H∞ Theory”, Automatic Control and Information Sciences, Vol. 2, No. 3, (2014), pp.53-58.

      [3] J. Fei, Y. Yang, ”Comparative study of system identification approaches for adaptive tracking of mems gyroscope”, Int. J. of Robotics and Automation, Vol. 27, No. 3, (2012), pp.1-8. http://dx.doi.org/10.2316/Journal.206.2012.3.206-3693.

      [4] M. Masten,”Inertially stabilized platforms for optical imaging systems tracking dynamic targets with mobile sensors”, IEEE Trans. Control Systems Magazine, Vol28, (2008), pp.47-65. http://dx.doi.org/10.1109/MCS.2007.910201.

      [5] J.M. Hilkert,”Inertially stabilized platform technology concepts and principles”, IEEE Trans. Control Systems Magazine, Vol28, (2008), pp.26-46. http://dx.doi.org/10.1109/MCS.2007.910256.

      [6] P.J. Kennedy, R.L. Kennedy, ”Direct versus indirect line of sight (LOS) stabilization”, IEEE Trans. Control Systems Technology, Vol11, (2003), pp.3-15. http://dx.doi.org/10.1109/TCST.2002.806443.

      [7] H. Khodadadi, M. Jahed Motlagh, M. Gorji, ”Robust control and modeling a 2-DOF inertial stabilized platform”, Int. Conf. on Electrical, Control and Computer Engineering, Pahang, Malaysia, (2011), pp. 223-228. http://dx.doi.org/10.1109/inecce.2011.5953880.

      [8] L. Shan-zhong, S. Long-he, ”Research on stabilizing and tracking control of electro-optical tracking and sighting platform based on fuzzy control”, Int. Conf on Measuring Technology and Mechatronics Automation, Changsha, China, (2010), pp.175-178.

      [9] M. Abdoa, A. Toloei, A. Vali, M.R. Arvan, ”Modeling, control and simulation of cascade control servo system for One axis gimbal mechanism”, Int. J. of Engineering, Vol27, (2014), pp.157-170. http://dx.doi.org/10.5829/idosi.ije.2014.27.01a.18.

      [10] W. Ji, Q. Li, B. Xu, J.j. Tu, D.a. Zhao, ”Cascade servo control for LOS stabilization of opto-electronic tracking platform design and self-tuning”, Int. Conf. on Information and Automation, Zhenjiang, China, (2009), pp.1034-1039. http://dx.doi.org/10.1109/icinfa.2009.5205070.

      [11] J. Eklånge,”Design and implementation of a test rig for a gyro stabilized camera system”, MSc, Linköping University, Linköping, Sweden, (2006).

      [12] L. Zhi-qiang, Z. Zhi-yong, Z. Qing-kun, F. Da-peng,”Parameter identification of inertially stabilized platforms using current command design”, Springer, Vol20, (2013), pp.342–353.


 

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Article ID: 6439
 
DOI: 10.14419/ijet.v5i4.6439




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