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On the Use of a Digital Communication Channel for Feedback in a Position Control System

Bhattarai, Kripesh
http://rave.ohiolink.edu/etdc/view?acc_num=akron1353512595

Abstract Details

2012, Master of Science, University of Akron, Electrical Engineering.
This thesis presents a study to understand how the features of the communication protocol used to transmit feedback information on a discrete-time position control system feedback channel affect the overall quality of control. The features of several industrial standards for the transmission of feedback position information by absolute position encoders in a position control system have been identified. The communication channel used to feed back digital position information and the identified parameters are modeled and simulated to determine how the communications affects the performance of the control system, especially while communicating via long cables in the presence of noise. So, a framework has been developed in order to simulate combined operation of the communication channel and the control system. In this work, a series of simulations are performed for an example scenario of a blade pitch position control in a wind turbine. The quality of control is studied for this application when various error checking strategies are used, in systems with different cable lengths and different levels of noise. The results show that for systems communicating via longer cables, error checking is essential to achieve a high quality of control. For control systems that require fast sampling, a trade-off must be made between the bit rate, which determines the sample rate, and the degree of error checking. Recommendations for choosing which features to use are made based on the expected level of noise and cable length.
Joan E. Carletta, Dr. (Advisor)
Kye-Shin Lee, Dr. (Advisor)
Robert J. Veillette, Dr. (Committee Member)
100 p.
Electrical Engineering
control; communication; wind turbine; blade pitch; feedback; encoder

Recommended Citations

Citations

  • Bhattarai, K. (2012). On the Use of a Digital Communication Channel for Feedback in a Position Control System [Master's thesis, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1353512595

    APA Style (7th edition)

  • Bhattarai, Kripesh. On the Use of a Digital Communication Channel for Feedback in a Position Control System. 2012. University of Akron, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron1353512595.

    MLA Style (8th edition)

  • Bhattarai, Kripesh. "On the Use of a Digital Communication Channel for Feedback in a Position Control System." Master's thesis, University of Akron, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=akron1353512595

    Chicago Manual of Style (17th edition)

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© 2012, all rights reserved.
This open access ETD is published by University of Akron and OhioLINK.