Synthesis of PID controller from empirical data and guaranteeing performance specifications /
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[College Station, Tex.] :
[Texas A&M University],
[2010]
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| Online Access: | Link to OAK Trust copy |
| Abstract: | For a long time determining the stability issue of characteristic polynomials has played a very important role in Control System Engineering. This thesis addresses the traditional control issues such as stabilizing a system with any certain controller analyzing characteristic polynomial, yet a new perspective to solve them. Particularly, in this thesis, Proportional-Integral-Derivative (PID) controller is considered for a fixed structured controller. This research aims to attain controller gain set satisfying given performance specifications, not from the exact mathematical model, but from the empirical data of the system. Therefore, instead of a characteristic polynomial equation, a specially formulated characteristic rational function is investigated for the stability of the system in order to use only the frequency data of the plant. Because the performance satisfaction is highly focused on, the characteristic rational function for the investigation of the stability is mainly dealt with the complex coefficient polynomial case rather than real one through whole chapters, and the mathematical basis for the complex case is prepared. For the performance specifications, phase margin is considered first since it is a very significant factor to examine the system's nominal stability extent (nominal performance). Second, satisfying H [infinity] norm constraints is handled to make a more robust closed loop feedback control system. Third, we assume undefined, but bounded outside noise, exists when estimating the system's frequency data. While considering these uncertainties, a robust control system which meets a given phase margin performance, is attained finally (robust performance).In this thesis, the way is explained how the entire PID controller gain sets satisfying the given performances mentioned in the above are obtained. The approach fully makes use of the calculating software e.g. MATLAB® in this research and is developed in a systematically and automatically computational aspect. The result of synthesizing PID controller is visualized through the graphic user interface of a computer. |
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| Item Description: | "Major Subject: Mechanical Engineering" Title from author supplied metadata (automated record created 2010-03-12 12:08:51). Electronic resource. |
| Physical Description: | 1 online resource. |
| Bibliography: | Includes bibliographical references. |