1 research outputs found
Design and analysis of robust controllers for directional drilling tools
Directional drilling is a very important tool for the development of oil and gas deposits.
Attitude control which enables directional drilling for the efficient placement of the directional drilling tools in petroleum producing zones is reviewed along with the various
engineering requirements or constraints. This thesis explores a multivariable attitude governing plant model as formulated in Panchal et al. (2010) which is used for developing
robust control techniques. An inherent input and measurement delay which accounts for
the plant's dead-time is included in the design of the controllers. A Smith Predictor controller is developed for reducing the effect of this dead-time. The developed controllers
are compared for performance and robustness using structured singular value analysis and
also for their performance indicated by the transient response of the closed loop models. Results for the transient non-linear simulation of the proposed controllers are also
presented. The results obtained indicate that the objectives are satisfactorily achieved