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Stability Analysis and Design of Servo-Hydraulic Systems
Shukla, Amit

2002, PhD, University of Cincinnati, Engineering : Mechanical Engineering.
Design for robust stability is one of the most important issues in nonlinear systems theory. The validity of linear system design in a small neighborhood is not a sufficient criterion for systems that undergo parametric variations and have strong nonlinear characteristics. With rapid growth in the systems theory, the design of nonlinear systems using bifurcation theory-based procedures has been one of the key developments. Servo-hydraulic systems are one of the most commonly used actuation and control devices, due to their force to weight ratio. They also are highly nonlinear in nature and hence provide considerable difficulty in the design and analysis of these systems and their control algorithms.The goal of this dissertation is to tackle some of the issues of the nonlinear systems theory with applications to servo-hydraulic systems. The use of bifurcation theory for the design and analysis of a nonlinear system is illustrated, and a detailed investigation into the dynamics associated with the servo-hydraulic systems is done. Further, the model decomposition/reduction strategy for parametric study in the nonlinear system is suggested. The idea of control-induced bifurcation is introduced and explained in light of servo-hydraulic systems. The servo-hydraulic system nonlinearities are explained and their effects on the robust stability are highlighted. This numerical work is also complemented with the experimental results on the servo-hydraulic circuits. This general procedure for robust stability design and control design, under the influence of nonlinearities, presented in this work can be used for any nonlinear system. The limitations of bifurcation theory based tools are also highlighted.
Dr. D. Thompson (Advisor)
208 p.

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Shukla, A. (2002). Stability Analysis and Design of Servo-Hydraulic Systems. (Electronic Thesis or Dissertation). Retrieved from https://etd.ohiolink.edu/

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Shukla, Amit. "Stability Analysis and Design of Servo-Hydraulic Systems." Electronic Thesis or Dissertation. University of Cincinnati, 2002. OhioLINK Electronic Theses and Dissertations Center. 03 Aug 2015.

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Shukla, Amit "Stability Analysis and Design of Servo-Hydraulic Systems." Electronic Thesis or Dissertation. University of Cincinnati, 2002. https://etd.ohiolink.edu/

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