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ROBUST STABILITY ANALYSIS OF SERVO-HYDRAULIC SYSTEM IN PARAMETER SPACE

KOWTA, SRINIVAS
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1060970575

Abstract Details

2003, MS, University of Cincinnati, Engineering : Mechanical Engineering.
Hydraulic power systems find a wide range of applications varying from high power transmission as in heavy machinery to accurate control as in robotics and flight control actuators, and in mobile systems like agricultural machines. Hydraulic systems have many advantages. They have a high power to weight ratio and the system can be controlled electronically. Therefore they are flexible and are efficient in transferring and controlling power. Hydraulic systems are highly nonlinear in nature and exhibit dynamic fluctuations in parameters such as pressure and velocity. These effects, if not controlled, would lead to large scale oscillations that would damage system components. This work is focused on the robust parametric stability analysis a servo-hydraulic system in two-parameter space. A higher order linear controller and a nonlinear controller using feedback linearization technique are designed. State and input/output transformation were used to reduce the order of the inner-loop feedback linearized plant. In this thesis, the stable-unstable boundary for two-parameter variations is obtained by non-linear analysis and is verified by experimentation. These stability boundaries are used as a tool to study the robustness of the system by measure of distance to instability from the nominal parameters. The control strategies were implemented using Matlab/Simulink and the real time control was implemented using WinCon software developed by Quanser.
Dr. David F. Thompson (Advisor)
100 p.
Engineering, Mechanical
HYDRAULIC CONTROL; MODELLING AND VALIDATION; LINEAR AND NON-LINEAR CONTROLLERS; TWO PARAMETER STABILITY ANALYSIS

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Citations

  • KOWTA, S. (2003). ROBUST STABILITY ANALYSIS OF SERVO-HYDRAULIC SYSTEM IN PARAMETER SPACE [Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1060970575

    APA Style (7th edition)

  • KOWTA, SRINIVAS. ROBUST STABILITY ANALYSIS OF SERVO-HYDRAULIC SYSTEM IN PARAMETER SPACE. 2003. University of Cincinnati, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1060970575.

    MLA Style (8th edition)

  • KOWTA, SRINIVAS. "ROBUST STABILITY ANALYSIS OF SERVO-HYDRAULIC SYSTEM IN PARAMETER SPACE." Master's thesis, University of Cincinnati, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1060970575

    Chicago Manual of Style (17th edition)

ucin1060970575
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© 2003, all rights reserved.
This open access ETD is published by University of Cincinnati and OhioLINK.