The development of a simple control system to correct backlash
Author(s)
Lustrino, Michelle E. (Michelle Elizabeth)
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Massachusetts Institute of Technology. Dept. of Mechanical Engineering.
Advisor
David E. Hardt.
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The control of systems that exhibit backlash has historically been a challenge. In these systems, there are essentially two steady state characteristic response curves separated by a deadband zone. This thesis work is motivated by the desire to accurately control the position of an actuator stem that reacts to the pressure placed on a corresponding diaphragm, which is critical to the temperature control system in a larger piece of machinery. An accurate system model is developed and a number of control methods are explored. The final control scheme is based on the full characterization of the pressure/position backlash curves and real-time pressure and position measurements. This method achieves steady state position response within 1.3% of the actuator's full travel..
Description
Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2009. Cataloged from PDF version of thesis. Includes bibliographical references (p. 28).
Date issued
2009Department
Massachusetts Institute of Technology. Department of Mechanical EngineeringPublisher
Massachusetts Institute of Technology
Keywords
Mechanical Engineering.