The development of a simple control system to correct backlash
Author(s)Lustrino, Michelle E. (Michelle Elizabeth)
Massachusetts Institute of Technology. Dept. of Mechanical Engineering.
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..
Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2009.Cataloged from PDF version of thesis.Includes bibliographical references (p. 28).
DepartmentMassachusetts Institute of Technology. Dept. of Mechanical Engineering.
Massachusetts Institute of Technology