Title page for ETD etd-120399-095822
|Type of Document
||Galinaitis, William S.
|Author's Email Address
||Two Methods for Modeling Scalar Hysteresis and their use in Controlling Actuators with Hysteresis
|Rogers, Robert C.
|Ball, Joseph A.
|Inman, Daniel J.
|Kohler, Werner E.
|Wheeler, Robert L.
|Date of Defense
The accurate control of a positioning system that exhibits scalar
hysteresis requires a control strategy that incorporates compensation
for the hysteresis. One approach is to develop a compensator based on
an inverse hysteresis operator. This method uses an open loop control
in which the inverse operation adjusts the actuator input to
compensate for the hysteresis in the system. When this is
accomplished, the composite operation produces a linear
relationship between a reference input and the system output.
The difficulty of this method lies in developing an accurate
model of the hysteresis for which an inverse operator can be obtained.
In this work, a system with hysteresis is modeled by a generic model
based on a Preisach type operator. First, it is shown that the operator has
an inverse and that both have approximations that are convergent. Then,
simulation and experimental data are used to demonstrate the ability
of the operator to accurately model a hysteresis relationship. This
lays the foundation for then demonstrating the concept of inverse
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