17 April 2007 Efficient inverse compensation for hysteresis via homogenized energy models
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Abstract
Ferroelectric and magnetic transducers are utilized in large number of applications, including nanopositioning, fluid pumps, high-speed milling, and vibration control/suppression. However, the physical mechanisms which make these materials highly effective transducers inherently introduce nonlinear, hysteretic behavior that must be incorporated in models and control designs. This significantly complicates control designs and limits the effectiveness of linear control algorithms when directly applied to the system. One solution is to employ an exact or approximate inverse model which converts a desired output to the corresponding input. This alleviates the complex input-output relation, allowing a linear control to be applied. Linearization of the actuator dynamics in this manner permits subsequent use of linear control designs to achieve high accuracy, high speed tracking as well as vibration attenuation and positioning objectives.
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Thomas R. Braun, Ralph C. Smith, "Efficient inverse compensation for hysteresis via homogenized energy models", Proc. SPIE 6526, Behavior and Mechanics of Multifunctional and Composite Materials 2007, 65261A (17 April 2007); doi: 10.1117/12.715648; https://doi.org/10.1117/12.715648
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KEYWORDS
Polarization

Actuators

Transducers

Magnetism

Tolerancing

Ferromagnetics

Instrument modeling

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