A Direct Inverse Model for Hysteresis Compensation

The feedforward inverse compensation is a typical approach to compensate for the hysteresis nonlinearity in smart materials based actuators, which often requires to develop a hysteresis model first and to compute the parameters of the inverse compensator based on the hysteresis model. Different from...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2021-05, Vol.68 (5), p.4173-4181
Main Authors: Li, Zhi, Shan, Jinjun, Gabbert, Ulrich
Format: Article
Language:English
Subjects:
Actuators
Compensation
Computational modeling
Direct inverse model (DIM)
Hysteresis
Hysteresis models
hysteresis nonlinearity
inverse compensation
Inverse problems
Mathematical models
Numerical models
Operators
Parameter identification
piezoelectric actuator
Piezoelectric actuators
Preisach model
Relay
Relays
Smart materials
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Summary:The feedforward inverse compensation is a typical approach to compensate for the hysteresis nonlinearity in smart materials based actuators, which often requires to develop a hysteresis model first and to compute the parameters of the inverse compensator based on the hysteresis model. Different from the above method, a direct inverse model (DIM) constructed by newly proposed clockwise relay operators is developed in this article. The direct inverse modeling approach is free from constructing the inverse compensator, and can be directly used as the inverse compensator. The parameters of DIM can be obtained via the model identification using the experimental data. In order to facilitate the numerical implementation and reduce the model complexity of DIM, a QR factorization based selection mechanism is employed to select the dominant clockwise relay operators. The reduced DIM is capable of preserving the accuracy of the full DIM. The simulation study and experiments are conducted to validate the effectiveness of the developed compensation approach.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2020.2984452