Identification and Compensation of Hysteresis Using Discrete Backlash Operator

In this article, I would like to present about 'A Discrete Backlash Operator for Identification and Compensation of Hysteresis and Non-linearity for Piezoelectric Actuator' and its practical implementation in MatLab and LabView. The authors, Yan Naing Aye and Ang Wei Tech, are with School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798. yan9aye@gmail.com, WTAng@ntu.edu.sg .

The paper in PDF format and the implemented code in MatLab and LabVIEW are available at

https://yan9a.github.io/DiscreteBacklashOperator/yan-naing-aye-wytu-icstsd-2018.pdf

and

https://github.com/yan9a/DiscreteBacklashOperator

Abstract

A new invertible digitized model called Discrete Backlash Operator is proposed to model complex hysteretic nonlinearities. A discrete backlash operator is formed by combining multiple elementary virtual gears called discrete backlash gears. A discrete backlash operator with n discrete backlash gears has 2 power n possible states. The inverse model of discrete backlash operator is also developed for a feedforward controller to control the piezoelectric actuator.