NDLI: Robust and fast non-singular terminal sliding mode control for piezoelectric actuators

Content Provider	IET Digital Library
Author	Ghanimi, Ali Al Zheng, Jinchuan Man, Zhihong
Abstract	Piezoelectric actuators (PEAs) are essential elements in many systems that require high precision and accuracy. However, the difficulty with the use of PEAs is their actuator uncertainties including the highly non-linear behaviour which is a consequence of the hysteresis property inherently within PEAs. Therefore, a robust control system is essential for such actuators. This study proposes a systematic control method that utilises a fast non-singular terminal sliding mode (FNTSM) for PEAs. Unlike the conventional sliding mode (CSM), the FNTSM control method is characterised by chatter free. Besides, a zero error convergence can be guaranteed in finite time in the presence of disturbance and system uncertainties. The design of the FNTSM control is based on the bounded information of parametric uncertainties. The feedback velocity is provided for the FNTSM controller by using the a model-free velocity estimator. Theoretical analysis and experimental results reveal that the FNTSM controller can achieve faster and higher precision performance in comparison with either a CSM or a linear controller.
Starting Page	2678
Ending Page	2687
Page Count	10
ISSN	17518644
Volume Number	9
e-ISSN	17518652
Issue Number	Issue 18, Dec (2015)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-cta/9/18
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-cta.2015.0401
Journal	IET Control Theory & Applications
Publisher Date	2015-12-10
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Actuator Uncertainties Conventional Sliding Mode CSM Fast Nonsingular Terminal Sliding Mode Control Finite Time FNTSM Control Method Hysteresis Property Linear Controller Linear System Microactuators Model-free Velocity Estimator Multivariable Control System Nonlinear Behaviour Nonlinear Control System Parametric Uncertainty PEA Piezoelectric Actuators Robust Control Robust Control System Stability in Control Theory Systematic Control Method Uncertain System Variable Structure System Zero Error Convergence
Content Type	Text
Resource Type	Article
Subject	Control and Optimization Control and Systems Engineering Human-Computer Interaction Electrical and Electronic Engineering Computer Science Applications

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