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Piezoelectric actuators (PEAs) are widely used in active vibration control engineering. Dynamic hysteresis nonlinearities existing in the PEAs reduce the control accuracy. Using accelerometers for vibration control makes dynamic hysteresis modeling more challenging. In this study, a Hammerstein dynamic hysteresis model for a PEA is proposed based on the acceleration signal. Then, a hysteresis inverse...
The inherent rate-dependent hysteresis in smart actuators hinders their wider applicability in practical engineeering. In this paper, based on the rate-dependent Hammerstein model, a 2 DOF control scheme with a robust controller combined with a hysteresis compensator is proposed for tracking control of smart actuators. The hysteresis compensator is first connected in cascade with an actuator to cancel...
A Hammerstein Model based on neural networks is proposed for piezoelectric actuators (PEA) hysteresis dynamics. An elementary hysteresis operator is constructed to describe the hysteresis information, which is used with a Neural Network to represent the static nonlinear part of the PEA. An Autoregressive Model with Exogenous Input model is used to model the rate-dependent properties of the actuator...
Piezoelectric actuator has been frequently utilized in the micromanipulation control. However, the rate-dependent hysteresis properties in the actuator affect severely the high precision tracking control. In this study, a Hammerstein-based model with Bouc-Wen hysteresis nonlinearity is proposed to describe the dynamic characteristics of rate-dependent hysteresis in a piezoelectric actuator. The Bouc-Wen...
In this brief, a new Hammerstein model is proposed for a rate-dependent hysteresis in giant magnetostrictive actuators (GMAs). A Preisach operator and an autoregressive model with exogenous input are used to represent, respectively, the static nonlinear function and the linear dynamic subsystem of this model. It is shown that the proposed model can satisfactorily describe the hysteresis of a GMA within...
In this paper, a Hammerstein model with Preisach operator is proposed to model the rate-dependent hysteresis nonlinearity of a Giant Magnetostrictive Actuator (GMA). The Preisach operator is used to represent the nonlinear block of this model. The model's validity is verified by experimental data. Based on this model, a PID feedback controller combined with an inverse compensation in the feed-forward...
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