Didace Habineza

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This paper is concerned with multivariable coupled hysteretic systems. The traditional Bouc-Wen monovariable hysteresis model devoted to one degrees of freedom (DoF) actuated systems is extended to model the hysteresis in systems with multiple DoF which typify strong cross-couplings. The proposed approach is able to model and to compensate for known(More)
In the literature, the generalized Bouc-Wen model can track precisely asymmetric hysteresis nonlinearity. In this paper, we propose to extend this generalized model to multivariable hysteresis model that can track the nonlinearities in multi-degrees of freedom (multi-DoF) hysteretic actuated systems. In particular, these systems are typified by strong(More)
This paper deals with the characterization, the modeling and the closedloop control of multivariable piezoelectric actuators, with an application to a 3-DOF piezoelectric tube scanner, widely used in precise positioning. These actuators are typified by hysteresis and creep nonlinearities, badly damped oscillation and strong couplings between their axis.(More)
This paper deals with the modeling, identification and feedforward control of hysteresis found in multi-degrees of freedom (DOF) piezoelectric actuators. One main characteristic of the considered hysteresis behavior is the strong couplings. To express such multivariable hysteresis, we propose to extend the previous Bouc-Wen hysteresis monovariable model(More)
This paper deals with the control of the piezoelectric tube in the presence of the variation of the temperature. Besides the hysteresis and the creep nonlinearities, and the badly-damped oscillations, the piezoelectric tube is highly-sensitive to the variation of the temperature. This variation impacts considerably the global model of the actuator and(More)
We propose in this paper the characterization of a new generation of piezoelectric cantilevers called thick-films piezoelectric actuators. Based on the bonding and thinning process of a bulk PZT layer onto a silicon layer, these cantilevers can provide better static and dynamic performances compared to traditional piezocantilevers, additionally to the small(More)
The present paper deals with the motion control of a piezoelectric cantilevered actuator for different frequencies regimes. The motion behavior of the piezoelectric cantilever is affected by two main parasitic effects, the hysteresis and creep effects, which are considered as a generalized disturbance. Additionally, cantilevers’s position is the only(More)
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