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Nguyen T.H.,Arts et Metiers ParisTech | Giraud-Audine C.,Arts et Metiers ParisTech | Lemaire-Semail B.,Laboratoire Delectrotechnique Et Delectronique Of Puissance Of Lille L2Ep | Abba G.,Laboratoire Of Conception | Bigot R.,Arts et Metiers ParisTech
IEEE Transactions on Industry Applications | Year: 2014

This paper presents the modeling of forging processes assisted by vibrations. A piezoelectric actuator is used to generate specific low-frequency vibration waveforms superimposed to the forging motion. Experimental results show a reduction of the forging load during upsetting tests. However, the appropriate waveforms and their influence on the forging load are still poorly understood. Moreover, the requirements of actuators and the design of the control should be known in advance. Therefore, there is a need for simulation to predict those issues. Due to the complexity of the interactions between the different components of the system, a complete model of the process is proposed. It is developed using an energetic macroscopic representation to preserve causality throughout the modeling. Simulation results are then compared with representative experimental results. © 2013 IEEE.


Grbovic P.J.,Huawei | Delarue P.,Laboratoire Delectrotechnique Et Delectronique Of Puissance Of Lille L2Ep | Le Moigne P.,Laboratoire Delectrotechnique Et Delectronique Of Puissance Of Lille L2Ep
2014 IEEE 15th Workshop on Control and Modeling for Power Electronics, COMPEL 2014 | Year: 2014

In this paper modeling and control aspects of a grid connected power conversion system and energy storage are presented and discussed in details. In comparison to the state of the art models, the model presented in this paper takes into account entire conversion system; variable speed drive converter, the interface dc-dc converter and the ultra-capacitor. Some simplifications of the model have been discussed too. A new control scheme is proposed is simple and easy to implement in comparison to state of the art solutions. The controllers design procedure has been described step by step. The proposed model and control algorithm have been verified by experiments on 5.5kW prototype. © 2014 IEEE.


Dai Z.,Laboratoire Delectrotechnique Et Delectronique Of Puissance Of Lille L2Ep | Giraud F.,Laboratoire Delectrotechnique Et Delectronique Of Puissance Of Lille L2Ep | Lemaire-Semail B.,Laboratoire Delectrotechnique Et Delectronique Of Puissance Of Lille L2Ep
European Journal of Electrical Engineering | Year: 2010

This article deals with modelling of a Traveling Wave Ultrasonic Motor with the aim of its command in force feedback application. A study of the non linear behavior leads to a new modelling of motor USR30, represented using causal ordering graphs. This simplified modelling gives results close to those observed during experimental runs. © 2010 Lavoisier, Paris.

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