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Design of an active control of vibration in a centreless grinding machine: theoretical study and experimental implementation

The appearance of vibrations during centreless grinding process is one of the main factors limiting the current requirements of precision and productivity. This paper presents a novel procedure for the design of an active vibration reduction system in a centreless grinding machine using piezoelectric actuators. The different phases involved in the modelling procedure of the machine tool are explained, together with the followed approach to locate the actuators.

Taking as reference the finite element model of the machine, the most important mode shapes affecting the chatter behaviour have been considered to obtain a low order state space model. This reduced model has been used to simulate the effectiveness of the control strategy and the results have been compared with those obtained experimentally after the system implementation. A good agreement has been obtained demonstrating that the modelling procedure followed is useful to predict the effectiveness of control systems.

MAGAZINE:

International Journal of Mechatronics and Manufacturing Systems

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