04 Atto di Convegno (Proceedings)

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Preliminary experimental tests in hemi-anechoic chamber for active noise control inside the cabin of a tractor

In recent years, increasing attention has been paid to vibration and acoustic noise control in industrial applications. The control of these phenomena allows to preserve the comfort and the health of people subjected to long periods of noise exposure and to a high level of disturbance. One example is the case of agricultural operators, exposed to loud noise for several hours per day. To solve this problem, active noise control (ANC) represents a valid solution in order to attenuate the noise ...

Vibration tests on five agricultural tractors with increasingly efficient vibration control systems under normal working conditions

The investigation involved five agricultural tractors with increasingly efficient vibration control systems. Tri-axial frequency-weighted acceleration values were acquired on the seat surface and on the cabin floor, together with the running speed values. Measurements were carried out under normal working conditions. Results indicate that during ploughing and harrowing the axis determining the exposure risk for the operator is generally the transversal one, due to the roll effect. Differently...

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