Vibrations on agricultural tractors due to soil irregularities cause significant health issues for operators. Reducing noise and vibration exposure is a priority for the (Italian) National Institute for Insurance against Accidents at Work (INAIL). While commercial seat or cabin suspension systems exist, they mainly address vertical vibrations. The authors developed a new mechanism to reduce both horizontal and rotational vibrations. To test these mechanisms, an oscillating platform driven by two double-effect pneumatic actuators with proportional-flow electro-valves was designed to simulate the tractor cabin motion. This paper experimentally tests a simplified 1 DoF electro-pneumatic positioning system adopting one double-effect pneumatic cylinder, characterizing its static and dynamic response. The cylinder is also instrumented with a couple of pressure transducers to clarify the role of the pressure on the positioner’s response. The results identify a set of transfer functions, which are then used to design a controller capable of reproducing standard ISO 5008:2002 road profiles.
Identification of the electromechanical model of a pneumatic positioner for the dynamic actuation of an oscillating platform / Antonelli, M. G.; Brunetti, J.; D’Ambrogio, W.; Fregolent, A.; Marafini, F.. - (2024), pp. 3731-3741. (Intervento presentato al convegno ISMA2024 International Conference on Noise and Vibration Engineering USD2024 International Conference on Uncertainty in Structural Dynamics tenutosi a Leuven; Belgium).
Identification of the electromechanical model of a pneumatic positioner for the dynamic actuation of an oscillating platform
A. Fregolent;F. Marafini
2024
Abstract
Vibrations on agricultural tractors due to soil irregularities cause significant health issues for operators. Reducing noise and vibration exposure is a priority for the (Italian) National Institute for Insurance against Accidents at Work (INAIL). While commercial seat or cabin suspension systems exist, they mainly address vertical vibrations. The authors developed a new mechanism to reduce both horizontal and rotational vibrations. To test these mechanisms, an oscillating platform driven by two double-effect pneumatic actuators with proportional-flow electro-valves was designed to simulate the tractor cabin motion. This paper experimentally tests a simplified 1 DoF electro-pneumatic positioning system adopting one double-effect pneumatic cylinder, characterizing its static and dynamic response. The cylinder is also instrumented with a couple of pressure transducers to clarify the role of the pressure on the positioner’s response. The results identify a set of transfer functions, which are then used to design a controller capable of reproducing standard ISO 5008:2002 road profiles.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.