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

Brunetti J.;D'Ambrogio W.;
2024-01-01

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.
2024
978-90-82893-17-5
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11697/254984
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