Robust Control of a New Electro-Hydraulic Pump for Agricultural Tractors

Autor: Borodani, Pandeli, Colombo, Davide, Forestello, Marco, Morselli, Riccardo, Turco, Patrizio
Zdroj: IFAC-PapersOnLine; January 2011, Vol. 44 Issue: 1 p2266-2271, 6p
Abstrakt: The increased sensitivity for environmental protection and global market competition are pointing out urgent needs for significant improvement of fuel economy, while nowadays the agricultural tractors fuel consumption is growing, as a consequence of an increased number of components supplied. In this study, it is dealt with an innovative configuration where, the main hydraulic pump is substituted with a new electro-hydraulic one, with aim to optimise the work operating points. This new hydraulic circuit is arranged by CNH Agriculture at Modena plants in a prototype agriculture tractor of medium segment; it is the plant under control and is managed by means of an appropriate control structure, that electronically pilots the device. The control design methodology employed in the present case is based on robust H∞optimisation techniques, where robust stability properties are guaranteed in presence of unaccountable dynamics and other destabilising factors. The effectiveness of the proposed control approach is tested on the demonstrative tractor, in all real conditions.
Databáze: Supplemental Index