Journal of agricultural engineering research vol:74 issue:3 pages:281-291
Vertical sprayer boom movements are studied with experimental modal analysis. A distinction is made between rigid-body motions and flexible deformations of the sprayer boom. Pure vertical and rolling rigid-body motions of the boom are mainly caused by unwanted tractor movements which are caused primarily by soil undulations and tyre characteristics. Flexible boom vibrations are induced by vertical and rolling angular accelerations of the tractor body.