Investigation of amplitude-frequency characteristics of disturbing and control impacts of asymmetric swath header machine-and-tractor aggregate

Abstract

The dynamics of the movement of an asymmetric machine-and-tractor aggregate has essential peculiarities because of the presence of an asymmetric load and a constant disturbing and control impact upon the elements that control its movement. The experimental amplitude-frequency characteristics were studied under field conditions using as a model a harvesting asymmetric machine-and-tractor aggregate composed from a wheeled aggregating tractor MTZ-82 and a trailed swath header (windrower) ZVP-6, which performs the technological process of collecting winter wheat into swaths. Normalized spectral densities of variations of the turning angle of the trailed swath header have been determined, as well as the turning angle of the driven wheels of the aggregating tractor and relative tractor bearing.