VIBRATORY STALK-CUTTING EXCITED BY VARIANCE OF MATERIAL STREAM

A specially designed and developed coupling equipment (patent name: MULTIKÁTOR) applied in driving cutting mechanism ( ie on forage harvesters) excites the motion in the direction of cutting-edge and results energy saving. Such a system could be modeled as a univariant oscillating system. The applied torque on the oscillating system can be divided into two parts: on the one hand a deterministic applied and on the other hand a stochastic loading torque originating from the cutting process. For this reason the excitation of the oscillating system is a stochastic signal. We present the theoretical method to evaluate the model with help of the random variable of the excitation signal we will characterize the probability parameters of angular speed and oscillation of the MULTIKATOR. The method can be adopted for similar model as well.