Selection of the optimal mode of functioning the unit based on dynamic parameters

Abstract

The need to select the optimum modef of functioning of the MTU is one of the most important problems of modern science. With high probability, it can be argued that the methods for estimating trailer dynamic and economic characteristics require changes in the modern tractor industry. Steady motion of unit is regarded in many scientific works, excluding the oscillations of speed and the presence of acceleration during technological operations. The approach to the selection of the operating mode of MTU based on static traction or operating characteristics knowingly contributes big mistakes and as a result, makes it impossible to assess the theoretical optimum performance the MTU. The driving force generated by the interaction of the engine and running gear with the soil varies. This is due to variations in the engine torque due to the unevenness of fuel and other factors, but primarily soil properties change over time and space (path). This variable coupling properties of the soil, its density, humidity, different macro and micro relief and so on. Steady movement must be seen as a series of accelerations and decelerations the MTU. Excess or power supply is used to disperse the MTU. As an additional increase in speed leads to increased resistance and deterioration technological operation, it can be argued that part of the power consumed in the motor acceleration MTU will be permanently lost. To select the optimal operation of the MTU is necessary to assess the dynamic losses in steady motion, vibrations that occur when the actual vehicle speed and the dynamic component of slipping. For the MTU, a part of which operate the machine with variable mass, the proposed dynamic method allows to control mode change when the technological operations, and without any quality loss surgery to achieve a more effective use.