The thesis is devoted to increasing the stability and controllability of a block-modular unit's traffic based on a modular power unit (MPU) of variable traction class 1,4-3. MPU consists of power (PM) and technological (TM) modules interconnected in the horizontal plane. To limit the TM's angular mobility relative to the PM, the connecting device of the first one is equipped with two hydraulic cylinders. To increase the MTU traffic stability and controllability, one of the indicated hydraulic cylinders is equipped with a washer-shaped throttle, the bore diameter of which is assumed to be 2 mm. This allows obtaining the hydraulic resistance coefficient value of the given throttle (Km) not less than 106 N∙m∙s∙rad-1. With this value of Km, the unfolding torque acting on the MTU from the side of its technological part is capable of turning the TM only by 1,25°. The decrease in the phase-frequency characteristics of the energy module oscillations reaches 150°. In practice, this leads to a reduction in the delay in his reaction to a disturbance from 7,6 to 2,4 s, while the amplitude of oscillations decreases by almost 17 times. With an increase in the speed of the block-modular unit from 2 to 5 m∙s-1, the amplitude-frequency characteristics of the disturbance processing by the technological module together with the tool attached to it, as well as the power module of the MPU, change little and have a resonance peak, which falls at a frequency of 10 s-1. Compared with the technological one, the frequency response of the disturbance's reproduction in the form of a turning torque by the energy module is less. The nature of the block-modular unit's movement's stability is practically invariant concerning the drag coefficients of the tire slip of the front and rear axles of the power module of the MPU. Installation of the technological module's axle tires with a total drag coefficient of 260 kN∙rad-1 and more contributes to a decrease in the amplitude of both its oscillations and the oscillations of the energy module. In the frequency ranges of the disturbance change of 0-5 and 10-20 s-1, the TM rotation angle does not exceed 4о at all. The dispersion of the MPU technological module's angular vibrations with a plow attached to it when the unit moves along the field is concentrated in a relatively narrow frequency range of 0,25-1,.50 s-1. During a block-modular MTU movement on an unprocessed background, this range is twice as wide: 0,25-3,00 s-1. This indicates that the TM's vibrations with a plow on a roughened field are lower than those on an untreated one. The introduction of a hydraulic damper with a resistance coefficient of at least 106 N∙m∙s∙rad-1. The maximum value of the positive correlation between the angular oscillations of the technological and power modules of the MPU increases to 0,87, that is, increases by 2,7 times. In this case, PM and TM practically together counteract the disturbing influence in the form of a turning torque, which positively affects the entire block-modular MTU movement's stability. Hydraulic damping of the technological module's hydraulic cylinder with a stiffness coefficient not less than 106 N∙m∙s∙rad-1 allows to bring the maximum of the mutual correlation between the control influence and the heading angle of the energy module to 0,89, shift it to the right of the zero ordinate and reduce the delay the reaction of the heading angle to the change in the steering angle of the control wheels of the power module is almost doubled. The introduction of a plow block-modular unit, tuned according to the developed practical recommendations, allows increasing performance and reducing labor costs by 8,4%.
