Имитационное исследование динамических процессов механизма опрокидывания кабины грузового автомобиля

Abstract

Represented by scheme of a simulation model of the hydraulic tilting the cab truck. A simulation model is implemented in the system modeling of dynamic and event-driven processes Simulink system engineering and scientific calculations Matlab. Structural scheme of the simulation model reflects the sequence of energy transfer from the operator to the actuator for a given law input operator. A simulation model was developed in the form in blocks with functional relationships modeling workflows pump manually operated, fluid motion in the pipeline and workflows in the Executive cylinder and the movement of the cab around its point tilting. Represented by structural scheme models of the input signal, and the movements of the cab around its point tilting. The model input signal developed taking into account the experimental studies on natural samples, and the model the cab movements developed using Lagrange equation of the second kind, which takes into account a mass of moving parts, reduced to the cylinder rod. Modeling of dynamic processes the tilting mechanism cab performed for the motion of the cab to the zone of unstable equilibrium when the frequency of exposure lever to be 1 Hz and the subsequent movement of the cab until the stop under the action of gravity. The simulation results are presented as a graph with the help of which we can estimate the pressure in the working chamber of the pump cylinder and the cab tilting angle around the breaking point. The analysis of the dependence of the fluid pressure in the working chamber of a hand pump and hydraulic cylinder cavity executive of cab tilt angle for harmonic input signal. The influence of the mass of the cab and tilt base tipping on the value of the manipulated variable. Also executed, the analysis of the energy parameters of the hydraulic cylinder under the influence of reduced load. Given the prospects for future research.