A new technical solution of the road printer proposed to improve the efficiency of the device and reduce the complexity in the application of complex graphic images on asphalt concrete pavement to improve road safety was considered. The results of theoretical studies of the “Road Printer” project with the implementation of a simulation model of the automatic control system for a stepper motor of a road printer using the MATLAB & Simulink software are presented. The results of modeling a control system model with synthesized parameters of the proportional-integral-differentiating (PID) controller are given.

In this paper, we consider an approach to modeling the process of vibrating plate interaction with soil, taking into account the elements of the method of continuous non-destructive testing of the quality of compaction. For a theoretical description of a dynamic system model, the state space method is used. A mathematical model is obtained on the example of a three-mass stacker vibration plate system. A simulation model of the process under study is constructed in the language of the MATLAB/Simulink program. The results of a computer experiment are presented.

A mathematical model of the manipulator drive with a stepper motor is developed in the form of inductance equations, which is a source of reactive moment, inertial moment equation and angular velocity. Stepper motors work in the drives of manipulators with continuous movement, when the control action is given by a sequence of electrical pulses. The block diagram of the speed and current control loop of the stepper motor, given by the operator, is calculated in the computer (full step, direction, correction value for reverse speed, acceleration braking), the data is sent to the controller, in the controller the signals pass through the hard logic circuits and are sent to the driver. The stepper motor driver board generates a signal that is fed to the stator windings of the stepper motor. The results of mathematical modeling in MATLAB & Simulink are presented. The dependences of the oscillatory process of the system in the transients of the stepper motor, which are oscillatory in nature, are obtained. A comparison of the results of theoretical modeling of the operation of a step drive with experimental studies is given. As a result of the simulation, additional dynamics arise in the armature current circuit, however, at the point of the nominal mode, it does not significantly affect the angular velocity regulation processes, that is, the speed regulator provides its astatic regulation under the action of a constant load moment.

Controlled pipeline heat supply systems are equipped with shut-off valves that causes a decrease in the stabilization level of the heat-transfer agent transportation process and reducing the pressure in the network during transition processes. Booster pumping stations are installed to stabilize the pressure in the heat supply system. The heat-transfer agent transportation process becomes turbulent that significantly reduces the hydraulic system stability when such systems are working. The process of transporting the coolant. Regulator that contains proportional, integral, and differential control components is used to control the dynamic parameters. Studies have revealed the reduction level of dynamic characteristics depending on the regulator components. The use of PID control allows to change the oscillatory process into acyclic process.

The results of studying the dynamics of a construction 3D printer of manipulator type are considered. The analysis of the relevance of the 3D printing in road construction use, comparison of the technology with traditional methods of concrete structures construction is carried out. The choice of the investigated device type has been substantiated. A brief description of the construction 3D printer device, its element base and operating principle, illustrations of the research object and graphic materials are given. Forming without formwork using sliding formwork is considered, the mixture is compacted by the vibrator of the installation. A model of a construction 3D printer has been developed, which makes it possible to study the dynamic processes of interaction of the sliding formwork of the installation with a concrete mixture during construction products 3D printing. The temporal values of vibrations of the construction 3D printer trolley have been determined. The graphs of the oscillatory process of 3D printing and the time dependences of the electric current in the starting and operating modes were obtained.