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Lifelong multi-agent path planning of automated guided vehicles in intralogistics

Lifelong multi-agent path planning of automated guided vehicles in intralogistics

This article presents new findings in the field of theoretical and practical aspects of the logistics of autonomous vehicles in the industrial sector, which are being investigated as part of an applied research project. The aim of the project is to use intelligent approaches and limited computing power to find optimal paths, temporal movement plans and task scheduling for a fleet of automated guided vehicles.

Is future of hydraulics in water with lower weight of components?

Is future of hydraulics in water with lower weight of components?

Over time, the hydraulic component industry for oil hydraulics has gained a monopoly in development. Only components for oil hydraulics have been developed. Compared with oil, water as a hydraulic fluid has a better ecological effect, because it does not pollute the environment. Ecology has restarted the development of water hydraulics, which was used in the early days of hydraulics. The development of water hydraulics is progressing, but can it compete with oil hydraulics?

Impact of oil cleanliness on sustainability of hydraulic directional control valve

Impact of oil cleanliness on sustainability of hydraulic directional control valve

Hydraulic systems are very common in industry and other technical fields. The most frequently used valves for control are sliding directional control valves, which do not have seals on the control pistons. This causes internal leakage. The stability of the leakage is highly dependent on the purity of the hydraulic fluid. The thesis deals with the influence of the purity of the hydraulic oil on the durability and volumetric efficiency of the sliding directional control valve under consideration. As part of the thesis, a hydraulic test rig was designed and assembled, on which three durability tests of a hydraulic 4/3 directional control valve were performed.

Physical background of hydraulic fluid flow through a filter

Physical background of hydraulic fluid flow through a filter

Filtering or removing unwanted solid particles from the medium we want to clean, be it different gases or liquids, is a very complex process. This is already evident in the basic terms related to the type, material and shape of the filter and the filtering process. This is especially evident in the in-depth knowledge of the physical background of the liquid passing through the filter, the mechanisms of the elimination of unwanted particles, and in the modelling and simulation of this process.

Development of the hydraulic system of the Stewart platform

Development of the hydraulic system of the Stewart platform

The Stewart platform allows simulation in six degrees of freedom. It consists of two irregular hexagons connected by six actuators – hydraulic cylinders. The controlled simultaneous retraction or extraction of the piston rods from the tubes of the hydraulic cylinders changes the length of each leg, achieving the movement of the upper moving platform, which is described using a mathematical background.

Science and expert articles

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