Open Access – Statement
Scientific and professional articles in the journal Ventil are published in open access under the CC-BY-4.0 license. Authors are not charged for publishing the article.
Testing the impact of light conditions on image quality for optical inspection of surface defects
Contactless and automated optical inspection tools make headway in comparison to tactile methods in modern factories. In order to develop an advanced optical tool for inspection of metal components produced for the automotive industry, one faces a number of challenges.
A setting of accelerometer’s parameters for prevention of impacts and movements of washing machines at low rotational speed of drum
Nowadays, vibrations are listed as among the most difficult challenges in the research and development of washing machines. This paper shows the method and procedure of setting up parameters for improvements of the performance of the washing machine by implementing the accelerometer.
A nonlinear model of positioning electrohydraulic servo drive
The highly nonlinear nature of the electrohydraulic servo system is well known. The main reasons for nonlinear and non-differentiable mathematical descriptions of systems dynamics are fluid compressibility, leakage flows, friction forces, and nonlinear fluid flow through servo valve orifices.
Modelling of batch bioreactors
Mathematical models of fermentation processes are indispensable for designing bioreactors, simulation of their operation, optimization of fermentation processes, and design and synthesis of control systems for their control. The paper focuses on the determination of a dynamic mathematical model of the milk fermentation process taking place in a batch bioreactor.
On-line monitoring of hydraulic filter and machine condition
In addition to the hydraulic pump and actuator, which are the ever-present vital components of the hydraulic system, the hydraulic filter on the return line is also the ever-present, indispensable component of any hydraulic system.
Kamikaze – Spirit/Divine Wind (Shinpū Tokubetsu Kōgetai)
Kamikaze (divine wind or spirit wind) were Japanese pilots who in WWII made deliberate suicidal crashes into enemy ships. The pilot (kamikaze) had no means of getting out once the missile was fastened to the aircraft that would launch it.
Water-hydraulic endurance test of an oil-hydraulic proportional directional control valve
Hydraulic fluids made from fossil fuels are a major ecological burden despite their good corrosion and wear properties. Water seems to be the future of hydraulic fluids, but due to lack of interest and special equipment, it is still underestimated.
Mathematical Model to calculate the Volume of Hydraulic Accumulator
Hydraulic accumulators (HA) are installed in numerous HS mostly to add pressurized hydraulic liquid (HL) in HS to compensate the disproportionate consumption of some working hydraulic components…
Scientific Commentary of the Particulary Criminal Code – Penal Acts against the Safety of the Public Traffic
Slovenia has got the Scientif Commentary of the Particular Criminal Code – Penal Acts against the Safety of the Public Traffic.
Determination of static sensitivities of fast-response pressure measurement systems
This paper presents a dynamic and quasi-static method for determination of static sensitivity of fast-response piezoelectric pressure measurement system. In order to establish SI traceability for time-varying pressure measurements…
