In order to improve the reliability of tripping solenoid valve and switching steam turbine in nuclear power plant reduce abnormal closing. According working principle valves plant, this paper designs a kind electromagnetic sealing test system, including base, measurement control system hydraulic system. The detection is an offline By simulating real load condition tightness tested valve. actual...

Nowadays, the constant striving to reduce emission and increase overall efficiency over a wide range of speeds loads internal combustion engine (CE) is observed. The different methods for improving charge exchange in engine, particularly ones based on variable valve timing are sought. This variability can be achieved, among others by using electrohydraulic drive. goal present study compare dyna...

The paper presents numerical modeling of the dynamics of recently developed electromagnetic valve actuator. The decoupled modelling approach is employed consisting of three-dimensional finite element analysis of the magnetic field of the actuator and solution of the dynamics equations on the basis of functions obtained from the magnetic field analysis. For the finite element analysis ANSYS prog...

In this paper, a set of electromagnetic valve current characteristic test system is designed to improve the reliability trip solenoid in field steam turbine nuclear power plant. The starts from requirements, working principle valve, software control and other aspects complete pressure suppression function hydraulic functions data acquisition, storage, display, playback so on. composed an electr...

The superconducting magnetically levitated transport (Maglev) system is a focus of interest as a future mode of transport at high speeds of over 500 km/h. Using a computational model of the vertical and pitching motions of a Maglev train, a study is conducted on the effectiveness of a maximum force control of the primary suspension using electromagnetic forces output by a bogie-integrated linea...

Field strength measu rements were conducted in the mov ing trai n in the UHF band in the urban and sub-urban regions of western India. The observed signal levels were compared wi th those predicted from methods like Hata, Wal fish and Bertoni, Uni form theory of diffract ion, Ibrahim and Parsons, Egli and Blomquist and Ladell and suitable methods were ident ified. These studies will be use ful ...

The paper describes an integrated calculation methodology which, by simulating railway traffic, allows analysis of the performance of 2x25 kV 50 Hz electric traction systems. This methodology performs a multiconductor electrical analysis of the traction circuit utilising ATP-EMTP software (Alternative Transient Program-Electromagnetic Transient Program) and therefore additionally allows calcula...

The demonstration involves a new haptic interface based on a wide-bandwidth electromagnetic valve and a pair of chambers filled with a magnetorheological fluid. It is intended to reproduce, with highfidelity, properties of complex materials that are experienced through pressing and squeezing actions, at the detriment of shape.

Optimal design of high-speed valve trains requires the use of an accurate analytical model. While the governing differential equations are important, the coefficients (or parameters) used in these equations are equally as important. Since many of the parameters used in valve train models are difficult to measure directly, parameter identification based on experimental data is required to assure...

This report provides practical guidelines for the use of inexpensive electromagnetic valves characterized by large dead volumes (tens to hundreds of μL) for the generation of small (nL) droplets on demand in microfluidic chips. We analyze the role of the ratio of resistances and of the elastic capacitance of the fluidic connectors between the reservoir of the liquid, the valve and the microflui...