- 41. Investigation of stress-strain state of packet node connection in spatial vibration shakers
- (Geotechnical and mining mechanical engineering, machine building)
- ... as displacement and stretching simultaneously. To develop a method for calculating the structural and mechanical parameters of the considered CNs regarding the known values of amplitude and frequency parameters ...
- Created on 03 July 2018
- 42. Asymptotic method for investigating resonant regimes of nonlinear bending vibrations of elastic shaft
- (Geotechnical and mining mechanical engineering, machine building)
- ... equipment. Methodology. Methods for studying resonance amplitudes and frequencies, determining the strength characteristics of equipment are based on the use of asymptotic methods of nonlinear ...
- Created on 11 March 2018
- 43. Control regularities of the useful mineral extraction from ore feed stream with ball grinding. Spectral analysis
- (Information technologies, systems analysis and administration)
- ... analysis of control object. Findings. The analysis of the logarithmic amplitude-frequency characteristic of an enrichment section showed that the control strategy of a section and an ore concentrating ...
- Created on 11 January 2018
- 44. Three-phase power supply for resistance welding machine with corrected power factor
- (Electrical Complexes and Systems)
- ... of the transformer has a form close to rectangular. Formation of the inverter output voltage with a predetermined amplitude and frequency is done by six bidirectional switches with pulse width modulation ...
- Created on 06 September 2017
- 45. Effect of harmonic oscillations on a crack initiation in the rock mass
- (Mining)
- ... simultaneous effect of the rock stress state and oscillatory processes. The influence of the oscillation amplitude-frequency characteristics on the critical crack length has to be studied as well. Methodology. ...
- Created on 06 September 2017
- 46. Symmetrization of three-phase system with negative component filter using simulation
- (Power supply technologies)
- ... symmetrical components. Its amplitude is a function of the target value, which in the process of optimization is reduced to zero. The variables used to be optimized are the parameters of the balun. Optimization ...
- Created on 24 July 2017
- 47. The influence of viscoelastic properties of the belt on its dynamic characteristics
- (Geotechnical and mining mechanical engineering, machine building)
- ... Findings. Analytical relations for amplitude and frequency of transverse vibration definition for flexible viscoelastic axially-moving belts are obtained in the research. The influence of viscous ...
- Created on 24 July 2017
- 48. Perspectives of improving physical and mechanical properties of thermal coatings by electropulse exposure
- (Geotechnical and mining mechanical engineering, machine building)
- ... of the coating material was carried out by X-ray analysis on a DRON-3. Findings.The optimum amplitude and frequency parameters of EPE at electric arc spraying of Sv-08G2S wire (pulse frequency – 6.5 ...
- Created on 16 March 2017
- 49. Conditions of replacing a single-frequency vibro-exciter with a dual-frequency one in the form of passive auto-balancer
- (Solid-State Physics, Mineral Processing)
- ... the form of the passive auto-balancer) are selected analytically at which the amplitude and frequency of slow vibrations of its box are equal to the amplitude and forced oscillation frequency of the box ...
- Created on 16 March 2017
- 50. The development of the simple modified control law for the compensation of the cogging torque in the synchronous motor with permanent magnets (Entwurf einer einfachen und modifizierten rastmomentkompensation für die permanenterregte synchronmaschine)
- (Electrical complexes and system)
- ... of the operation speeds. Originality. The presented research shows that compensation of the cogging torque depends on rotation speed of the motor. Therefore the phase delay and the amplitude ratio ...
- Created on 19 January 2017