Search results

The dynamic PSO modifies the inertia weight, learning coefficients and two independent random sequences which affect the convergence capability and solution quality, in order to improve the performance of the standard PSO algorithm.
While the motor parameters change with the external factors, these changes are not only related to motor temperature, but also related to motor operating condition.
For example, RLS algorithm is complex and the identification result accuracy is lower; EKF algorithm design and the objective function are difficult to determine, the operating time is longer, and easily affected by noise; MRAS can only identify rotor time constant or rotor resistance In recent years, many scholars apply intelligent optimization algorithm to asynchronous motor parameter identification.
APM Model Assuming that the APM has ideal physical properties and mechanical structure, the mt-axis equations of the APM are given by Eq. 1
A coaxial connector is used for their mechanical connection.

Load sharing is one of the main factors that determine gear strength.
However, tooth surface modification not only changes the meshing characteristics, but also affects the contact ratio, load sharing and strength.
The mechanical properties of the gear material and the torque applied on the pinion are described in Section 3.2.
Fang: Chinese Mechanical engineering.
Fang: Journal of Mechanical Transmission.

The integration of a sensor in food packaging and new smart packaging development will focus more on food safety (detecting microbial growth, oxidation, improving tamper visibility), food quality (detection of volatile flavors and aromas), shelflife, tracking, authentication, convenience, and sustainability of food products [8]. pH affects the sensory properties of many foodstuff.
Changes in Hunter colour values (L,a and b) of smart film indicator at refrigerated temperature (a) before in contact with pH buffer; and (b) after in contact with pH buffer pH was believed to be one of the important factor effecting the growth of microorganisms in food because it affects the microbial energy metabolism involving the build-up of gradient of hydrogen ions across membranes and microbial enzyme activity and stability of cellular macromolecules.
Further studies are needed on the effect of such colour indicators on the mechanical properties of the smart packaging films.
Antimicrobial Properties of Basil and Its Possible Application in Food Packaging.
Intelligent Packaging as Device for Monitoring of Risk Factors in Food.

For more intensive penetration of the liquid binder into the volume of the capillary-porous reinforcing structure, measures affected the viscosity properties of the liquid are used - transmission into its volume the oscillations with different values of amplitude-frequency characteristics - dynamic mode of the vacuum infusion process.
Traditionally, the theory of the research in this area is based on: - differential equations of mass transfer; - a three-phase fibrous filler structure consisting of solid particles bound by a free liquid phase; - contact task, describing the process of stress-strain state of the system and other factors that significantly affect the technological process.
In the zone of interaction of the viscous matrix with the reinforcing component, the hydraulic pressure H = H(x, y) acts, characterized by the filtration properties of the capillary-porous structure, the geometry of the phase interaction zone of the simulated system and the compression pressure P = P (x, y), which is determined the magnitude of the vacuum created by the means of VIE.
Textile is a porous medium and, therefore, has a certain number of cavities or empty spaces of various diameters in its structure, which affect the value of the filtration coefficient.
Kalinin, The use of mechanical vibrations as a factor in the intensification of mass transfer processes in the technology of processing capillary-porous structures.

The result further reveal that the dynamics coupling property of the system increase with the frequency and reach the maximum value at the natural frequency.
At a frequency higher than the natural frequency the coupling property decreases.
From (1), the coupling effects can be from these three factors: the mass matrix, the Coriolis /centrifugal and the gravitational effects.
Neglecting Coriolis/centripetal and gravity factors in (1), it can be simplified as (2) Gravity will be compensated in the Matlab/Simulink simulation model while Coriolis/centripetal will be treated as external disturbances.
The actuator forces, will affect the platform coordinates, through the transposed Jacobian, and the platform velocity will have to be projected along actuators by using, is the 6×1 acceleration vector of the actuator length changes.

In addition, a housing protects a user against electric trauma and other negative factors arising during operation of the electronic equipment.
Drawing attention to the fact that in the case of a multi-filament extrusion line, the product can be obtained from several materials with different properties, the use of 3D printing in housing making seems to be very promising.
The safety factor is used for comparison.
Red color indicates areas with thermally conductive properties Table 1.
[11] Lucie Trhlíková, Oldrich Zmeskal, Petr Psencik Pavel Florian, Study of the thermal properties of filaments for 3D printing, AIP Conference Proceedings 1752 (2016) 040027, doi: 10.1063/1.4955258 [12] D.

The aim of the work is to establish the regularities of the formation of the structure of aerated concrete based on liquid glass and unsorted breakage of technical glass, depending on its dispersion and granulometric composition. 2 Materials and Methods The research was carried out by using the systemic-structural approach: composition - structure - properties.
It considered both the chemical processes occurring during the hardening of the system, and physical factors affecting the micro- and macrostructure of aerated concrete.
Among these factors, it is necessary to highlight the dispersion of unsorted breakage of technical glass, on which the technical characteristics of aerated concrete depend.
Influence of liquid glass density on the properties of aerated concrete.
Dependence of the reaction and foaming ability of compositions organic and inorganic porous steam generators of cellular heat-insulating construction glass material from their ratio and properties.

The integration of all these factors that allows for effective planning, well specific MPD process and optimisation plus real-time monitoring and diagnosis is the specific objective of the VisWELL .
Some of the key issues affecting successful MPD operations are: • The appropriate fit-for-purpose MPD technique to use • How can these techniques be optimised on a well-by- well basis?
• The ability to analyse the causes of drillpipe eccentricity and relationship with drillstring torque/drag conditions • Ability to analyse the effects of transients • The ability to define the rheological properties of multi phase drilling fluids at bottom hole conditions Eccentricity, coupled with drillstring rotation affect the annular velocities in the well and the prevailing multiphase flow patterns as well as pattern profile which then has an effect on hole cleaning and pressure regimes in the wellbore. .
The integration of all these factors that allows for effective planning, well specific MPD process and optimisation plus real-time monitoring and diagnosis is the specific objective of the VisWELL.
The casing provides hydraulic and mechanical energy to a retrievable drilling assembly suspended from a profile nipple located near the bottom of the casing.

The accuracy of the model will directly affect the credibility of the simulation results.
Many factors affected the longitudinal adhesion characteristics, which mainly included the road materials, the state of the road surface and the tire structure, materials, tread pattern, recency, tire pressure, tire force and the state of motion of the tire relative to the road surface[1].
Dynamic Road Adhesion Coefficient Measurement Principle The braking process of the vehicle on the road surface is a multi-factor, non-linear dynamic process.
Dynamic road adhesion coefficient is related to many factors, such as the condition of the road surface, tire parameters and surface conditions, tire slip rate.
Road surface conditions included pavement material properties, pavement smoothness and corrupt state.

Activated carbon, having well-developed pore structure and high specific surface area of many factors of the variables effecting CMP are known.
These factors can be changed and balanced to achieve a desired level of performance of polished material for a particular polishing task or particular polishing tool.
Revision to any one of the factors to increase a certain aspect of performance often requires compromise in others[7-11].
Those mentioned above has effect on some important CMP properties, such as polishing rate and polishing effect.
Through the comparison for various factors, the pH value of CeO2-SiO2 CMP slurry should be controlled in 10-10.5.