Search results

The DSP converts the voltage signal into digital data, which are then used to determine the switching cycles by using a computer program.
Gundogan, Design of a high-efficiency 12V/1kW 3-phase BLDC motor drive system for diesel engine emissions reductions, 2013 IEEE in Energy Conversion Congress and Exposition (ECCE). (2013) 1077-1081
Yetkin, et al., Design of a High-Efficiency Minimum-Torque-Ripple 12-V/1-kW Three-Phase BLDC Motor Drive System for Diesel Engine Emission Reductions, IEEE Transactions on Vehicular Technology. 63 (2014) 3107-3115

Doping materials with glass spheres results in substantial reduction of their weight and sustainable strength characteristics.
Results and Discussion One of important results arising from application of glass spheres is the reduction of material’s specific weight.
Experimental data were compared with theoretical values of specific density found from the ratio of the mass of a composite and the total volume of all the ingredients [14].

The influence of temperature on storage battery is mainly shown on its capacity and utilization rate of active materials, both of which decrease with temperature reduction.
Activated carbon makes the over potential of lead reduction reaction in the negative electrode decrease, which is conducive to the formation of metal lead and improves the charging acceptance ability of battery.
Table 1: The carbon material parameters Material BET specific surface area Average pore volume Average pore size 2#C 377.24 m²/g 2.34 cm³/g 30.02nm The data of the table shows that this kind of carbon material has a small specific surface area, large pore volume, and large pore size.

In light of emission reduction and weight saving in transport applications, Mg parts gain a lot attention due to their good specific mechanical properties and their low mass.
Nevertheless, significantly increasing air traffic [3], in combination with the aim to halve carbon emissions caused by aviation till 2050 [4] and the therefore necessary weight reductions led to a rethinking of Mg as engineering material.
In this work the responsible intermetallic phases are Al2Ca (identified with EDX - data not shown).

Reference [8] found experimentally that the stiffness variation could be described by a once-per-revolution sinusoidal function by considering a local reduction of the second moment of inertia to model the crack.
In their work it was demonstrated that a transverse crack in a rotor shaft might be represented by the reduction of the second moment of area of the element at the location of the crack.
To date, there is a lack of reliable experimental data to support the theoretical modelling results.
For each measurement, before recording the data, a small initial force was applied to stabilise the measuring process.
Load and displacement data were recorded and processed later using Microsoft Excel.

The experiments could also be performed at high temperature and this procedure is expected to enhance plastic deformation and surface melting of the powders, and to enable the reduction of the shock pressure required for the consolidation [2].
The data acquisition system must also be properly triggered.
Pressure data taken from different locations of the gun and optical signals from the pellet velocity monitoring system are the quantities usually acquired.
A correction based on the local Mach number is then used to account for the slight driving pressure reduction for these unusual applications.
Typical data provided by these numerical tests are given in Figs 3a, 3b, 3c.

According to the research data indicate that shape coefficient increased 0.01 per heat consumption index increased by about 2.5%.
So in order to serve the purpose of energy conservation, reduce indoor heat loss should be combined with the use of the function, select the appropriate plane shape, try to avoid uneven shape, measures often used are: (l) For the purpose of energy-saving construction, a joint column for each additional unit, that will reduce building a wall, its exterior wall area shrinks, also a corresponding reduction in shape factor.
(3) When the standard floor area is the same, raise deep into the building, will be a corresponding reduction in shape coefficient relative, right angle and square shape coefficient is minimum.
Data show that high absorption black roofing material, surface and ambient temperature difference may be as high as 50 ℃; while high light reflective roofing materials, the temperature difference of only 11.1 ℃, roof color the more light, the better the energy saving effect.
Conclusions Residential building energy efficiency design are: the building envelope (including exterior walls, roof, windows, floor) provisions of indicators, including heat resistance of each part, the value of thermal inertia, the area ratio of window to wall windows, shading coefficient and data on the effects of various factors make the situation analysis; thermal insulation of the building envelope practices; passive solar energy applications in residential buildings.

(4) Large BIM embedded database support a lot of people implement team design in the same building data model.
And achieve the data be maintained and shared on a network platform, which makes the authorized person get information convenient and makes information be exchanged and managed timely.
According to PwC’s research report, “the BLM technology can make document circulation time of project management save 30% to 60%, 5% reduction in overall project cycle, make the time of the executives on the characters save 20% to 50%, make the cost of print, mail, travel save 20% to 30%, make the time of searching information save 50%, it will eventually lead to a 5% reduction in the cost of the project”.
Software products have many varieties, but the standards of data exchange are not unified.

Table 5 Technical Standard Value of Efficient Retarding Superplasticizer Index Water Reduction Ratio [%] Bleeding Ratio [%] Air Content [%] Setting Time Difference [min] Compressive Strength Ratio [%] Initial Final 1d 3d 7d 28d FDN-15 16 62 1.0 +40 +73 142 131 120 119 Specification Values ≥10 ≤95 ≤4.0 -90～+120 ≥130 ≥120 ≥115 ≥110 Table 6 Technical Standard Value of Entraining Agent Species Place of origin The best content Water Reduction ratio[％] Air entrainment [％] JM-200C Nanjing Jiangsu 0.5‱～0.8‱ None 5～10 2 Orthogonal Test Design With reference to the durability characteristics of concrete bridges which in alpine frigid region, Water-binder Ratio, fly ash, water and air content are consider to be the orthogonal factors of C40 concrete.
Relative dynamic elastic modulus is a non-destructive testing indicators，It should be larger than 60%, as follows: (3) In the formula： P—Relative dynamic elastic modulus after n times of Freeze-thaw cycles (%); fn—Transverse fundamental frequency after n times of salt freeze cycles (Hz); f0—Transverse fundamental frequency before the test (Hz); N —the number of Freeze-thaw cycles. 3.3 Test Results Table 8 C40 Concrete Freeze-Thaw Test Data No.
The experimental data show that, with the decreased water, the deicer-frost resistance of concrete increases.
According to the characteristics of bridge engineering, combining with the experimental data presented the recommended values of the composition material parameters based on frost resistance of bridge concrete in the ​​alpine region of Xinjiang.

Therefore, utilization of solar energy (photovoltaic generation, solar thermal power generation and solar water heating), biomass energy and hydrogen energy that would contribute to reduction of CO2, environmental friendly and renewable energy are actively studied.
Microwave transmitter Solar panels Primary mirrors Microwave transmitter Solar panels Primary mirrors data of M-SSPS> ・ Microwave frequency: 5.8GHz ・ Primary mirrors: 2.5km×3.5km×2, 1,000ton×2 ・ Solar panels: φ1.25km×2 (Concentration ratio=4) ・ Microwave power transmitter: φ1.8km (TBD) ・ Total weight: less than 10,000ton Fig. 1. 2004/2005 JAXA reference system for M-SSPS. ・ Solar panels are separated from microwave power transmitter (structurally-connected), so the backside of solar panels and microwave power transmitter can be used as heat release surface
Radiators Laser amplifier / oscillator Condenser mirrors Laser beam Radiators Laser amplifier / oscillator Condenser mirrors Laser beam data of 10MW class L-SSPS> ・ Output laser power: 10MW ・ Laser wavelength: 1.06µm ・ Laser amplifier / oscillator: 100m ・ Condenser mirrors : 200m×100m×2 ・ Radiators : 150m×100m×2 ・ Total weight: less than 50ton Fig. 2. 2004/2005 JAXA reference system for one base unit of L-SSPS.
In this research, conditions of the laser transmission data of 1GW class L-SSPS> ・ Output laser power: 10MW×100units=1GW ・ System size: 400m (direction of mirror) 200m (direction of radiator) 12km (direction of junction) ・ Total weight: 50ton×100units=5,000ton Fig. 3. 2004/2005 JAXA reference system for total system of L-SSPS. experiment are as follows; the laser output is about 10W, the wavelength of laser is 1064nm (Nd-YVO4, CW), the beam diameter of oscillator is about 50mm and that of receiver is about 250mm, the beam passes in 1.3 - 2.1m in height from the ground, and the transmission distance is 500m.
The potential difference of oxidation and reduction of hydrogen sulfide is only a quarter of that of the water.