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Table 1 Main parameter of the PMSM Items Data Rated power [kW] 1 Rated voltage [V] 150 Rated current [A] 5.945 Phase 3 Frequency 133 Numbers of pole-pair 4 Turns in series of per-phase windings 114 Slot numbers 18 Outside diameter of stator [mm] 174 Inside diameter of stator [mm] 120 Length of air gap [mm] 2.5 Length of core [mm] 65 Electromagnetic flux density and intensity are shown in Fig 1 and Fig 2.
Fig. 9 parameters of the stator slot opening Fig. 10 The minimum value of cogging torque Table 2 Contrast on cogging torque of different parameters of stator slot opening b/mm a/° cogging torque/% 2 14 3.5587 16 3.6113 18 3.9113 2.5 14 4.1162 16 3.4293 18 2.7846 3 14 3.7158 16 3.3101 18 3.7410 The election of parameter ‘b’ and ‘a’ is crucial to the cogging torque reduction through the above analysis.
[5] Hwang, S.M., Lieu, D.K.: “Reduction of Torque Ripple in Brushless DC Motors”, IEEE Transactions on Magnetics, Vol. 31(1995), pp. 3737-3739

The advantages of this platform include pumping liquid with low volume by centrifugation, reduction in reagent/sample consumption, parallel processing, and short turn-around time [1].
All the data points fall on a master curve.
By increasing the depth of the reservoir and adding hydrophilic treatment to the reservoir, the flow resistance in the reservoir is greatly reduced, which results in the reduction of the variation of the burst frequency and makes the sequential flow control more robust.

The results obtained during the amenability test work were used as baseline data.
Although a reduction in the redox potential level to 580 mV was observed in the first stage reactor at 70°C, stable operation could be achieved at 15% solids (d90=10µm) (Fig. 3),which was in the same range as previously reported [5].
As demonstrated in Figure 3, further increases in the solids concentration to 17.5% resulted in wash-out of the culture as demonstrated by the reduction in both redox potential and oxygen consumption rates.

Relevant data shows that even in the United States, who has the strictest emission limits, small gasoline engine using carburettor is still above 98%[1].
Fuel supply reduction is less than air reduction, and mixture thickens and overrich mixture increase emissions of engine.

It can be seen that the fitted curves basically agree with experimental data.
After the cooling measures are implemented, the volume of concrete begins to contract for the reason of temperature reduction, then the stress compensation effect of MgO begins to appear.
It is found that the stress on the surface of the dam has a tendency of reduction with the amount of MgO increasing, but the compensation effect is not obvious.

After the reduction available: (3) According to the equation(2) with equation(3): The voltage value Control system The most important technology of assembly machine is to provide a stable torque for the piezoelectric transducer nut so that it can complete the installation, because the stepping motor has the characteristics which working status is not easily affected by various interference factors, angular displacement is proportional to the input pulse number strictly, motor running without accumulated error after a week, fast dynamic response, easy to stop[4],the system selects the stepper motor.
After assembling, TH2818 impedance analyzer and multimeter gets the data in table 1 Table 1 Compared with the new assembly and assembled of piezoelectric transducer Resonant frequency[kHz] Impedance[Ω] Static capacitance[nF] Assembled piezoelectric transducer 19.35 14.89 11.06 New assembly piezoelectric transducer 19.63 8.64 10.65 As shown in table 1 , the assembled piezoelectric transducer’s resonant frequency is less than that of the first assembly piezoelectric transducer, piezoelectric transducer’s impedance is greater than that of the first assembly.Therefore, it can be worked out that if piezoelectric transducer assembles twice, there will be a significant reduction performance.

This is further confirmed by the tensile modulus data of CNT-NR nanocomposites (Fig. 5).
Like carbon black, CNT also reinforces the rubber matrix and helps in attaining the reduction in wear rate, but at lesser weight fraction of reinforcement.
Similar reduction in wear rate was observed during incorporation of nanoparticle by other researchers [5].

Load-displacement relations were then obtained from the experimental data, and Jin and Jf were calculated using the following formulae: )( aWB U J in in − = η and )( aWB U J f f − = (1) where Uin and Uf are the critical energy at crack initiation and the total energy dissipated from the crack initiation to complete fracture, respectively.
These voids cause local stress concentration in the surrounding regions, resulting in the reduction of the initiation toughness.
Those kinds of voids dramatically decrease due to the LTI addition (Fig.4(b) and (d)), as a result of the reduction of PCL spherulites formation corresponding to the improvement of immiscibility between PLA and PCL.

In addition, the continuous reduction in selling price of PDPs, ~ 20% annually, led to a rapid expansion of the PDP TV market.
The first stage of weight reduction corresponds to the evaporation of solvents and the second stage corresponds to the evaporation of oligomers and cross-linked monomer used in the paste.
TG data of UV Curable Paste Based on these results, the trasnsferred barrier ribs molded on glass substrate were heated to 260o C and 400 o C, respectively and their microstructures were observed.

The total reduction in area after 21 passes was 99.90% that corresponded to an equivalent strain (ε) of 6.9.
The ARB is a kind of SPD processes using rolling deformation, and the details of the ARB process have been reported in previous literatures [3,5-9]. 50% reduction in thickness per ARB cycle was used for roll-bonding at room temperature, in order to fabricate sheet materials 1 mm thick.
[10] K.Hanazaki: unpublished data.