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Few experimental data, mainly related to concrete or reinforced concrete joints [2] [3], is available in literature.
Fig. 3 – Specimens mounted at the testing machine Testing control and data acquisition.
Load reductions were registered by the DAQ system and are clearly visible in the resulting test diagrams shown in Fig. 4.
The experimental investigations were safely performed in control of position, which led to a reduction of the loads, after gross plastic deformations, and to a slow, controlled, transient to failure.

It is clear that the correct formulation of problems in the area of technical mechanics plays a key role in any reduction in accident threats caused by the human factor.
Only data security is independent of experimental mechanics.
The helicopter had been flight-tested, but its design was based on catalogue data and on the personal experience and intuition of the constructor.
A further reduction in cost could have been achieved by replacing a part of the fatigue tests in the static tests.

Currently ,Most of the APF use the digital signal processor (DSP) as a control chip, [1]DSP is a CPU which adopts a Harvard architecture design, having strong computing power and high speed, but it needs to frequently interrupt in the AFP data collecting, and it calculates complex control algorithms by software, which greatly reduces its calculating speed and increases the complexity, and cuts down its reliability.
[5]It uses DC bus voltage command value to subtract the voltage feedback value ,and get the DC bus voltage error , voltage error is translated into the inductance current by the voltage controller PI regulator , inductance current is translated into transient given reduction through the current controller and converter inductor current,uses transient given reduction to subtract the load current and get , input to the hysteretic comparator to generate the PWM drive signal ,at the same time, voltage feedback value is attained by multiplying and.
(11) Experimental Results The general diagram of the experiment is shown in Fig. 3,it is composed of inverter, controller and non-linear load, The control system is a key part of the whole APF , which includes a FPGA chip EP1C12Q240, a AD chip ADS7864, two high-speed SRAM chip IDT71V416S ,a FLASH chip AM29LV1065D,a RS485 chip MAX3485,a RS232 chip MAX3223 and the CAN chip PCA82C250 etc. [6]EP1C12Q240C8 is a low-cost Cyclone series, medium-density FPGA chip ,having 1.5V core voltage and 12,060 logic cells, EP1C12Q240C8 software can be designed by using both VHDL language and the schematic design, in order to achieve optimal design, this paper combines with VHDL and schematic design, EP1C12Q240C8 is responsible for the control of the normal operation of the APF, including start-up timing, peripherals managing, controlling the generated pulse, conversing A/D , data

Discharge method was stand for 1 h in different stated temperature, and then discharged in constant current at 1C until the voltage dropped to cutoff voltage 2 V, calculated released capacity; ③ Developing experimental program : In this experiment, 25 ℃ was set as temperature test basis points , firstly low-temperature performance testing was conducted , starting from 25 ℃ to -40 ℃, made 0 ℃, -10 ℃, -20 ℃, -40 ℃ as visits point respectively, the rate of temperature changing is 1 ℃ / min, at each temperature test point , the test batteries were shelved for 24 h before temperature performance test under the temperature point ; then high temperature performance test battery was conducted , resume the high and low temperature test chamber to 25 ℃, in order to eliminate produced by low-temperature impact test , and the data measured was used as a reference point for high-temperature testing , followed by a high-temperature performance of the test battery , started from 25 ℃ to 60 ℃, discharge
capacities of different lithium- ion batteries were investigated under 1C; ④ When the high and low temperature test chamber reached the set temperature stably, put a single experimental tank lithium-ion battery which standard voltage is 3.2 V after standing for 1 day in the chamber insulating for 1 h, made it reach to thermal equilibrium ; ⑤ Switch on discharge circuit to start the experiment , did not shut off the discharge circuit during the experiment to measure the actual voltage ; ⑥ When the battery discharged to a cutoff voltage of 2.0 V, stopped the discharge , analyzed and processed the data .
Fig. 1 The discharge capacity of Batteries Fig. 2 The discharge curve of Batteries at different temperatures at different temperatures Fig. 3 The discharge curve of Batteries at -20℃ Fig. 4 The discharge curve of Batteries at -40℃ From Fig.1 and Fig.2, it can be seen that the discharge capacity of nano LiFePO4 Power Batteries would reduce with the declining of temperature, because under the condition of low temperature, the concentration of battery electrolyte increases, which leads to a slow rate of lithium ion deintercalated from anode materials, In addition, as the internal resistance of the battery becomes larger, discharge cut-off voltage of the lithium-ion battery is reached In advance, resulting the decrease of its discharge capacity, as well as the reduction in discharge efficiency[3,4].
Physical characteristics of the electrode materials of lithium batteries will decay irreversibly under the condition of high temperature, and the reaction of electrode materials will weaken, so the decrease of its discharge capacity, as well as the reduction in discharge efficiency.

The method this paper adopted is the influence coefficient method, which does not need that much information of the rotor system, and it can collect and process data automatically.
The experimental data and test results under the rotate speed 1200 rpm are presented in Table 1.
amplitude of plane II after adding trial weight on plane I /um 92.54 Vibration phase of plane II after adding trial weight on plane I /° 348.03 Add trial weight on plane II /g 2.5 Phase of trial weight on plane II 0 Vibration amplitude of Plane I after adding trial weight on plane II /um 39.89 Vibration phase of Plane I after adding trial weight on plane II /° 80.06 Vibration amplitude of Plane II after adding trial weight on plane II /um 120.67 Vibration phase of Plane II after adding trial weight on plane II /° 293.24 The correction weight on plane I/g 2.9761 The correction phase on plane I /° 50.12 The correction weight on plane II/g 2.8658 The correction phase on plane II /° -80.07 Vibration amplitude of Plane I after adding balance weight on plane I and II /um 8.83 Balance rate of plane I 87.79% Vibration amplitude of Plane II after adding balance weight on plane I and II /um 15.35 Balance rate of plane II 88.68% From the results of double dynamic balance experiment, the vibration reduction
After one time dynamic balance revision, the vibration reduction rate of the rigid rotor reaches could be above 85%

Analysis of published data point to essential influence of polarizing signal duration on quality of the formed coating.
It was noted that the reduction in the pulse duration significantly reduces the porosity of the coatings, and as a result, their physical and chemical properties are improved.
The analysis of electrochemical data showed an increase of the polarization resistance and a corresponding reduction of the corrosion current for PEO coatings formed with the microsecond pulses, as compared to PEO coatings obtained by the millisecond pulses at the thyristor unit.

Practice: the open-loop system , an appropriate amplitude step signal output by the controller, so that the pump speed is increased to a certain extent , and then record the change in water pressure process, in accordance with the input and output data to identify.
Fuzzy PID control system simulation Simulation, the system can use the oscilloscope output data can be stored in the MATLAB workspace variable specified curve will be output to a separate window , and then use the drawing commands in the MATLAB environment .
Fuzzy PID controller, the the PID three parameters to achieve line adjustment control system phase jump response curve overshoot , the system greatly shorten the transition time, reduction of the oscillation frequency, the system showed better stability.
The simulation results show that the fuzzy PID controller parameter adaptive, control system response speed, overshoot to be reduced , the transition time is greatly reduced, reduction in the number of oscillations, stability and strong robustness, these are simply the PID control is difficult to achieve.

This confirms that the boric acid has little effect on the oxidation and reduction processes of the lead electrode.
Table.1 The oxidation and reduction capacity in different electrolyte Q+(C) Q- (C) r=Q+/Q- H2SO4 0.02814 0.03494 0.805 gel 0.02881 0.03055 0.943 0.2wt.% H3BO3 0.02931 0.03205 0.915 0.4wt.% H3BO3 0.0318 0.03436 0.925 0.5wt.% H3BO3 0.02561 0.02808 0.912 0.7wt.% H3BO3 0.02711 0.03009 0.875 EIS is an important method to study the kinetics of the electrode process, which is very complex.
An equivalent circuit analysis was also conducted; the proposed equivalent circuits used to fit the experimental data are shown in Fig.5.
The reaction resistance(Rct) of oxygen evolution obtained by fitting the experimental data are shown in Fig.4(B), It can be seen when the addition of boric acid was 0.4wt.%, the Rct reached max, implying that oxygen evolution is inhibited.

Data obtained from the measurements of the specific heat, thermal diffusivity and room temperature bulk density were used to deduce the thermal conductivity of D7, C7, E5 and of a virgin sample (sample E6) in the 50-500 K temperature range, according to the following relationship : k(T) = ρ .
This could be related to a reduction of nanocavity densities in case of a high TI, or to the absence of any amorphous layer in the matrix, due to a recombination of point defects during the implantation. 0 500 1000 1500 2000 no implantation TI 750°C TI RT Intensity (A.U.)
For longitudinal and transverse modes, BU coefficients were obtained from fitting the experimental data above 400 K, and BN between 250 and 400 K.
The decrease of Γ with introducing gettering sites was interpreted as reduction of phonon-impurities scattering.

However, since a consequence of the reduction of Ce 4+ to Ce 3+, ceria based electrolytes show a mixed ionic-electronic conducting behavior at high temperature or in a reducing atmosphere, resulting in a significant decrease in voltage, power output and efficiency of the cell [6].
The reduction of ceria can neglected at lower temperature around 600-700°C, but singly doped ceria used as SOFC electrolyte may not be suitable at such low temperatures as the ionic conductivity is low.
The conductivity σ data for the samples can be calculated from resistance data determined by ac impedance spectroscopy measured at different temperatures with the standard relationship: S L R 1 =σ (1) where L is the thickness, and S is the effective electrode area.