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Based on the dynamic model of 1/4 vehicle suspension, an active control system is designed using the fractional order exponential reaching law of model following variable structure control strategy. An active suspension with linear quadratic optimal control is used as the reference model. The sliding mode switching surface parameters is designed by pole placement method to ensure the stability of the system. At the same time, combined with the index reaching law proposed by Professor Gao Wei Bing and the definition and properties of fractional index, constructs a similar fractional order exponent reaching law to improve the dynamic quality of sliding mode motion. And in MATLAB, system modeling and controller design are implemented. By setting up experiments, the different suspensions are compared. The results show that compared with the passive suspension, the performance of the vehicle can be improved better, and the performance of the tracking reference model has good tracking performance. Moreover, compared with the integral exponential reaching law, the chattering can be more effectively weakened. Finally, before and after the change of vehicle parameters in the simulation, the results show that the system has good robustness.

In order to study the evolution of local crystal and electronic structure of Sr2CuO2F2+x, the synchrotron radiation x-ray absorption (XAS) and x-ray absorption fine structure (XAFS) techniques were both performed on different amount of Sr2CuO2F2+x materials. The relationship between high Tc superconductivity and valence state of cooper was mainly discussed. And the effect of by-reproduce SrF2 in non-superconductive Sr2CuO2F2+x on physical property of this material was considered. The experimental results showed that the valence state of Cu and the amount of SrF2 was mainly related with high Tc superconductivity of Sr2CuO2F2+x material, indicating a good method for improving Tc.

Structure and dielectric properties of 5 % Ce and Ca co-doped BaTiO3 ceramics were investigated. The site occupations and valence states were studied using XRD, Raman spectroscopy, SEM, EPR and dielectric measurements. The Ba/Ti ratio has dramatic effects on ceramic structure and properties. Two single-phase ceramics with Ba/Ti = 1 and 0.937 have tetragonal and cubic structure, showing diffuse phase transition and first-order phase transition behaviors, respectively. The former exhibit the site occupations of mixed Ca2+/Ce3+ at Ba sites and Ca2+/Ce4+ at Ti sites. Ce ions have priority over Ca2+ ions in entering Ti sites as Ce4+ when co-doping in BaTiO3, which will impede Ca2+ ions to be incorporated completely into Ti sites.

Hexagonal (β)-phase NaYF4:Yb3+, Er3+ upconversion nanoparticles (UCNPs) with and without an inert (undoped NaYF4) shell have been successfully synthesized and the effects of shell thickness on the upconversion luminescence (UCL) and temperature sensing properties were systematically investigated. It was found that the NaYF4 shell and its thickness do not affect the RHS values and thermal sensitivity, but can obviously improve the UCL intensity of NaYF4:Yb3+, Er3+ UCNPs. It implies that the core-shell structured NaYF4:Yb3+, Er3+@NaYF4 UCNPs with excellent UCL properties have great potential to be used as temperature sensing probes in biomedical fields, without considering the influences of the shell thickness on their temperature sensing properties.

Composite nanostructures of NaYF4:Yb3+, Er3+@Au have been successfully prepared by attaching gold nanoparticles onto the surface of NaYF4: Yb3+, Er3+ upconversion nanoparticles (UCNPs). NaYF4 inert shell was used to adjust the separation distance between gold nanoparticles and UCNPs. Effects of the gold nanoparticles on their upconversion luminescent (UCL), temperature sensing and photothermal therapy properties were systematically investigated. For all samples, a slight decrease of the UCL intensity was observed after gold nanoparticles attachment, suggesting that the nonradiative quenching effect is the dominant interaction between UCNPs and gold nanoparticles. However, the reduction of the UCL intensity is negligible due to the significant improvement of UCL properties by NaYF4shell. In addition, the gold attachment can obviously improve the photothermal conversion effect, but do not affect the temperature sensing properties of NaYF4:Yb3+, Er3+ UCNPs, indicating their high capability for multifunctional applications in biomedical fields.

The crystalline structure of the hexagonal Ba (Ti0.95Fe0.05)O3−δ(BTF) ceramic were directly measured using a temperature-dependent XRD technique. Different from the traditional structural transitions of rhombohedral-orthorhombic (−90 °C), orthorhombic-tetragonal (−10 °C), and tetragonal-cubic (i.e., the Curie temperatureTC= 130 °C) for BaTiO3, the phase transition from hexagonal to any phase above for BTF cannot occur atTCeven up to 300 °C. Increasing temperature cannot give rise to the occupation of oxygen vacancies by environmental oxygen absorbed. The lattice electro-neutrality maintained by Fe3+-VO-Fe3+defect complexes is predominant in BTF. This experiment clarifies the phase stability of the hexagonal perovskite structure aboveTCup to 300 °C.

It has been proved that the mold filling under low pressure casting can be described by the second order nonlinear differential equations characterized by damping oscillations. To obtain higher accuracy of the velocity field, the mold filling process with damping oscillations should be considered. A computational model taking the liquid level droping in the crucible into account based on two phase flow for filling process of damping oscillations is presented in this paper. Hydraulic simulation with the particle image velocimetry was adopted to verify the numerical simulation result. It is proved that the nemuerical simulation results used the presented model perfecly match with the particle image velocimetry results. Liquid level droping in crucible is the main reason for damping oscillations in mold filling. Velocity oscilations can be eliminated when the melt flow across a sudden expansion section. The detailed flow field based on the presented model can provide guidance to optimize the process parameters.

At present, digital printing technology develops rapidly, but in terms of color reproduction, digital proofing and the traditional mechanical proofing are different, it’s difficult to determine the color reduction according to the dot size, mainly manifested in the difference between the display color and the actual digital output color. In this paper, through analyzing the differences with color management technology, to keep consistency between the original display color and digital proof color as the goal. Through the study, mainly provides solutions for color consistency of digital proofing for paper packing.

The powder of Li1.4Al0.4Ti1.6 (PO4) 3 has been synthesized by a solid phase reaction between Li2CO3, Al2O3, TiO2 and NH4H2PO4. Sodium removal was studied in an extensive series of tests involving different ionic exchange process variables such as time and temperature. The results indicate that the Na/Li ion exchange reaction rate increased obviously with increasing temperature, and the Na/Li ion exchange kinetics process of Li1.4Al0.4Ti1.6 (PO4) 3 in lithium chloride solution could be shown approximately by the equation of JMAK. Furthermore, it is concluded that the Na+-removed materials obtained from NASICON-type ceramics synthesized can serve as selective Na+ absorbent due to its high selectivity and larger ion exchange capacity.

Cognitive radio can improve the spectrum utilization efficiency of spectrum band. So spectrum sensing is the key technology in cognitive radio network. Our main task is to design a cyclic detector with better detection performance than energy detector. This paper studies single-user spectrum detector in cognitive radio networks, including cyclic spectrum detector and energy detector. We firstly analyzed the energy spectrum sensing mathematic model for comparison, then we proposed the new simulation model and detailed simulation steps of this cyclic spectrum sensing detector. Simulation results demonstrate that the cyclic spectrum detector has better performance than energy detector while the SNR of channel condition is low.

Accurate estimation of array’s phase center is of great importance in navigation, tracking and other aircraft and aerospace systems. In this paper first the effect of reference point on the phase pattern of a uniform linear array is studied and the phase center of the array is estimated. Then the effect of beamsteering on the location of phase center in phased arrays is theoretically analyzed, finally numerical simulations are carried out and the results are in good agreement with the theoretical analysis.

The dq-axis inductances are important for the voltage decoupling control, torque estimation and steady-state performance analysis of a PMSM machine. In this paper, a measurement method is proposed based on the dq-axis instantaneous flux linkages calculation. The rotor is locked by a positive d-axis current, and then a proper AC current is assigned respectively to the d and q-axis reference current in order to cover the various current ranges. The instantaneous flux linkages are calculated by the integration of dq-axis current and voltage offline. Finally, dq-axis inductances are computed by the integrated flux linkages divided by the dq-axis current.

Comparative experiments on the ordinary steel fiber recycled concrete (SFRC) and roller compacted SFRC were carried out to research the fracture properties of roller compacted SFRC. The results show that compressive strength, fracture toughness and fracture energy of roller compacted SFRC increase with the increase of fiber volume fraction. Compressive strength increase with the increase of recycled aggregate replacement rate and fracture toughness decrease, however, Crack tip opening displacement has little changes and fracture energy features fluctuation with the replacement ratio of recycled coarse aggregates increasing. The rolled formed layers have significant influence on the fracture properties of SFRC. The fracture toughness of roller compacted SFRC is generally lower than ordinary SFRC and compressive strength is higher than ordinary steel fiber concrete for the same aggregate replacement ratio and fiber volume fraction. Fracture energy of roller compacted SFRC is higher than ordinary SFRC for the higher steel fiber volume ratio.

Numerical investigations of the abrasive influence on material removal efficiency of the micro-hole for AFM process is conducted in this paper. A three-dimensional model is constructed for this process. The abrasive with various particles volume fraction and different micro-holes with various diameters are selected in this study. The simulation results show that the lower particle volume fraction may be in favour of the metal removal uniformity, but the processing time will be too long if too low fraction is selected.

This paper, based on the EDA software platform and VHDL description method, introduces how to use the FPGA chip to control the multiphase stepper motor. This design, through automatic logic compilation optimization and simulation test and compile, finally completed the function of the stepping motor subdivision drive controller. By testing, it can achieve controlling positive &negative and subdivision for stepper angle.

Ultra-rapid annealing (URA) experiments were carried out to study the effect of heating rate on the recrystallization kinetics, grain size and Bake-hardening (BH) properties of Ultra-low carbon Bake Hardening Steel annealing with different heating rates followed by gas cooling (about 100°C/s) with variation of soaking times. It was shown that the degree of grain refinement is controlled by the parameters of heating rates and soaking time of the Ultra-rapid annealing cycles. For the steels investigated, the final grain size decreases with increasing heating rate and increases with increasing soaking time. The effects of dislocation density, varied by means of non-temper rolling reduction and a temper rolling reduction of 1% on the Bake-hardening properties were investigated within an aging temperature of 170°C for 20 min.

3G standards such as TD-SCDMA use multi-user detection (MUD) at the base station to combat multi address interference (MAI) and inter-symbol interference (ISI). We review Cholesky factorization and Schur algorithm for Zero Forcing Block Linear Equalization. We compare the solutions of different algorithm for ZF-BLE by computation, and analyze the complexity of those methods.

The surface of porous anodic aluminum oxide (AAO) film anodizing in malonic acid, which is characterized by Scanning Electron Microscope (SEM) and ImageJ software. There are disorderly tiny pores or stripes on the first once anodizing surface. Pore diameter, pore density and porosity are decided by the first anodizing process. With anodizing step increased, pore diameter of the membrane decreased. Two-step anodization improves the order of PAA membrane greatly, which is processed on the basic of the ordered array pits at the aluminum that is observed after removing membrane of the one-step anodization. According to the experiments, porous anodic aluminum oxide (PAA) was prepared in 1.0 mol/L malonic acid, its pore diameter increased and porosity decreased with anodizing voltage increased.

A kind of biosurfactant produced by ascendant strain BS01 was screened by detecting the surface tension , diameter of oil spreading. The structure of the biosurfactant extracted from fermentation broth of strain BS01 was verified by IR and UV .It has superior surfactive properties. Its critical micelle concentration (CMC) is 25mg/l and the surface tension is 29.6mN/m in CMC. The biosurfactant shows excellent antibacterial spectrum against agricultural pathogenic fungi and human pathogenic bacteria. Especially, it presents good antibiotic activity against Sclerotinia sclerotiorum ,staphylococcus aureus Rosenbach and pseudomonas aeruginosa .

The roadbed base of railway in Qarhan Salt Lake area entirely consists of brine saturated rock salt formations. However, low salinity brine would cause corrosion for roadbed and the stability of rock salt roadbed would be directly affected. In this paper, physical and mechanical properties of brine-dissolved rock salt have been tudied, as well as Computer Tomography was used to scan and analyze the meso-structural changes in rock salt before and after corrosion. The results show that density of rock salt would be changed obviously in the process of corrosion.The deriving or closing of meso-fissures in rock salt could been found with rock salt immigrating and corrosion damage.

Volcanic rocks of Yixian Formation were widely distributed in western Liaoning. The Yixian volcanic cycle of early Cretaceous in the Chaoyang basin can be divided into two subcycles. The first subcycle is composed of basalt, basalt andesite and andesite. The second subcycle is composed of trachyandensite and trachyte. The volcanic rocks are characterized by high SiO2, Al2O3, K2O and Na2O, and comparatively low TiO2 components. The volcanic rocks are obviously enriched in incompatible elements, and depleted in compatible elements. The ∑REE of volcanic rocks is high and rich in LREE. The spider patterns are the right-incline, there is a slight low Eu negative abnormality and low Ce negative abnormality. The characteristics show that volcanic rocks of Yixian Formation belong to the high-K calc-alkaline magmatic serious. Comprehensive study shows that the volcanic rocks of Yixian Formation were generated in response to lithosphere extension in the continent intraplate orogenic belt.

Based on 33-year typhoon information of South China Sea (SCS) in 1980-2012 and NCEP/NCAR reanalysis data, taking Climatology and Persistence (CLIPER) and earlier physical quantities predictors selected by Stepwise Regression (SWR) and Multidimensional Scaling (MDS) methods as model inputs, the Genetic Algorithm-Artificial Neural Network (GA-ANN) forecast model was built for typhoon gale. The forecast verification results for independent samples in MDS-GA-ANN model show that mean absolute error of 24h forecast for wind velocities at 36 grid points around typhoon centers from July to September is 1.6m/s. Using the same samples, the prediction results of MDS-GA-ANN models for independent samples were compared with that of traditional SWR models. Taking July as example, prediction abilities for 29 MDS-GA-ANN models (81%) among 36 grid points around typhoon centers are superior to that of SWR models; only 2 grid points of MDS-GA-ANN models are worse than that of SWR models (6%). Therefore, prediction ability for most of 36 grid points using MDS-GA-ANN models is superior to that of SWR models and can meet business requirements of meteorological stations at present.

This study investigated the wind turbine blade root bolt static strength using the full scale static test, selected the root bolts of 1/4 bridge strain gauge using the finite element analysis method and the dynamic and static strain instrument. The data of the stress loading combined tension and bending bolt were obtained.

Magnesium alloys are very biocompatible and show promise for use in implant device. The focus of this article lies in the evaluation of the degradation performance and biological response of a paclitaxel-eluting biodegradable stent based on WE43 magnesium alloy by in vivo and in vitro studies. The corrosion characteristics analyzed by immersion testing in phosphate buffered solution (PBS) for 24h. Severe corrosion took place reveal fast degradation, lead to the stent strut easily fracture during expanding. The chemical nature of this conversion in vivo was investigated by scanning electron microscope (SEM) equipped with energy dispersive spectrum (EDS). For the endothelial surface coverage and the microstructure of the stent were also investigated by SEM. The results show that the deployment of the stent in arteries was safe, endothelial coverage occurred above stent struts and between struts after implanted 6 weeks, and more slowly than stainless steel stent and paclitaxel-eluting stainless steel stent. The grains boundaries of the stents are easily corroded in vivo environment, which should strongly affect the radial strength and mechanical integrity of the stent, leading early recoil contribute to restenosis.

In this work, a general expression of the thermo-acoustic (TA) emission from nanocrystalline porous silicon (nc-PS) is derived by using a fully thermally-mechanically coupled multilayer TA model. This expression takes thermal, mechanical, and geometry properties of every layer in a multilayer structure, as well as the thermal contact resistances between layers into consideration and hence agrees well with the experimental results. Therefore, many fundamental problems in thermally induced ultrasonic emission from nanoporous silicon can be studied.

Aim at the characteristics of components made up the machine is able to maintain the assembly relationship, this paper put forward the concept of the component structure, discuss the condition of being a component structure. According to the phenomenon that the component structure can contain more fundamental component structure, Component structure was proposed by one or several structural units with three fundamental principles: Join the components structures into the assembly structure, join the level I components structural units to the assembly structure as the assembly structure, join the level II and above structural units providing independent component structure as the assembly structure. Discuss the component definition and classification of structural Unit, division rules and procedures of the component decomposition.

In the same conditions, the accidents of pressure vessel are much higher than other mechanical equipment. Therefore, the study on the pressure vessels in anomaly conditions and the dynamic response and tolerance capabilities of the structure not only helps to the research and development of warning surveillance and prevention technology about pressure vessels in anomaly conditions, but also contribute to the correct evaluation of the feasibility and reliability on the device of early warning monitoring system and the prevent technology. As pressure vessel is widely used and efficiency is enhanced, traditional failure analysis is restricted to test, analyze accidents, find out failure reasons and table proposals. It is realistic to make a modern design system for pressure vessels, judge failure reasons rapidly and table proposals. Keywords: pressure vessel; modern design; working characteristics

The superstructure and foundation of highrise are in a complete system of interaction. Taking the case of project, by comparatively analyzing the computed value which is calculated by applying the theory of interaction between superstructure and foundation and the measured value ,we find that the computed value neatly dovetails with the measured value.

Using the full-band CCD (PL4240 UV, FLI) and Yunnan Zhihai ultraviolet observation camera system (UVYNZH-II) shoot sweat fingerprints on A4 wrapper and A4 printing paper, to comparatively analyze the effects these two camera systems. The clarity and contrast of ultraviolet image captured from Full-band CCD is better than from UV observation camera system, but both devices are able to reflect the fingerprint ridge characteristics. For sweat fingerprints, it is better for the full-band CCD, but under good conditions for sweat fingerprints bridges, UV observation camera system can basically meet the requirements of sweat fingerprint UV shooting.

Based on the actual project example of high pressure gas pipeline crossing earthquake rupture area, the paper shows and explains the way to make stress analysis and strength checking calculation for the high pressure gas pipeline in the earthquake rupture area by the method of finite element.

The three-screw compressor is a special type of positive displacement compressors that has two or more intermeshing screws rotating axially to deliver fluids. Three-screw compressor depend mainly on master-slave screw meshing with each other forming seal cavity so as to delivery liquid from the suction to the outlet. So it is important to design the screw profile accurately to obtain a high volumetric efficiency of the screw compressor. Through the central rotor and idler rotors three-dimensional model, we can directly obtain the central rotor and idler rotors law Section Surface contour and longitudinal section Surface contour. At the same time, this method can also provide a reference model for access complex surfaces checking template.

Improving the productivity of CBM wells is one of the most emergency issues in the development of CBM. Preliminary characteristics of water discharge can indicate the productivity to some extent. Based on the data of 49 CBM wells in Fanzhuang Block, Qinshui basin, this paper makes research on the relations between the Preliminary characteristics of water discharge and CBM well production by theory of reservoir engineering. According to the index and quantity of water discharge, the CBM wells were divided into five types. Contrast this block, develop the I-type wells preferentially, reduce the fracture strength for the II-type wells, improve the fracturing technology for the IV-type wells, and shouldnt take the III & V-type wells into consideration generally.

The error correction capability of BCH is very strong, especially for the short and medium length of codes, which performance reaches the theory value. Besides, it has a strict algebraic structure, which plays an important role in the encode theory. But traditional serial BCH has a low throughput, so it cannot satisfy high speed communication. This paper designed a parallel synchronization encode and decode algorithm, and used FPGA to simulate. Experiment result shows that the proposed algorithm can satisfy the requirement of code rate and hardware resources consumption, so the algorithm has a very useful practical value.

Tractor electro-hydraulic hitch system is designed with force-position adjustment function. The method of force-position adjustment is proposed. Under the CCS development environment in DSP, system modules are designed according to the characteristics of TMS320F2812, including raise and drop modules, force-position adjustment module. The feasibility of the design is verified by system simulation.

Equipments for distribution automation terminal and the corresponding back-up power that can be cold started directly without heating equipments in natural environment at -40°C are developed to suit the extremely cold weather in Northeast China. The ultimate goal is to realize normal operation at a temperature ranging from -50°C to +70°C.

socarbostyril alkaloids is a kind of alkaloid does not contain basic nitrogen atoms and is represented by hydroxylated benzophenanthridone or isoquinolinone types of structure. The most widely known compounds of this group are narciclasine, lycoricidine , and pancratistatin. They have demonstrated to inhibite the proliferation of many human cancer cells, and at the same time have no affect on normal human cells under a certain dose, they have a high efficiency and low toxicity in antitumor area. Now this kind of compound has been a hot spot research to antitumor workers. The present paper reviews the origin and the antitumor function of the Isocarbostyril alkaloids.

In this paper, the deformation properties of AZ31+Sr+Y magnesium alloy sheets produced by twin-roll casting (TRC) and sequential hot rolling were studied by the tensile testing at a strain rate of 7×10-4s-1and various temperatures: room temperature (RT), 200°C, 300°C and 400°C, respectively. The result shows that the microstructure of AZ31+Sr+Y alloy was refined obviously by adding elements Sr and Y, the elongation of the alloy increased with increasing temperature, and the fracture behavior of the alloy changed from brittle fracture to ductile fracture with increasing temperature. During the process of plastic deformation of AZ31+Sr+Y alloy, the twin plays a leading role at room temperature; the dislocation movement is regarded as the main deformation mechanism at 200° C; at the higher temperature (above 300°C) the grain boundary slip (GBS) plays a dominant role .

Microneedle, as a novel way for transdermal drug delivery, due to its painless and minimally invasive, has recently attracted much attention. The present study investigated skin deformation and failure due to insertion by a single microneedle with nonlinear finite element method. The finite element model considered multilayered, non-linear and hyperelastic properties of the skin, and tissue failure was phenomenologically described by an effective stress failure criterion. The deformation and failure of skin and the force displacement behaviour of the microneedle are discussed. The numerical results show a good agreement with the reported experimental data. The performed study provided novel insights into skin failure due to insertion of microneedle, and provided useful information with which to optimise the microneedle design.

As the repaid development mobile phone and mobile internet, the mobile phone is considered as the import interface between brands and consumers by managers. Mobile advertising, Mobile advertising, which is defined as any form of marketing, advertising or sales promotion activity aimed at consumers and conducted over a mobile channel, is becoming the new promising marketing channel. Mobile advertising is getting more and more sophisticated. Thus, how to apply mobile advertising to increase advertising effect is an important challenge for CMOs. To help the CMO to understand the mobile advertising, this paper reviewed recent advances in mobile advertising researches.

To test the hydraulic steering by-wire system whether can achieve the ideal steering characteristics, firstly take experimental tests of the full hydraulic steering system, getting the transmission ratio curve. Then the simulation for the hydraulic steering by-wire system by MATLAB showed that simulation results combined with the test curve, the hydraulic steering by-wire system satisfy the requirement of vehicle working.

Laval nozzle is the commonly used device in rocket engine and aero engine. this paper, the numerical model is derived. The convergent section subsonic flow and divergent section hypersonic flow are simulated in dimensionless method. Reverting the dimension, the result can be seen that the analytical solution, the CFX simulation solution and the numerical are in uniform.

Through computer-related technologies, virtual reality allows the user to appreciate the induction of vision, auditory, tactile sensor and immersive feel in an interactive virtual environment. Because of the above-mentioned features, it has become one of the hot topics of the direction quickly. This paper discusses virtual reality simulation system, takes sports training simulation as an example, analyzes its key technologies and makes more people to understand the virtual reality simulation system. It provides some scientific ideas for the combination of virtual reality simulation with many other areas of development. The discussions about the key technology of virtual reality simulation system in this paper provide some reference for the development of many other cross-cutting areas combined with the virtual reality to a certain extent.

The purpose of this study is to investigate the extraction and separation of alkaloids from H.littoralis. Chopped bulbs of H.littoralis was soaked in a mixture of dichloromethane and methanol (1:1) for 24 h, ultrasonic extraction six times, then extracted with N-butanol to yield crude extracts. Three components were isolated from N-butanol extract of H.littoralis by Sephadex LH-20 and TLC. The compounds were identified by LC-MS, they are 5,6-dihydrobicolorine, Lycorine and 7-deoxy-trans-dihydronarciclasine.

The rational database including the distribution, changes and testing facilities status of temperature & humidity in tea garden is created using the MapInfo 9.5. A set of the tea garden wireless utilities is established using the ZigBee module. The temperature & humidity real-time monitoring system and early warning system for Frost Prevention is established using Mapbasic. This system can get real-time information of temperature & humidity of nodes in different locations and give frost warning early. The frost prevention fans can be timely started, once temperature inversion happens. At the same time, the manager of tea garden can realize real-time monitor of the work status and quick location of facilities with the help of GPS.

This paper proposes an adaptive power allocation in multiple-input multiple-output (MIMO) spatial multiplexing slow fading channels, which improves spectral efficiency and reduces the complexity of systems at the same time. Under the constraint of the same signal-to-interference and noise ratio (SINR) at each receive antenna, an iteration formula of power allocation algorithm for transmit antennas is derived. Besides, for a certain channel gain matrix, the same SINR value at each receive antenna is proved to have the limit value. The simulations of the proposed adaptive power allocation show that the algorithm is effective and can reach the convergence fast.