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Abstract: In view of the speed control problem of the linear permanent magnet synchronous motor ( L.PMSM) ,which is viewed as an energy-transformation device,from the viewpoint of energy shaping,applying port-con-trolled Hamultonian with dissipation and passivty-based control theory,the port-controlled Hamltonan modelof LPMSM is deduced. Based on the Hamiltonian structure,the desired Hamiltonian function of the closed-loop system is given,and the speed controller is designed by using the method of interconnection and dampingassignment. In the design,the Hamiltonian function is used directly as the storage function,and the systemcan achieve the required performance and bring more definite physical meaning on the condition of satisfyingpassivity. The simulation results show that the closed-loop control system can respond quickly to changes inload resistance and has good robustness.

Abstract: Focusing on the target tracking problem in resource-constrained wireless sensor networks,a novelenergy-balanced optimal distributed clustering mechanism is adopted by introducing an energy-balanced indexbased on the standard deviation of residual energv of nodes. Then,it is transformed into a multi-obijective con-strained optimization problem,and a binary particle swarm optimization algorithm is employed to solve thisproblem. Simulation results in Matlab environment show that the energy-balanced optimal distributed clustering mechanism guarantees energy balance and tracking accuracy comparing with the clustering mechanisms respec-tively based on the energy consumption and the extended Kalman filter,and that it improves the network life-time of nearly 2-fold,effectively prolonging the network lifetime.

Abstract: The variation of temperature may influence the measuring accuracy of electronic transformer.500kVGIS electronic combined transformer is usually arranged in the open air,so the temperature will rise because offactors such as resistance loss,sun exposure,etc,even exceed the permitted temperature in practical opera-tion,which will influence its work performance. To analyze its loss and heat accurately and ensure the safetyand reliability of its operation,a fluid-thermal coupled solution model was established by using finite elementmethod,which calculated and analyzed the distribution regularities of the fluid field and thermal field in con-sideration of factors such as sun exposure,shell current circulation,gas flow and gravity. The results showthat thermal field distribution has the geometric regularity of basic symmetry on both sides and upper tempera-ture is higher than the lower temperature. The highest temperature appears on the top of the conductor and thelowest temperature appears directly below the conductor. The conclusions can provide some reference for theheat dissipation design of electronic transformer.

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Abstract: In order to solve the problem of traditional iris recognitions focusing on feature extraction,a newmethod focusing on pattern matching was proposed,which was named iris recognition method using supportvector machine ( SVM) and Hamming distance.Firstly,normalization was used to process the iris positionwhich was located in the eye images.And then Log-Gabor filter was used to extract the features. After obtai-ning iris feature codes,SVM and Hamming distance were used to classify the iris features. Experiment resultson the CASIA iris database showed that recognition rate of this method reached 99.63%,false acceptance rateand false rejection rate were reduced to 0.02% and 0.35% compared to the classical recognition methods.

Abstract: In order to improve the nap efficiency for students and office workers and reduce traditional sleepmedical sleep monitor inconvenience to users,an intelligent sleep awake timer was designed using infraredpulse sensor HKG-07A. This instrument realizes the control system using single chip microcomputer only withreal-time monitoring finger pulse signal. The support vector machine (SVM) algorithm was adopted to buildthe database of personal sleep state levels ,then the sleep status was predicted and classified adaptively. Finally,the functions of alarm and wakeing up were realized in combination with timing and voice modules.

Abstract: In this paper,the temperature field of six-ring redundant axial magnetic bearing is simulated andcalculated by ANSYS Workbench and the reasons that result in the temperature rise of six-ring redundant axialmagnetic bearing are discussed. What ’s more,the influence of some parameters such as the magnetic circuitarea,the side wall of magnetic circular,rotating speed on six-ring redundant axial magnetic bearing are ana-lyzed and the structure design and calculation methods of temperature rise are put forward in this paper. Theresults show that,the structure of six-ring redundant axial magnetic bearing has great influence on the temper-ature rise of rotor. When the magnetic circuit is designed,the magnetization of rotor should be avoided. Thereconstruction of failure has small influence on the temperature rise of rotor,which can be ignored. Comparedwith the two-ring redundant axial magnetic bearing,the six-ring redundant axial magnetic bearing has higherreliability,mechanical property and preferable thermal characteristics.

Abstract: A pure electric vehicle with a fixed speed ratio was changed into two gear transmission scheme.Thematching method of main parameters for powertrain components was analyzed based on specifications of vehicleperformance.In order to prove that the parameter matching is reasonable,the dynamic shift schedule and the e-conomy shift schedule were formulated.Through the vehicle performance simulation platform which was estab-lished under Matlab/Simulink,the vehicle dynamic performance and the driving range under the different shiftscneaue were simuLalea. Ine simuaion resuIs snow nat ne parameter maicnng is reasonane,ana tne powerperformance and the driving range can meet the design requirements.The driving range of the NEDC conditionunder economy shift schedule is 0.14% higher than under the dynamic shift schedule. The acceleration time in100km under the dynamic shift schedule decreased by 6.02% than under the economy shift schedule.

Abstract: For the non-linear and the non-stationary characteristics of gear faults signal,this study adopts thelocal mean decomposition ( LMD) combined with the sample entropy method to extract fault features.With themoving average method to construct the mean function and the envelope function,the original signal is decom-posed into a series of components PF. Then by eliminating the meaningless components so that the componentsincluding real status information could be selected to calculate sample entropy.The sample entropy changedregularly with different fault signals’PF,and accordingly the sample entropy could be used as elements offault feature vector. Through experiments simulated under gear normal,tooth root cracked,tooth broken andmissing teeth conditions,then compared the classification results of LMD-approximate entropy with LMD-sam-ple entropy,and eventually it is proved that the LMD-sample entropy is better than the LMD-approximate en-tropy in distinguishing these four typical conditions.

Abstract: The shift quality is always the important research and development content of variable transmission sys-tem for vehicle.With the research object being integrated transmission system of tracked vehicle composed ofhydro-mechanical continuously variable transmission and hydro-mechanic differential turning mechanism,after an a-nalysis of the evaluating indicators of shift quality,and in consideration of the working characteristic of farm trackedvehicle,it is put forward that the dynamic load coefficient and shift time are as the evaluating indicators of shiftquality test.The test bench is made up of driving system,measured system,load simulation system and observingand controlling system etc.The LR6105ZT10 diesel engine acts as driving system.The CW150 electric eddy currentdynamometer electro-hydraulic proportional control disc brake act as the load simulation system.The observing andcontrolling system is mainly made up of industrial control computers. The calculation models of engine and load ofintegrated transmission system are established.The turning load coefficient is adopted to express the two side loadchange relationship of integrated transmission system of tracked vehicle. The controlling method of engine and reali-zing method of load on test bench are given. As the example for F4 switching F5,the test research of shift processof tracked vehicle based on integrated transmission in turning conditions was carried out.

Abstract: Idle vibration of automotive cab system is an important part of vehicle NVH performance. In orderto meet the requirements of NVH, the dynamic characteristics of the practical constraints of Roewe 950 cabsystem which consists of air conditioning system assembly,a pedal assembly,steering column assembly,as-sembly,instrument panel console assembly,electrical wiring system are studied using random white noise,pe-riodic scanning incentive,pulse excitation ( hammer) to the modal analysis of the cab system and sub struc-ture,through the PolyMAX algorithm to obtain the first three natural frequencies,damping and mode.Com-parison and analysis of the modal parameters obtained from random white noise excitation is best,and im-proved properties of the sub structure,so as to avoid the excitation frequency of the vehicle.

Abstract: A way of tool axial dispersion was presented,and then each discrete unit of the variable helix cutterwas approximately simulated to be variable pitch cutter. Thus variable delay differential equations were trans-ferred to multi-delay differential equation. And the stability prediction model of variable helix milling was builtbased on the original ZOA method. Through comparisons with prior works,the prediction results are in good a-greement about 100% whether normal or variable helix cutter. Two methods were used to simulate. The calcu-lation time of the original method is more than 92 s,but for the proposed method is below 20 s.The resultsshow the proposed method can save computational time comparing with the original method. And the resultscould provide reference for the selection of reasonable processing parameters and chatter prediction in actualprocessing.

Abstract: In view of the bus electric power steering (EPS) controller based on the steering torque and speedexpert system or look-up table is used to produce control signal,which can not effectively reflect the currentsituation of the axle load and its adaptive performance is poor.Based on fuzzy algorithm principle,this studydesigned a control method of circulating ball type EPS which is suitable for bus.Through the establishment ofthe EPS system dynamics models,this paper shows the control principle of the servo system;through the upperand lower control strategy research of the assist motor current,system control scheme is determined in whichcoefficient k is decided by associating load and speed;based on MATLAB Fuzzy logic toobox Fuzzy controlleris established.The relevant rules completely cover the original control area and the coefficient h follows thechange of load reflect well.The simulation based on ADAMS shows that when load changes from no load to fullload at 35 km/ h,the driver’s steering force reduced by 65% and the largest steering force decreased by 5 Ncompared to the original control system. Servo torque effectively reflecting the load change and the steering per-formance tuns good.

Abstract: A thermodynamic model is established to make a theoretical analysis on conventional compressionrefrigeration systems ( CRS ),throttling losses under various operating conditions are simulated with MatlabR2010a.R134a is chosen as refrigerant in the model and its thermo-physical properties are obtained fromREFPROP 9.0.The results show that:1. throttling losses in CRS accounts for 13 to 31.9 of compressor pow-er; 2.throttling losses of double temperature CRS are about 50% higher than that of the single temperatureCRS; 3.throtling losses change with operating conditions. According to the characteristics of CRS, three com-monly used ways to recover throttling losses are analyzed. COP of C/ERS is simulated under various operatingconditions and compared with the simply recover throttling losses scheme,the results verify the feasibility of u-sing ejector in CRS.

Abstract: The purification of domestically commercial dye for digital inkjet printing has an important signifi-cance since it mainly relies on the import at present. The separation performance of the NF membrane with dyedesalination prepared by our research laboratory was evaluated in pilot scale. For the mixed solution of reactivered/ NaCl/water,the rejection of reactive red by the membrane was higher than 99.5 %,meanwhile the rejec-tion of NaCl by the membrane was negative,and also the permeation flux is higher than 35 L ·m ^-2·h ^-1.MPa ^-1. The permeation flux of membrane increased with the operating differential pressure,but the selectivityof membrane decreased slightly. The results show that the desalting efficiency of organics can be improved bysimultaneously introducing positive and negative charge in membrane.

Abstract: In order to know the adhesion between natural asphalt and aggregate,two types of base asphalts andthree kinds of typical aggregates were selected.The adhesion between asphalt and aggregate were tested usingphotoelectric colorimetric method with dfferent doses of natural asphalt into base asphalt.The test results werecompared with that of boiling method. And the relation between adhesion rate and adhesion level was estab-lished. Meanwhile water stability of asphalt mixture through immersion Marshall test and freeze-thaw splittingtest were studied.Test results indicate that asphalt-aggregate adhesion can be analyzed quantitatively by photo-electric colorimetric method,and the optimal dosage of natural bitumen can be determined more accuratelyfrom the standpoint of adhesion.The adhesion may be improved significantly after base asphalt mixed with nat-ural asphalt.But the improving degree is different with different base asphalt and aggregate.The test results ofboiling method,immersion Marshall test and freeze-thaw splitting test verified the reliability of photoelectriccolorimetric method.

Abstract: Abstract:With the aim at exploiting the magnetic properties of the rare earth permanent magnetic alloy of Nd_8.5,Fe₈₄Nb_0.5,Zr_0.5B₆,Cu_0.5,we prepared ribbons deliberately at different quenching rates and then particularlyinvestigated the effect of quenching rates and annealing technique for crystallization on the magnetic propertiesof the alloy. The result shows that rapid quenching rate has great effect on the magnetic properties of the alloy.The optimum magnetic properties of the alloy are obtained at the rapid quenching rate of 20 m/s. When thecrystallization temperature is too high or the time too long, the grain of crystallization phase becomes oversizedand the specific surface area of the grain is reduced. When the crystallization temperature is too low or thetime too short,the crystallization process is incomplete,which leads to the less precipitation of soft phase andhard phase and much residue of amorphous phase,and thus exchanging coupling between soft phase and hardphase is impeded,deteriorating the improvement of magnetic properties of the alloy. The alloy prepared at thequenching rate of 20 m/s and treated by adequate crystallization technique exhibits the optimum magneticproperties,which are remanent magnetism B_r=0.72 T, coercive force H_e =380.98 kA/m and maximum mag-netic energy product (BH) max= 103.72 kJ/m³,respectively.

Abstract: The calculation of dynamic response and seismic safety evaluation of a high CFRD on alluvium de-posit subjected to seismic excitation of different transcendental probabilities were carried out,with emphasis onthe seismic response characteristics of dynamic displacement,acceleration,dynamic stresses of face slab andliquefaction of alluvium deposit under strong excitation. The results show that dynamic displacement,accelera-tion,dynamic stresses of face slab and liquefaction degree of alluvium deposit will increase gradually with theincreasing of seismic wave peak ,but the acceleration magnification will decrease.The seismic safety of dam isstill within a normal range even for transcendental probability 2% in 100 years.

Abstract: According to expansion air flow,expansion-side inlet pressure,inlet temperature of expansion side,expansion side outlet temperature,boost pressure and expander outlet end speed associated with operatingcharacteristics of booster expansion turbine for cryogenic air separation unit,research about soft sensor model-ing methods is conducted.Regression mathematical models from the operating data of unit 1" and 2* being de-bugged for an oxygen company are estimated and predicted for operation characteristic parameters relationship. The results indicate that the accuracy of the mathematical model is better,precision mathematical model con-sisting of nine equations resulting in at least more than 98 % . The proposed method can be used to: predict theexpansion end-side outlet temperature by expansion of the air flow,the expansion end of inlet pressure and theexpansion inlet temperature; estimate expansion side flow by expander end inlet temperature,the expansionoutlet temperature,and expansion side inlet pressure; predict speed by expansion side flow,expansion sideinlet pressure and expander end inlet temperature;predict booster end outlet pressure by speed;predict ex-pansion side inlet pressure by booster end outlet pressure.

Abstract: On the basis of N-Nakagami fading channels，the average symbol error probability ( ASEP) andoutage probability ( OP) of mobile wireless sensor network system employing switch-and-stay combining( SSC) and selection combining ( SC) are investigated in this paper. Based on the moment generating function(MGF) approach,the exact ASEP expressions are derived for several modulation schemes，including phaseshift keying ( PSK ),quadrature amplitude modulation ( QAM ),and pulse amplitude modulation ( PAM).The exact closed-form OP expressions are also presented. Then the ASEP and OP performance under differentconditions is evaluated through numerical simulations,and the accuracy of the analytical results is verified.The simulation results showed that: the ASEP and OP performance is improved with the diversity branches andthe fading coefficient increased ,while the fading factor decreased.

Abstract: In order to overcome the shortcomings of current automatic recognition schemes applied to mechanicalgauges including huge computing quantity,calibration based on multi dial’s images,this paper proposes a rotationcenter acquisition method based on improved Camny edge detection operator,which can acquire rotation center aswell as radius quickly based on single dial image. and designs hough transform algorithm passing by a specifiedpoint based on precondition that dial’s pointer centerline and rotation center locate on same line,which decreasesdetecting time significantly. Design principle and time complexity analysis of algorithms are introduced in detail.Experimental results demonstrate the algorithms stable with low computational complexity,detecting speed is 4 ~5times faster with memory space reduced. All of which verifies algorithms’ possibility in engineering application.

Abstract: The heterogeneity between different ontologies has seriously affected the sharing and reusing ofknowledge.For this purpose,this paper presents an ontology mapping method based on multi-Matchers,called OM-matchers.During the process for creating mapping between ontologies,OM-Matchers firstly extractsthe corresponding types of information,with the help of multiple matchers.Then,all the matchers calculatesimilarities for the concept pairs,in which concepts are from different ontologies.Finally,the similarity matrixfor ontologies to be mapped is generated,and the iterative strategy is used to accomplish the work for ontologymapping.In order to verify the feasibility and effectiveness of OM-Matchers,this paper applies benchmarks,which is the subset of the shared ontology sets in OAEI,to test OM-Matchers.Experimental result shows thatthe method OM-Matchers can be used to create mapping between heterogeneous ontologies effectively.

Abstract: Transcription factors can be combined with the special DNA sequence that can control gene tran-scription process.The special DNA sequence is called the motifs.The motif identification is to find a set ofDNA fragments with both similar functions and similar forms. It plays a crucial role in the research on thestructure and function of genes.The problem was converted to the model which can be processed by AP cluste-ring algorithm.Then we get steady candidate motifs by using AP clustering.Finally we use the greedy algo-rithm to refine the clustering results.We can get a group of candidate motifs set,evaluate candidate motifs setby information content and output the optimal motif set.Thereby the new algorithm is designed for the prob-lem. The experimental results on both simulated data and real data demonstrate the validity of the proposed al-gorithm.

Abstract: In order to predict the reliability of the coal mine water disasters emergency rescue system effectively,this paper establishes the stability index system from the view of mid-control and dynamic analysis.At thesame time, as the coal mine water disasters emergency rescue system is complex and the related data is diffi-cult to get,this paper puts forward a forecasting model of the stability of the coal mine water disasters emergen-cy rescue system on the basis of improved particle swarm optimization and support vector machine.The predic-tion results will be more accurate through the optimization of the parameters of SVM based on improved particleswarm algorithm. Finally,the model is proved to be effective through the case experiment.

Abstract: This paper proposes a hybrid heuristic algorithm combing variable neighborhood descent search withgenetic algorithm ( GA_VND) to solve vehicle routing problem with simultaneous delivery and pickup. By theuse of the initial populations generated randomly,the weak feasible solutions are produced by the crossoverand mutation operators of genetic algorithm. And then,the best of them was selected as initial solution of vari-able neighborhood descent algorithm. Finally,in the process of the variable neighborhood descent search, twodifferent neighborhood structures are used to search the locally optimal solution. The simulation results showthat GA_VND can update 8 better solutions in the 54 best known solutions,which illustrates that GA_VND isan effective method for vehicle routing problem with simultaneous delivery and pickup.

Abstract: This paper analyzes the hierarchical mobile routing protocols,and puts forward a new optimized mo-bile routing protocol. By using hierarchical mobile IPv6,the new protocol can effectively reduce the distanceand the number of binding update message to send,so as to reduce the signaling load and the delay of bindingregistration in the network. At the same time,by using fast switching and parallel operation in the fast switc-hing ,most of time delay and packet loss rate of the standard MIlPv6 can be eliminated. By using the edge rout-er, it can optimize routing and solve the problem of congestion of the MAP. Finally,through the analysis oftheoretical performance and the verify of the simulation experiments in NS2,it shows that the new optimizedmobile routing can improve the performance of the network,reduce the packet loss rate and handover delay.

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