最新刊期
      期 1 ， 2011
      • Issue 1, Pages: 1-3(2011) DOI: 10.13890/j.issn.1000-128x.2011.01.001
        摘要：Introduction was given to the adhesion utilization control system of the high power AC locomotive HXD1C. And field sampled data of the adhesion utilization control for the locomotive HXD1C were fully analyzed, which demonstrates the effectiveness of the adhesion utilization control system and its capability of making use of adhesion in all weather.  
        关键词：HXD1C locomotive;adhesion utilization;adhesion utilization control;AC drive;freight locomotive   
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      • Issue 1, Pages: 4-5(2011) DOI: 10.13890/j.issn.1000-128x.2011.01.002
        摘要：The paper introduced the basic technology parameters of the 120 km/h high-power AC drive diesel locomotive. A new adhesion control method and principle was derived. The measured data wave was given, and the result show that the method improve the performance of the locomotive traction effectively and reduce slip/skid phenomenon significantly.  
        关键词：high power AC drive;diesel locomotive;adhesion control;adhesion factor;differential of the wheel acceleration;tractior motor   
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      • Issue 1, Pages: 6-9(2011) DOI: 10.13890/j.issn.1000-128x.2011.01.003
        摘要：This paper researched the dynamics characteristic of the locomotive with the drive gear by spring suspension and the locomotive with the drive gear by rigid suspension, and researched the strength of structure of the gearbox and suspension-beam for the drive gear with spring suspension by dynamical characteristic of the high-speed bogie with AC traction motor. The result is that the dynamics indexes of the locomotive with the drive gear by spring suspension should be excelled compare with the locomotive with the drive gear by rigid suspension; the drive gear with spring suspension has the technical advantage for high-speed locomotive, the main parts of the drive gear with spring suspension should be adapted for dynamical characteristic of the high-speed bogie and satisfy with structure strength.  
        关键词：electric locomotive;high-speed traction;bogie;spring suspension;drive gear   
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      • Issue 1, Pages: 10-13(2011) DOI: 10.13890/j.issn.1000-128x.2011.01.021
        摘要：For obtaining steady state, transient and dynamic characteristics, average state space method was proposed to the modeling and simulation analysis in DC/DC high frequency converter of 70 kW passive buffer type soft-switching isolated converter. Firstly, the converter equivalent circuit was established on the condition of considering the transformer leakage inductance, output filter inductor and capacitor equivalent circuit resistance. Secondly, analyzed the key voltage, current ideal waves in a cycle, and drew the equivalent circuits under different states. Thirdly, in order to obtain the small-signal transfer function in continuous work mode, the average and linearization method was to deal with the state variable equations. Last, double-loop control system was set up in accordance with the mathematical model, and MATLAB was used to verify the rationality of that model.  
        关键词：DC/DC high frequency isolated converter;average state space method;modeling;closed-loop control   
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      • Issue 1, Pages: 14-16(2011) DOI: 10.13890/j.issn.1000-128x.2011.01.004
        摘要：Based on the analysis of the mechanism and properties of the traction transformer inrush current , and specially on the characteristic of the CRH3 EMUs traction transformer, the simulation was carried out by the the MATLAB software, the result of the simulation in accordance with the actually technical parameter, which validated the model. Meanwhile analyzed the inrush current with Fourier method, and the result of the analysis proves that the method of EMUs traction transformer differential protection by estimation secondary harmonic proportion is possible.  
        关键词：traction transformer;inrush current;differential protection;EMU   
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      • Issue 1, Pages: 17-19(2011) DOI: 10.13890/j.issn.1000-128x.2011.01.005
        摘要：This paper studied the non-friction rotating permanent magnet eddy current brake technique, which was used on nonpowered vehicles. Based on the theory of eddy current brake, the rotating permanent magnet eddy current brake was designed according to the structure of CRH2 EMU’s trailer bogie. The dynamic analyses of rotating permanent magnet eddy current brake was made by ANSYS,the brake’s power at different speeds was calculated. At different numbers of pole pairs, circumferential distances of the pole, thickness of pole pad and gap widths of rotating permanent magnet eddy current brake, the running resistances caused by leakage of magnet field were analyzed. The conclusions got from this article provide some theory foundations for application of the rotation eddy current brake.  
        关键词：permanent magnet eddy current brake;ANSYS;magnet field;brake   
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      • Issue 1, Pages: 20-23(2011) DOI: 10.13890/j.issn.1000-128x.2011.01.023
        摘要：This paper introduced the networking problem of indigenous BCU for CRH2 EMUs and analyzed the communication mode between terminator and BCU. A communication gateway for indigenous BCU was designed and protocol conversion was achieved between terminator (HDLC) and BCU (RS485). The experiment which is based on import test bench verifies the integral function of the communication gateway.  
        关键词：HDLC protocol;RS485 protocol;optical fiber communication module;IP module;BCU;train communication terminator;CRH2 EMUs   
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      • Issue 1, Pages: 24-27(2011) DOI: 10.13890/j.issn.1000-128x.2011.01.006
        摘要：This paper researched the 110V power supply for electric locomotive, which used TI’s TMS320F2812 digital signal processing chip as the CPU and adopts the double closed-loop controlling (voltage loop outside, current loop inside). The message were transferred through the CAN bus and intelligent current-sharing of the parallel modules had been realized by using the software. The experiments show that the power with load run stably and current-sharing effects is well.  
        关键词：parallel redundancy;current-sharing;DSP;double closed-loop control;CAN bus;electric locomotive   
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      • Issue 1, Pages: 28-31(2011) DOI: 10.13890/j.issn.1000-128x.2011.01.007
        摘要：The fatigue damage of a freight car bogie frame was calculated according to the FKM-Guideline and the commercial software MSC.Fatigue respectively. From the comparison, it cought be concluded that the result of FKM-Guideline was bigger than that of MSC. Fatigue for welded components, while for non-welded components, the result was opposite. By analyzing the parameters of the FKMGuideline, the fatigue life assessment of bogie frames based on the FKM-Guideline has certain practical value.  
        关键词：FKM-Guideline;bogie frame;fatigue damage   
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      • Issue 1, Pages: 32-35(2011) DOI: 10.13890/j.issn.1000-128x.2011.01.024
        摘要：This paper took the Hall effect as a starting point to expound relationship of the Hall element structure, the driving circuit, the technical parameters, the pins and Hall iron core. At the same time, it cited living instances to perform verifications, further more, the key points about the application of the Hall in circuit sensor were presented. This paper provides the references to the application of Hall elements in circuit sensor design.  
        关键词：Hall effect;Hall element;technical parameter;current sensor;electromagnetic induction   
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      • Issue 1, Pages: 36-39(2011) DOI: 10.13890/j.issn.1000-128x.2011.01.008
        摘要：Structural characteristics of the different types of rubber bushing and its relevant productive technology were introduced. According to the working conditions of locomotive to select a perfect pressing structure which stiffness was analyzed by using FEA software. It’s shown that the method is quite feasible and correct by contrasting to the results of analysis and experiment. At the same time, design process and structure are determined.  
        关键词：rubber bushing;radial stiffness;torsional stiffness;FEA   
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        发布时间：2021-12-13
      • Issue 1, Pages: 40-42(2011) DOI: 10.13890/j.issn.1000-128x.2011.01.009
        摘要：Three chief factors had been analyzed: the length of guidance electromagnet, range of motion and pulling force of pendulum pole, adjacent bogie squeeze and stretch on the joint electromagnet. And based on the analysis, improved scheme was proposed. By keeping train tilting structune removing joint electromagnet, moderately reducing the length of bogie and guiding electromagnet, the improved vehicles can meet the requirement of smaller turning radius.  
        关键词：high-speed maglev train;turning ability;minimum turning radius   
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      • Issue 1, Pages: 43-46(2011) DOI: 10.13890/j.issn.1000-128x.2011.01.010
        摘要：This paper mainly introduced the signaling system, working principle and function of middle-low-speed maglev train. The signaling system design used an integrated idea, which had set automatic block, computer interlocking control and train control and protection functions, but didn’t has the automatic train supervision (ATS) and automatic train operation (ATO) subsystem. The basic function of automatic train supervision (ATS) was instead by interlocking work machine and the train drivers using artificial driving patterns. After 3 years of use shows that the system development is successful.  
        关键词：middle-low-speed maglev train;signaling system;microcomputer interlocking;radio cab signal;on-board security computer   
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      • Issue 1, Pages: 47-51(2011) DOI: 10.13890/j.issn.1000-128x.2011.01.011
        摘要：By analyzing conditions that urban rail vehicles in the traction power supply network occur the regenerative braking or resistor braking in electric braking process, and depending on the grouping of vehicles, lines, load, run strategy, operation plans, traction power supply and other basic conditions, based on single vehicle computing model and multi-vehicles power supply network model, electric braking energy distribution model were established and simulation were carried out. Simulation results showed that in the same line and vehicle conditions, the ratio of regenerative braking energy occupying the total braking was 80.1% when vehicle interval was 180 seconds, with the interval increases the ratio decrease. When the interval was 900 seconds the electric braking energy was almost consumed by braking resistor. The braking energy distribution model can provide theoretical support for a variety of urban rail transit braking energy recovery methods, but also offer foundation for selection of braking energy recovery device.  
        关键词：urban rail vehicle;regenerative braking;resistor braking;energy recovery;simulation   
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      • Issue 1, Pages: 52-56(2011) DOI: 10.13890/j.issn.1000-128x.2011.01.012
        摘要：This paper introduced technic characteristics of vehicle bogie of the second phase of Wuhan rail transit line 1, which included bogie structure, main characteristic and technic parameters. The calculation results of the strength on important components frame,axle, traction device and vehicle dynamics performance had been introduced. The result meets the standard requirements.  
        关键词：Wuhan rail transit;bogie;technic characteristics;technic parameters;strength calculation;vehicle dynamics performance   
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        发布时间：2021-12-13
      • Issue 1, Pages: 62-65(2011) DOI: 10.13890/j.issn.1000-128x.2011.01.022
        摘要：This paper briefly introduced the EMC requirements of AC drive electric locomotive made in China and basic method of achieving EMC. The EMC technical specification was made and implemented whith was effective and feasible through local test of 7 200 kW and 9 600 kW AC drive electric locomotive had also been put forward.  
        关键词：high power AC drive electric locomotive;EMC;main converter;grounding;cabling;cross-interference;radiant emission   
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      • Issue 1, Pages: 66-69(2011) DOI: 10.13890/j.issn.1000-128x.2011.01.016
        摘要：A new method for image recognition of train brake shoe based on edge moment invariants matching algorithm had been researched. The dynamic brake shoe images were taken by a vision sensor while the vehicle was moving. Then the statistic of brake shoe image invariant characteristics of rotation, scaling, and shift transformation were applied as the main features to automatically recognize the brake shoes with complicated background. With the presence of the characteristic similarity between the brake shoe surface and the wheel of vehicle, asymmetry of gray distribution of brake shoe images, object variation and occlusion of vehicle brake shoes, an improved moment invariants based on the edge-matching algorithm was proposed to recognize the brake shoe shape and analyze the brake shoe characteristics. The existing moment invariants algorithm was modified using the origin moment instead of central moments, and selected four lower order moments as the feature variable to reduce the calculation error. The experimental results show that the proposed method is effective for solving the above problems. The proposed algorithm can recognize the vehicle brake shoe automatically and can provide an effective way to solve the technical problems in long-standing recognition of the moving brake shoes.  
        关键词：edge moment invariants;vehicle brake shoe;image recognition;matching   
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