最新刊期
期 3 ， 2014
- 摘要：Classification and current researching situation of PMSM was reviewed. Characteristics and shortages of PMSM wereanalyzed, and situation and focus of PMSM control technology was introduced in emphasis. Application field and development trend ofPMSM driver system was discussed, and a viewpoint was carried out that PMSM direct-driving system was the development trend ofPMSM driver system, which exploited the ultimate advantaged of PMSM.关键词：PMSM;PMSM control;direct-driving system;current technology situation;study focus;technology application;developmenttrend
- 992
- |
- 9
- |
- 0
发布时间：2021-12-13 - 摘要：Composition of mid-low speed maglev transportation system was introduced, focusing on analysis of the present status andkey technical features of this system which made it different from traditional rail systems. Engineering application situation and wideapplication prospect of mid-low speed maglev transportation system were expounded.关键词：mid-low speed maglev;transportation system;technology characteristics;development situation;engineering application
- 442
- |
- 4
- |
- 0
发布时间：2021-12-13 - 摘要：The research and development of the amorphous alloy motor were summarized. Recent advances made in the area ofamorphous alloy motor were also mentioned. Core material choosing, process for amorphous alloy motor and the application problem and keytechnology of amorphous alloy motor were discussed. Finally, the direction of future research for amorphous alloy motor was looked forward.关键词：amorphous alloy;motor;stator;iron loss;high-efficiency and energy-saving;key technology;research advance
- 1407
- |
- 7
- |
- 0
发布时间：2021-12-13 - 摘要：Safety requirements and safety design hierarchy of high-speed train network control system were introduced. RAMSengineer was briefly stated. Safety design of the high-speed train network control system were well described from safety requirement, safetyqualification assignment and evaluation, fault tree analysis and DFMEA analysis , and some thought and forecast were proposed for Chinatrain network safety.关键词：high-speed train;network control system;RAMS;safety
- 1038
- |
- 9
- |
- 0
发布时间：2021-12-13 - 摘要：Based on the mathematical model of permanent magnet synchronous motor, id=0 and the phase space vector pulse widthmodulation were introduced to control the motor. For the requirements of the high-performance servo system, an integral sliding modecontroller was proposed to improve the gain of the switching control integral segment. Simulation results based on MATLAB/SIMULINKshowed that the proposed system had smaller overshoot, faster response, little chattering and stronger robustness by compared to traditionalintegral sliding mode control.关键词：PMSM;SVPWM;integral sliding mode control;AC servo system
- 1015
- |
- 2
- |
- 0
发布时间：2021-12-13 - 摘要：Dual-source electric shunting locomotive has two bogie schemes: one with soft primary suspension and hard secondarysuspension, another one with hard primary suspension and soft secondary suspension. Through dynamics performance comparison analysisof the two schemes, and considering operation condition, bogie scheme with soft primary suspension and hard secondary suspension wasdecided. Through the analysis of the influence of secondary spring lateral and longitudinal arrangement on bogie performance, lateral arrangementsecondary spring was selected. Finally, the adaptability of a variety of traction devices in the dual-source shunting locomotive wasanalyzed, and the tilted traction rod mounted on the end of the bogie frame was adopted.关键词：shunting locomotive;bogie;structure design;primary suspension;secondary suspension;traction devices;dynamics;dual-source
- 1017
- |
- 2
- |
- 0
发布时间：2021-12-13 - 摘要：By analyzing the characteristics of every type of messages, two bandwidth allocation strategies of MVB aperiodic communicationwere proposed , and relevant formula was derived. In combination with the scheduling principles of aperiodic messages, theoptimized bandwidth allocation strategy were researched and compared. The real-time performance of aperiodic messages had greatlyimproved after the optimization of bandwidth allocation.关键词：MVB;aperiodic message communication;bandwidth allocation;periodic data;aperiodic data;bandwidth availability ratio
- 936
- |
- 2
- |
- 0
发布时间：2021-12-13 - 摘要：In order to solve the problem of intercommunication and interconnection between FIP network control system of heavy loadlocomotive or subway train and on-board electrical equipments with CAN interface (such as brake control unit, traction control unit, etc.), AWorldFip-CAN gateway was designed, which was used for implementing the data conversion between WorldFip and CAN bus communication.This paper firstly introduced gateway’s architecture and reliability design, and then described the design method of gateway’s hardware andsoftware in detailed. Finally, a test was carried out to examine this gateway’s performance of intercommunication and interconnection viaWorldFip network test platform. The test result shows that the gateway is able to realize communication data transmission in real time andreliably between CAN and WorldFip network. The research and development of this device provide a strong support for promoting thelocalization process of on-board electrical components based on WorldFip network in the field of China railway train.关键词：WorldFip;CAN;gateway;interconnection;intercommunication;field bus;network technology
- 496
- |
- 2
- |
- 0
发布时间：2021-12-13 - 摘要：In order to study the longitudinal impulse problem on 20 000 t heavy haul combined train in China, the kinetic model ofcombined train with an example of coal dedicated gondola car of C80 series was established by Matlab/Simulink module. It was mainlyanalyzed that effects of longitudinal impulses under emergency braking conditions for combined train with 1+2+1 type, and types ofcombination, response time of controlled locomotives, structure of vehicles, hook buffer devices, operating conditions and other factors weretaken into the consider. The result indicates that types of combination have a large influence on coupler forces with sizes and distributions.Also shorter response time of controlled locomotives, using traction rod friction rubber buffer can help to reduce coupler forces. Last but notleast, there is the largest coupler force under emergency braking conditions with lower speed and steeper down gradient.关键词：20 000 t heavy haul combined train;longitudinal dynamics;coupler force;acceleration;longitudinal impulse
- 838
- |
- 3
- |
- 0
发布时间：2021-12-13 - 摘要：Considering the distribution of adhesive force varying with the axle load, the arithmetic of axle load transfer should beimproved. Taking a six-axis and a four-axis locomotive as cases respectively, arithmetic with considering and no considering adhesive forcedistribution was compared, the results of which showed that max wheel-set load-reducing ratio was different, and the former arithmeticreflected the real condition of the axle load transfer better. With the improved method, the optimum traction height of the both locomotiveswas optimized.关键词：locomotive axle load;axle load transfer;wheel-set load-reducing ratio;axle control;traction height;adhesive force
- 733
- |
- 2
- |
- 0
发布时间：2021-12-13 - 摘要：To ensure the reliability and EMC for railway locomotive electric & electronics equipment, electrical bonding principle andbonding resistance were analyzed in detail, and technique factors and implementation requirements affecting bonding were proposed, whichprovides detailed and feasible method and idea for rail locomotive electric & electronics products bonding design.关键词：rail locomotive;EMC;bonding;cable;shielding;connector;electrochemical corrosion
- 958
- |
- 2
- |
- 0
发布时间：2021-12-13 - 摘要：Main characteristics and innovation of THG5 high-voltage disconnecting switch in the cabinet of HXD1D locomotive weredescribed particularly. The structure and working principle were introduced, and correlative parameter about high-handed electric, circuitcontrol and pneumatic drive was calculated. The disconnecting switch passed type test and circulate assess, and realized batch production.关键词：HXD1D locomotive;high-voltage disconnecting switch;optimization design;temperature rise
- 833
- |
- 4
- |
- 0
发布时间：2021-12-13 - 摘要：To guarantee quality of electronic products, a Fault Tree Analysis (FTA) method was proposed. According to components,application environment conditions and maintenance requirement etc of products, with analysis from up to down and calculation from downto up, products reliability was obtained. The reliability calculation method not only adapted the qualified analysis for existed products, butalso could be used for reliability design at beginning of product development.关键词：FTA;electronic product;reliability;failure ratio;Fault Tree+ software
- 861
- |
- 3
- |
- 0
发布时间：2021-12-13 - 摘要：HXD2 and SS4B were selected as the representative of AC drive and DC drive electric locomotive respectively. Based on theactual measured data, their electrical load performance were compared in four aspects, i.e. working principle, power factor, harmonic currentand the locomotive consumption. The technical advantages of AC drive electric locomotive were illustrated. With the production halts of DCdrive electric locomotive and more and more AC drive electric locomotive putting into service, the properties of high power factor, lowharmonic current and regenerative braking ability should be fully considered when designing the traction power supply system of electricrailway. Meanwhile, it was also necessary to know the harmonic characteristics of AC drive electric locomotive in detail so as to provide thebasic data for the designing of traction power supply system.关键词：SS4B electric locomotive;HXD2 electric locomotive;power factor;harmonics;AC drive;DC drive
- 931
- |
- 4
- |
- 0
发布时间：2021-12-13 - 摘要：Aimed at the deficiencies of original passenger information display, the new-generation passenger information display wasdesigned with improvement of performance parameter, display effect, structure design, power consumption and maintenance, which waswidely used in the CRH380AL EMUs for satisfying the higher requirement.关键词：CRH380AL EMUs;passenger information display;low power;module;FPGA
- 876
- |
- 2
- |
- 0
发布时间：2021-12-13 - 摘要：Aimed at the problems of conventional dynamic-pneumatic blending algorithm in brake force increasing , brake level varyingand electric turning to pneumatic brake stage, a new dynamic-pneumatic blending algorithm based on train network was provided without anadditional delay ,redundant pneumatic brake and excess jerk limit, which improved dynamic-pneumatic blending control performance greatly.关键词：brake control;dynamic-pneumatic blending algorithm;electro-dynamic brake;electro-pneumatic brake;time delay of datatransfer;jerk limit
- 749
- |
- 2
- |
- 0
发布时间：2021-12-13 - 摘要：New-generation locomotive display platform LCD display control system based on FPGA was introduced, hardware andlogic circuit design idea of which was described. After test, the LCD display control system was successfully applied in TPX21 series display.The LCD display control system has the features of simple hardware and portable logic software, which adapted various applications witha little modification such as different display frequencies, different resolution LCD display.关键词：FPGA;locomotive display platform;LCD;controller;TPX21
- 919
- |
- 2
- |
- 0
发布时间：2021-12-13 - 摘要：With theoretical analysis of straddle-type monorail vehicle curve-through performance, conception of ’Oriented torque’ withits evaluation criterion used to rate the oriented performance was presented. With the single factor sensitivity analysis and ADAMS virtualsimulation technology, impact factors of oriented torque were found, and based on vehicle design difficulty and optimization efficiency, themost impact factor was selected. Based on the secondary suspension parameters of vehicle and by using the improved genetic algorithm,oriented torque objective function was optimized, and a group of optimal parameters of monorail vehicles were sought.关键词：straddle-type monorail vehicle;oriented torque;single factor sensitivity analysis;optimization
- 814
- |
- 2
- |
- 0
发布时间：2021-12-13 - 摘要：Because of the speed characteristics of B-type high-speed urban transit train, overhaul and erection maintenance period of thetrain could not match planned operation mileage well. According to the operation situation of B-type high-speed urban transit train inGuangzhou metro line 3 north-extending line and combined system and components life length impact factors, train components was classifiedand analyzed, and overhaul and erection maintenance optimized project based on components reliability for B-type high-speed urban transittrain was put out, which had been implemented successfully.关键词：urban transit train;erection maintenance;overhaul maintenance;B-type train;Guangzhou metro line 3;high-speed urbantransit
- 995
- |
- 4
- |
- 0
发布时间：2021-12-13 - 摘要：Taking CX1015/08 LB electromagnetic contactor utilized in CRH3 EMUs as study object, a new method for judging contactoroperating mechanism failure by checking and comparing the coil current curves was proposed, which could quantify the failure status byanalyzing coil current waveform. Probability of the method was confirmed by test results, a test system design scheme was provided for realtimemonitoring the working status of the electromagnetic contactor.关键词：electromagnetic contactor;coil current curve;failure judgment;waveform analysis
- 485
- |
- 3
- |
- 0
发布时间：2021-12-13 - 摘要：Track signal interference problem during the approval test of SDA1 diesel-AC locomotive was analyzed and studied, and withadopting measures of simulation, control optimization, grounding optimization and test verification, track signal interference problem wassolved.关键词：SDA1 locomotive;signal interference;switch frequency of IGBT;grounding optimization;harmonics current
- 459
- |
- 1
- |
- 0
发布时间：2021-12-13 - 摘要：Aimed at the cooling fan failures of CRH3 EMUs, combined the train vibration condition, conducted modal analysis andstrength analysis of the cooling fan were carried out based on the finite element software. Previous structure weak area was found accordingto the modals and stress distribution of the structure, which was in accordance with the actual failures. After reasonable improvement, thestructural strength of the fan support frame was increased, and at the same time, the natural frequency avoided the car-body resonance frequency.Finally, cracks on bolt hole were tested by ultrasonic, the testing results were good and able to distinguish the sizes and locations of the cracks.关键词：CRH3 EMUs;cooling fan;U-bolt;strength analysis;fatigue failure;ultrasonic testing
- 857
- |
- 2
- |
- 0
发布时间：2021-12-13
- Technical support is provided by Beijing Founder electronics co., LTD 湘ICP备20010475号-1
京公网安备11010802024621 - It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
- Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.
0