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1109results about "Railway vehicle testing" patented technology

Vehicle component real object collision test method and tester

ActiveCN101430251ADetermination of impact forceDetermination of transient accelerationRailway vehicle testingShock testingComplete dataSpeed test
The invention discloses a test method for real object crash of vehicle components and a test device thereof. The test method comprises the following steps: the vehicle components are fixed on a carrying trolley which can move on a track, the speed of the trolley is increased to a test value by traction with a drive system before preparing for crash an impact wall; when the carrying trolley moves to a set position before the impact wall, a trigger device is started to detach the drive system from the carrying trolley, a test component and the carrying trolley are caused to crash the impact wall without drive power; a vehicle-borne acceleration test system is arranged on the carrying trolley so as to complete data acquisition in real time; and the trigger device triggers a speed test system, an impact force test system and a high-speed camera system at the same time. The test method of the real object crash of the vehicle components and the test device can help measure objective data in real time such as the impact force, a transient acceleration, component deformation and speed output at the moment of crash, and further can record deformation sequence images of the components during the whole crash course so as to get scientific and exact analysis results.
Owner:CENT SOUTH UNIV

Locomotive fault diagnosis method and system

InactiveCN102042909APerfect fault diagnosis functionRailway vehicle testingDiagnosis methodsComputer science
The invention discloses a locomotive fault diagnosis method and system. The method comprises the following steps: obtaining monitored data acquired when a sampling device monitors locomotive equipment; comparing the monitored data with an equipment variable state or a data threshold in the fault information of the locomotive equipment in a database; if the variable state of the monitored data is abnormal or a sampling value exceeds a fault data threshold, calling fault prompting information of the fault information of the locomotive equipment from the database and displaying the fault prompting information; storing the fault information and monitored data of the locomotive equipment in storage equipment of a locomotive control unit; and carrying out fault handling on the locomotive equipment according to the fault prompting information of the locomotive equipment. Therefore, by utilizing the locomotive fault diagnosis method and system provided by the invention, all equipment of the whole locomotive can be monitored, the fault handling is carried out on the locomotive equipment with faults, and the fault information is stored, therefore, a set of complete locomotive fault diagnosis method and system is established, so that the function for locomotive fault diagnosis is more perfected.
Owner:DATONG ELECTRIC LOCOMOTIVE OF NCR

Automatic dynamic testing method for waking up of full-automatic driving train

ActiveCN105404272ARealize automatic dynamic test functionProgramme controlElectric testing/monitoringTraction systemEngineering
The invention relates to an automatic dynamic testing method for waking up of a full-automatic driving train. The method comprises: S1, a driving end is selected according to a preset sequence; S2, a VOBC makes an application to a ground area controller ZC to carry out dynamic testing; S3, after authorization, the VOBC outputs a forward leap instruction to an AOM; the AOM transmits the forward leap instruction to a current train; and the train executes dynamic testing equipment and a leap instruction feedback command is sent to the VOBC by a TCMS; S4, the VOBC outputs traction information with a preset time length and a preset dimension to the train; and after the speed of the train reaches the zero speed, the VOBC outputs a leap completion mark; S5, the VOBC outputs a backward leap command; and S6, the forward leap result and the backward leap result are normal, dynamic testing of the driving end is done successfully and changing to a driving end at the other side is carried out and the steps from S2 to S6 are repeated. According to the invention, a problem of energy wasting or equipment wearing due to manual operation negligence can be solved, thereby realizing reliable working of a traction system and a brake system of a to-be-detected train.
Owner:TRAFFIC CONTROL TECH CO LTD

Parameter determining test bed for gantry framework type rail vehicle bogie

The invention relates to a parameter determining test bed for a gantry framework type rail vehicle bogie. The test bed mainly consists of a counter-force type gantry mechanical framework, a six-degree-of-freedom loading mechanism assembly, a bogie transfer bridge device and a bogie positioning and clamping mechanism assembly, wherein the counter-force type gantry mechanical framework provides counter-force support to a test bed loading mechanism and a positioning and clamping mechanism; the six-degree-of-freedom loading mechanism assembly is used for the vertical, lateral and longitudinal loading of the tested bogie; the bogie transfer bridge device is used for smoothly and flexibly transferring the tested bogie to a test bed loading platform; and the bogie positioning and clamping mechanism assembly is used for the vertical, longitudinal and lateral positioning and fixing of a second tested bogie frame. According to the test bed, the tests of parameters, such as the vertical, longitudinal and lateral rigidity of the first bogie and the second bogie, and the bogie torsion rigidity, can be realized, the rigidity coefficient and the flexibility coefficient of each part of the bogie can be automatically calculated by software, and the automation and the efficiency when the bogie parameter is measured are improved.
Owner:JILIN UNIV +1

Method for detecting fault of train suspension system on basis of robust observer

The invention relates to a method for detecting a fault of a train suspension system on the basis of a robust observer. The method comprises the following steps of: a, carrying out modeling on the train suspension system and designing the corresponding fault detection robust observer; b, utilizing an acceleration sensor and a gyroscope to respectively acquire acceleration signals and angular speed signals of a vehicle body and front and rear bogies when a train operates; c, carrying out treatment of anti-aliasing filtering, high-pass filtering, quadratic integration and the like on the acceleration signals and only carrying out anti-aliasing filtering and high-pass filtering on the angular speed signals to obtain a system output; d, utilizing the fault detection robust observer to carry out processing on the system output to obtain a residual output; e, according to a residual sequence, applying a MCUSUM (Multivariable Cumulative Sum) method to calculate a fault detection index; and f, by a fault diagnosis expert system, generating a fault alarm threshold value in real time and judging whether to give an alarm. According to the detection method, when the suspension system has a small fault, the fault can be detected in real time, the alarm is given and the possibility of false alarm and failure in report of a fault detection system can also be reduced.
Owner:BEIJING JIAOTONG UNIV

Method and device for detecting snaking motion instability of high speed train bogie

InactiveCN102706569AAccurate monitoring of snaking motion stabilityNot affectedRailway vehicle testingBogieInstability
The invention relates to a device for detecting snaking motion instability of a high speed train bogie, which is used for monitoring on-line whether snaking motion instability of the bogie appears during the travel of a high speed train. The device provided by the invention comprises a main controller system and a sub-detection system. The main controller system mainly comprises a man-machine interaction module, a GPS (global position system) module, a data analysis record module and a field bus control module. The sub-detection system mainly comprises a sensor module, a data acquisition module, a data analysis module, a field bus control module and a data storage module. A main controller and the sub-detection system are subjected to data communication through a field bus. The sub-detection system monitors the transverse vibration state of the bogie in real time to judge whether the snaking motion instability appears and transmits instability information to the main controller through a field bus; and the main controller completes analysis of the instability information, combines with the GPS module and a clock module to correctly provide time and space synchronizing information at the moment of the occurrence of instability, then gives out a warning signal and stores the fault information.
Owner:SOUTHWEST JIAOTONG UNIV

System for dynamically detecting stiffness parameters of closed-loop diagonal-bracing type vehicle bogies

InactiveCN101561339ASolve problems that cannot meet design performance requirementsShorten the development cycleRailway vehicle testingElasticity measurementBogieControl system
The invention relates to equipment for dynamically detecting parameters of railway vehicles, in particular to a system for dynamically detecting stiffness parameters of closed-loop diagonal-bracing type vehicle bogies. The system consists of a mechanical system, a testing system and a control system, wherein the mechanical system comprises a body vertical thrust block assembly (II), a dynamic detection table (III) for the stiffness parameters of the closed-loop diagonal-bracing type vehicle bogies, and a hoisting-type upper beam pillar (V); the dynamic detection table (III) for the stiffness parameters of the closed-loop diagonal-bracing type vehicle bogies mainly comprises a closed-loop diagonal-bracing type vertical loading gantry (A), a plane loading platform (B), an adjustable-gauge bridge approach device (C), a bogie longitudinal anti-thrust assembly (D) and a simulation corbel (F); the testing system comprises a displacement detection system (G) and a six-dimensional force sensor (c); and the control system mainly comprises a hydraulic control system, an electrical control system and a computer system. The system can perform dynamic test on the stiffness parameters of the bogies in an entire-vehicle state and an independent state.
Owner:JILIN UNIV

Reliability test platform for frame and traction transmission system of bogie of bullet train

The invention discloses a reliability test platform for a frame and a traction transmission system of a bogie of a bullet train. The platform comprises a mechanical assembly part, a test platform base and a hydraulic pump station, wherein the test platform base consists of a concrete base of a rectangular pit, and a No.1 counterforce seat base platform, a No.2 counterforce seat base platform, a large-range adjustable platform, a base pit platform, a driving device base platform and a No.3 counterforce seat base platform which are poured in the concrete base and are positioned in the same horizontal plane; the mechanism assembly part comprises loading devices, an excitation system assembly and a semi-vehicle quality simulation device; the loading devices are fixed on the driving device base platform and the large-range adjustable platform; the excitation system assembly is provided with four vertical actuators and two horizontal excitation assemblies; the bottom ends of the four vertical actuators are fixedly connected with the base pit platform; one end of one horizontal excitation assembly and one end of the other horizontal excitation assembly are fixedly connected with the large-range adjustable platform and the No.3 counterforce seat base platform; and the bottom end of the semi-vehicle quality simulation device is fixed on the test platform base.
Owner:JILIN UNIV

Train running fault diagnosis device based on multi-source information fusion, and method

The invention discloses a train running fault diagnosis device based on multi-source information fusion, and a method. The train running fault diagnosis device based on multi-source information fusion comprises a trackside fault early warning apparatus and a vehicle on-board fault diagnosis apparatus. The trackside fault early warning apparatus comprises a trackside vibration sensor disposed at one side of the track, and a temperature sensor. The vehicle on-board fault diagnosis apparatus comprises an axle box vibration sensor and a framework vibration sensor. The diagnosis comprises the steps of firstly adopting the singular value decomposition and de-noising technology to conduct noise-reducing process on various signals; secondly adopting HHT to extract fault characteristic constant from various vibration signals; thirdly adopting SVM and a threshold determining method to conduct train running local fault diagnosis; finally adopting improved D-S evidence theory to conduct decision fusion on the local fault diagnosis result, and realizing accurate diagnosis of running fault. The train running fault diagnosis device based on multi-source information fusion, and a method are advantageous in that the cost is low, precision is high, and device is simple; the problem of a single sensor that diagnosis may be not accurate can be resolved; the accurate diagnosis of the train running fault can be completed.
Owner:GUANGZHOU METRO GRP CO LTD

System and method for carrying out on-line monitoring on railway wheel-rail contact relationship on basis of structured light

InactiveCN102607439AAccurate access to contact geometry parametersHigh precisionUsing optical meansRailway vehicle testingEngineeringContour line
The invention discloses a system and a method for carrying out on-line monitoring on a railway wheel-rail contact relationship on the basis of structured light. The system comprises a left detector, a right detector and a processing system. Both left and right detectors respectively comprise two linear lasers and one industrial camera. Linear laser emitted by one linear lasers is irradiated onto the surfaces of steel rails and steel rail section contour lines are formed on the surfaces of the steel rails; linear laser emitted by the other linear lasers is irradiated onto the lateral surfaces of wheels and wheel section contour lines are formed on the surfaces of the wheels; and an image of a steel rail and wheel monitoring region comprising the contour lines are directly acquired by the industrial cameras, the image is transmitted to the processing system behind the industrial cameras to be processed, the image is processed, identified, judged, stored and output, and finally, required contact geometrical parameters are obtained. According to the invention, spatial positions of the steel rails and the wheels are synchronously acquired by adopting a structural light method so as to accurately acquire the wheel-rail contact geometrical parameters, thereby acquiring the actual condition of the wheel-rail contact relationship.
Owner:SHANGHAI JIAO TONG UNIV
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