1756results about "Railway vehicles" patented technology

The invention relates to the technical field of motor train unit battery pack evaluation, and provides a motor train unit battery health state evaluation and life prediction method and system, and the method comprises the steps: building a database through voltage fluctuation and temperature data in a floating charge state, and analyzing a correlation mechanism between target parameters, such as a battery capacity retention ratio and active lithium stock, and internal chemical substance loss; respectively extracting driving behavior characteristics, temperature parameters and electrochemical impedance spectroscopy by adopting second-level, minute-level and hour-level time granularity, and aligning multi-frequency data by utilizing a dynamic time warping algorithm; constructing a graph structure model taking the electrochemical parameters as nodes and cross-level association as edges, and extracting a battery aging characteristic topological relation through a graph neural network; and finally, establishing a prediction model fused with multi-dimensional features, and realizing accurate prediction of the residual life and the capacity recession inflection point of the battery. And the multi-scale characteristics are combined with an electrochemical mechanism, so that the accuracy of battery health state evaluation under a complex working condition is improved.

A train tracking system includes a train tracking module, a plurality of input sources providing train related information, and one or more interface(s) associated with the train tracking module, wherein the train tracking module is configured via computer executable instructions and through operation of a processor to receive the train related information from the plurality of input sources via the one or more interface(s), determine a position of a train within a train track map, the position of the train corresponding to a track location of the train in a track network, and wherein the train tracking module further comprises a learning algorithm, the train tracking module being configured to, utilizing the learning algorithm, determine an unexpected occupancy of the track location.

A simulation system of a railway system for a Medium-Voltage Direct Current (MVDC) distribution network includes: a computing device which stores a simulation program including a converter station model configured to simulate a converter station included in the MVDC distribution network and a train operation model configured to simulate an operation state of a train that is supplied with power from the converter station and runs; a converter controller which controls a DC / DC converter included in the converter station model; and a Hardware In the Loop Simulation (HILS) device which performs a simulation based on the converter station model, the train operation model, and the converter controller. Herein, the converter station model and the train operation model are executed in software by the HILS device, and the converter controller is connected to the HILS device and driven to control the converter station model.

The invention provides a high-speed magnetic levitation suspension system control method and system based on edge calculation and Transform prediction, and the method comprises the steps: constructing a Transform prediction model with a space-time attention mechanism and an autoregression mechanism based on obtained local low-delay calculation resources and train real-time sensing data, and deploying the Transform prediction model in a vehicle-mounted edge calculation unit; performing short-term high-precision prediction on the gap, the acceleration and the disturbance trend at a plurality of sampling moments in the future through a Transform prediction model to obtain a prediction result; processing actuator current saturation and gap safety threshold hard constraints in a limited prediction domain by using a model prediction controller, and solving an optimization control sequence in real time in combination with a prediction result; and overlapping a control barrier function as a safety filter of the model prediction controller, correcting the optimized control sequence to obtain an optimal control sequence, and controlling the high-speed magnetic suspension system. According to the method, the cloud communication delay and jitter are reduced, and the robustness and security of the system under uncertain disturbance are improved.

Disclosed is an adaptive control method and system for train operating condition identification. The method includes acquiring train operating state data under various traction conditions and calculating traction and braking performance data. An adhesion condition characteristic data set is formed, and train adhesion conditions are divided into Nz grades based on this data set, where Nz is a natural number. The current adhesion condition grade Nd is identified using the number of adhesion condition grades and current operating state data, where Nd≤Nz, establishing a mapping relationship between an adhesion coefficient and maximum deceleration for braking under the identified grade. An optimal train protection curve is generated. By clustering and grading adhesion conditions through a clustering algorithm, the method achieves more accurate adhesion condition analysis. Adaptively generating optimal train protection curves based on adhesion condition grades enhances the reliability and safety of train operations.

A system and method in a building or vehicle for an actuator operation in response to a sensor according to a control logic, the system comprising a router or a gateway communicating with a device associated with the sensor and a device associated with the actuator over in-building or in-vehicle networks, and an external Internet-connected control server associated with the control logic implementing a PID closed linear control loop and communicating with the router over external network for controlling the in-building or in-vehicle phenomenon. The sensor may be a microphone or a camera, and the system may include voice or image processing as part of the control logic. A redundancy is used by using multiple sensors or actuators, or by using multiple data paths over the building or vehicle internal or external communication. The networks may be wired or wireless, and may be BAN, PAN, LAN, WAN, or home networks.

The present disclosure relates to a maglev bogie, in particular to a maglev bogie with a centering function and a guiding method thereof. The maglev bogie comprises a maglev guide frame, crank arm brackets, guide wheels, first onboard magnet groups and cylindrical gears, wherein the crank arm brackets are hinged to the four corners of the top and bottom of the maglev bogie, the guide wheels are rotatably connected to the ends of the crank arm brackets, two first onboard magnet groups are slidably connected to each of the two inner sides of the upper part of the maglev guide frame, some of the cylindrical gears are connected to the top of the maglev guide frame where the upper crank arm brackets are hinged, two of the cylindrical gears are rotatably connected to each of the two sides of the top of the maglev guide frame, and every two adjacent cylindrical gears are meshed with each other. With the arrangement of the crank arm brackets, the guide wheels and the cylindrical gears, when the guide wheels on one side is squeezed by overhead track beam and displaced, the guide wheels on the other side can be synchronously driven to displace, so as to ensure a centered state of the maglev guide frame, the first onboard magnet groups, the overhead track beam and beam-borne magnetic track.

A power conversion device includes a first electronic component group including a plurality of electronic components and a second electronic component group including a plurality of electronic components each having a shorter maintenance cycle than each of the plurality of electronic components included in the first electronic component group. The first electronic component group and the second electronic component group are accommodated in a housing. At least one of the plurality of electronic components included in the second electronic component group is located adjacent to an opening in the housing.

An automatic charging device is particularly suitable for automatically charging a heavy rail tractor, including a box body; a robotic arm, the robotic arm including a fixed arm and a retractable arm, the fixed arm is fitted in the box body, a driving screw assembly is fitted between the fixed arm and the retractable arm, and the retractable arm can be driven by the driving screw assembly to extend and retract relative to the fixed arm; a flexible unit; and a charging part, wherein the charging part is fitted to a retractable end of the retractable arm by means of the flexible unit, the charging part may be driven by the retractable arm to extend from the box body to implement charging, and after the charging is completed, the charging part may retract into the box body.

A system and method in a building or vehicle for an actuator operation in response to a sensor according to a control logic, the system comprising a router or a gateway communicating with a device associated with the sensor and a device associated with the actuator over in-building or in-vehicle networks, and an external Internet-connected control server associated with the control logic implementing a PID closed linear control loop and communicating with the router over external network for controlling the in-building or in-vehicle phenomenon. The sensor may be a microphone or a camera, and the system may include voice or image processing as part of the control logic. A redundancy is used by using multiple sensors or actuators, or by using multiple data paths over the building or vehicle internal or external communication. The networks may be wired or wireless, and may be BAN, PAN, LAN, WAN, or home networks.

A sensor mounting assembly is configured for use with a vessel arrangement including at least four vessels. The assembly includes first and second elongated frame members, first and second rollers, and first and second sensors. The first sensor is attached to the first elongated frame member and is configured to contact the surface of the first vessel upon actuation in a first direction. The second sensor is attached to the second elongated frame member and is configured to contact the surface of the second vessel upon actuation in a second direction that is substantially orthogonal to the first direction. This disclosure also describes a method of mounting at least six sensors for use with a vessel arrangement including at least four vessels, the vessel arrangement disposed in a container in a two-by-two stacked configuration having a central space.

The invention discloses an electromechanical coupling resonance suppression method, a controller and a motor driving system, relates to the technical field of electromechanical control, and solves the problems that the system stability of existing complex electromechanical equipment is influenced and an acceleration part fails due to electromechanical coupling resonance between an electrical system and a mechanical system. The method comprises the following steps: constructing a kinetic model of a mechanical system; establishing a control algorithm model of the control system; determining that mathematical models of control objects in the control system comprise mathematical models of a permanent magnet motor and a converter, and designing a motor controller for the mathematical models; constructing an electromechanical coupling model based on the dynamical model of the mechanical system and the control algorithm model of the control system; carrying out electromechanical system resonance characteristic analysis based on the electromechanical coupling model to determine a resonance point; the method provided by the invention is combined with the ADRC, still has better control performance when the motor parameters change, and has robustness for the change of the PMSM parameters.

The on-board electrical system according to the invention for a rail vehicle comprises at least a first busbar, a second busbar, and a battery busbar, with auxiliary equipment and / or consumers connected to each of the busbars, at least two on-board power converters, at least two on-board power supply batteries connected to each on-board power converter, and a control unit for controlling at least the on-board power converters. Characteristically, all on-board power converters are identical in their electrical design and each comprises at least one input-side first converter with galvanic isolation, a potential-free DC link, an output-side second converter, and a bidirectional battery charger with galvanic isolation.Furthermore, the control device is designed to connect at least one of the on-board power converters to the first busbar and to control its second converter, to convert a DC voltage of the DC intermediate circuit into a first three-phase AC voltage for the first busbar, and to connect at least one second of the on-board power converters to the second busbar and to control its second converter, to convert the DC voltage into a second three-phase AC voltage for the second busbar.

The present application shows a trolley system for providing electrical power to a vehicle, the trolley system comprising:a trolley line that is at least one out of:a flexible structure to be loosely positioned on a ground surface; anda sealed structure with an insulating housing comprising a sealing arrangement for sealing an opening extending along the trolley line, anda current collector assembly mounted on the vehicle for establishing a sliding electrical contact with a conductor of the trolley line.

An electromechanical actuator (200) for a braking system of a vehicle (V), particularly a railway vehicle, is described, characterized in that it includes a first control means (202) arranged to receive from a speed sensor means (204, 204′), associated with a wheel (w) of the vehicle, a speed signal having a value indicative of an angular speed of the wheel (w) of the vehicle.A braking system and a vehicle are also described.

A wheel includes a boss, a rim, and a web. The rim includes a tread and a flange. A center of the rim in the axial direction of the wheel is disposed closer to the flange in the axial direction than a center of the boss in the axial direction is. The web has a plate-thickness center line that has a linear shape when the wheel is viewed in its longitudinal section. When an angle that the plate-thickness center line forms with the axial direction is denoted by a, a distance in the axial direction from a side face of the rim to an outer end of the plate-thickness center line is denoted by Pw, a length of the rim in the axial direction is denoted by Wr, and Pw / Wr is denoted by L, the wheel satisfies the expression L≥0.0223α−1.363. Where, the angle α is 90° or less.

The invention discloses a train driving control method and related equipment, and relates to the technical field of rail transit, the method comprises the steps that multi-source sensing data of a target train in a running state is acquired, and the multi-source sensing data comprises a speed characteristic parameter, a space positioning parameter and an environment disturbance parameter; performing dynamic feature extraction on the multi-source sensing data to obtain time-space correlation feature parameters; inputting the time-space correlation characteristic parameters into a preset data fusion model, and performing dynamic compensation through adaptive weight adjustment to obtain accurate train speed information and accurate position information; and performing driving control on the target train according to the accurate train speed information and the accurate position information. According to the invention, through multi-source information fusion and high-precision speed positioning extraction, the sensing accuracy and active adjustment capability of the train control system can be improved.

The invention relates to a hybrid energy storage control method for an urban rail transit energy router. The method comprises the following steps: S1, carrying out topological structure design and system compatibility configuration on the energy router; s2, impedance modeling and frequency division power distribution of the hybrid energy storage system are carried out; s3, fuzzy controller design and super capacitor SOC dynamic management are carried out; s4, carrying out membership function optimization and fuzzy control parameter setting; s5, multi-mode cooperative control and system operation optimization are carried out; according to the structure of the energy router and the power utilization characteristics of the rail transit system, working modes are divided, the working state of the system is optimized, and the system is kept in a reasonable working state. The method can effectively improve the utilization rate of energy and prolong the service life of the system.

A method and system controller includes determining a power requirement for a vehicle system to complete a planned trip over a route. The method includes determining whether an amount of available power from the vehicle system is sufficient to propel the vehicle system to complete the planned trip by comparing the available power with the power requirement that is determined. The method includes changing one or more operational aspects of the planned trip based on the comparison between the amount of available power and the power requirement that is determined to generate a newly planned modified trip.

The present invention discloses a movable visual inspection device for shield machines, comprising a rail and an inspection platform. The rail is installed on a shield tail, and the inspection platform includes a bottom plate, a shell, a cleaning mechanism, a power storage control system, and a traveling mechanism. Inside the shell is a visual inspection mechanism with a camera box, a camera, and a stabilizer component. The traveling mechanism drives the bottom plate along the rail. The cleaning mechanism, consisting of a glass sheet, a reel driving part, and a cleaning film, keeps the camera lens clear. The reel driving part rotates the cleaning film, which slides against the glass sheet on the camera box. This invention enables multi-faceted and multi-angle visual inspection of shield machine segments, ensures a clear camera lens, facilitates automatic cleaning and inspection position adjustment, and enhances working efficiency and inspection effectiveness.

A method for generating an auxiliary troubleshooting strategy for communication faults of a locomotive power battery system. The method comprises: acquiring a communication fault troubleshooting record of a locomotive power battery system; extracting fault causes at various levels for each type of communication faults, and establishing a fault tree; when there is a specific alarm communication fault, determining the time type and duration of the communication fault, and intercepting a fault subtree of the alarm communication fault; qualitatively analyzing the fault subtree to obtain a minimum cut set; quantitatively analyzing the fault subtree to obtain critical importance degrees of bottom events, and ranking same in a descending order; correcting the ranking of the importance degrees of the bottom events, so as to form a bottom event importance degree ranking table; and successively performing troubleshooting on the basis of the bottom event importance degree ranking table. Auxiliary troubleshooting strategies for communication faults are provided accurately, which improves the efficiency and accuracy of troubleshooting communication faults by maintenance staff, and helps to take corresponding maintenance measures, thus improving the utilization rate of new energy locomotives, and reducing downtime costs.

A system and method in a building or vehicle for an actuator operation in response to a sensor according to a control logic, the system comprising a router or a gateway communicating with a device associated with the sensor and a device associated with the actuator over in-building or in-vehicle networks, and an external Internet-connected control server associated with the control logic implementing a PID closed linear control loop and communicating with the router over external network for controlling the in-building or in-vehicle phenomenon. The sensor may be a microphone or a camera, and the system may include voice or image processing as part of the control logic. A redundancy is used by using multiple sensors or actuators, or by using multiple data paths over the building or vehicle internal or external communication. The networks may be wired or wireless, and may be BAN, PAN, LAN, WAN, or home networks.

An apparatus for controlling driving of a transport vehicle in a goods transport system includes a processing unit providing information on a movement path of the transport vehicle, a motion controller generating a drive signal including front- and rear-wheel torque signals for driving front and rear wheels, respectively, of the transport vehicle, a front-wheel torque controller controlling rotation torque of the front wheel on the basis of the front-wheel torque signal, and a rear-wheel torque controller controlling rotation torque of the rear wheel on the basis of the rear-wheel torque signal. The motion controller includes a position controller generating a positional signal determining a position of the transport vehicle, a speed controller generating a speed signal determining a speed of the transport vehicle, and a torque distributor generating the front- and rear-wheel torque signals.

The following invention relates, in a first aspect, to a pressure vessel for receiving and storing gases, more particularly hydrogen. The pressure vessel comprises a main body of metal together with an outer shell, the outer shell having sensor elements and reinforcing elements, with optional transmitters and / or receivers of information and electric fields present optionally in the outer shell. The present invention also relates to corresponding pressure storage systems having pressure vessels of this type, to devices having fuel cells and pressure vessels according to the invention, and to methods for producing said pressure vessels.

The invention discloses a multi-vehicle cooperative intelligent marshalling speed regulation method for railway transportation of power batteries. The method comprises the following steps: establishing state characteristics of each transportation truck, and constructing a position sensitive damage cost function for evaluating the risk cost of each truck at different marshalling positions according to the state characteristics; in the railway vehicle transportation process, an event-driven time pane dynamic optimization method is adopted, a vehicle marshalling and train speed control curve is dynamically updated according to state parameters collected in real time, and in the optimization process, a variable damping distribution strategy of a coupler and a cooperative vehicle speed curve generation algorithm are adopted, so that the train speed control curve is dynamically updated. Meanwhile, time dispersion is carried out on coupling impact events through an impact time peak shifting strategy; and when the comprehensive risk index of any transport truck exceeds a preset threshold value, an emergency re-marshalling strategy based on the energy absorption remaining amount of the battery packaging unit and the coupler health degree is executed. The method can comprehensively consider the thermal characteristics of the power lithium battery, the dynamic response of the vehicle and the risk evolution.

The invention provides a pantograph ice scraping device and method for real-time deicing and relates to the technical field of rail transit, and the method comprises the steps that the train speed, the gravity of a contact line under icing and the contact force of a current-receiving pantograph are collected in real time; inputting the train speed and the gravity into a preset pantograph-catenary dynamical model to calculate the optimal lifting force of the ice-scraping pantograph; based on the optimal lifting force of the ice scraping pantograph, the height of the ice scraping pantograph is controlled in real time for ice scraping; calculating a difference value between the contact force and a preset contact force, and updating the optimal lifting force of the current-collecting pantograph through the difference value; and the height of the current-receiving pantograph is controlled based on the optimal lifting force of the current-receiving pantograph, and optimal pantograph-catenary matching during ice scraping of the pantograph is achieved. According to the method, the problems that under the conditions that the icing speed of the overhead line system is high and the skylight time is short, the overhead line system cannot be conveniently and efficiently deiced, and good contact between pantograph catenaries cannot be guaranteed in an existing method are solved.

The invention relates to a pantograph (1) for a rail vehicle, the pantograph comprising a structure and an articulated frame (5) mechanically connected to the structure, and a head mechanically connected to the articulated frame, wherein the pantograph is characterised in that it comprises a safety device (36) and an actuator (30) configured to act on the articulated frame via the safety device, and wherein the safety device is configured to selectively: - mechanically couple the actuator to the articulated frame, whereby the articulated frame can be moved, by the actuator, between a raised position in which the head is in contact with a catenary and a lowered position in which the head is brought closer to the structure; and - mechanically uncouple the actuator from the articulated frame, whereby the articulated frame moves into the lowered position, under its own weight, independently of the action of the actuator.

A power bank is provided for charging a load handing device, the power bank including: an auxiliary rechargeable power source; and at least one power transfer device electrically coupled to the auxiliary rechargeable power source; wherein the at least one power transfer device is configured to electrically couple to a load handling device so as to transfer electrical power from the auxiliary rechargeable power source to the load handing device.Buchanan