CN102867098A - Component-oriented high-speed train system dynamics computer modeling method - Google Patents
Component-oriented high-speed train system dynamics computer modeling method Download PDFInfo
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Abstract
The invention relates to a component-oriented high-speed train system dynamics computer modeling method. The component-oriented high-speed train system dynamics computer modeling can meet various requirements of working condition calculation of high-speed train coupling system dynamics. The component-oriented high-speed train system dynamics computer modeling method provides a model foundation for coupling calculation among the fields of high-speed train - lines - bow net - pneumatic - dragging power supply and the like and can generate various combined coupling calculation models among different subsystems automatically so as to meet the various requirements of the working condition calculation of the high-speed train coupling system dynamics.
Description
Technical field
The present invention relates to technical field of simulation control.
Background technology
For solving formed advanced dynamic problem between bullet train and the peripheral running environment, must adopt bullet train coupled system dynamics to analyze, and not have at present ripe bullet train coupled system dynamics business software.In current bullet train coupled system dynamics simulation research, still lack suitable computer simulation model.
Summary of the invention
In view of the deficiencies in the prior art, the objective of the invention is to study provides a kind of bullet train of facing assembly system dynamics microcomputer modelling method, makes it to overcome the above shortcoming of prior art.
The objective of the invention is to realize by following means.
A kind of bullet train system dynamics microcomputer modelling method of facing assembly, the bullet train system dynamics microcomputer modelling of facing assembly, to adapt to the dynamic (dynamical) various design condition demands of bullet train coupled system, its main flow process is as follows:
(1) obtains the performance parameter of geometric shape, size, quality, inertia, sprung parts performance parameter, pantograph structural parameters and the service part thereof of bullet train; Obtain bullet train service condition, meteorological condition; Obtain high-speed railway circuit transverse and longitudinal section structure shape and size, bridge tunnel parameter; Obtain high-speed railway electric power system layout, power-supply unit and parameter thereof;
(2) according to (1) the data obtained, carry out respectively first high speed train dynamics modeling, high-speed railway circuit Dynamic Modeling, bullet train bow net Dynamic Modeling, the modeling of high-speed railway tractive power supply system, Aerodynamics of High-speed Trains modeling, adopt again component technology, each subsystem model is encapsulated, form respectively high speed train dynamics model component, high-speed railway circuit kinetic model assembly, bullet train bow net kinetic model assembly, high-speed railway tractive power supply system model component, Aerodynamics of High-speed Trains model component;
(3) according to the wheel track coupling mechanism between bullet train and the peripheral running environment, bow net coupling mechanism, the solid coupling mechanism of stream and mechanical-electric coupling mechanism, set up the coupled relation model between bullet train and the peripheral running environment;
(4) in conjunction with bullet train system dynamics Coupling Research application demand, utilize the self-adaptation model for coupling method for organizing of component-based, obtain to satisfy various application level demand bullet train system dynamics computation models;
(5) model output and application output to above-mentioned bullet train system dynamics Coupling Simulation Model on the dedicated emulated equipment of bullet train system dynamics.Target requirement according to research, can carry out respectively the unity couping simulation study of bullet train system dynamics and partial coupling simulation study, finally for the runnability assessment of bullet train, optimal design, with the coupling design and optimization of line system, provide support with the coupling design and optimization of electric power system etc.
The present invention compared with prior art has the following advantages and effect:
(1) the present invention can create bullet train coupled system dynamic calculating model, and prior art is not yet found implementation method
Existing research is mainly for research or the local Coupling Research in single field, such as train dynamics, bow net dynamics, aerodynamics, car-line Coupled Dynamics, vehicle-Air Coupling dynamics etc., reduction even ignored the impact of part association area, or unidirectionally considered the impact of other field on research object, this is that people to research object and emulation boundary is for cutting off, it can only carry out the specific aim research of bullet train components of system as directed characteristic, can not fully reflect the intrinsic propesties of research object.The bullet train system dynamics computation model that utilizes the present invention to create has been contained influencing each other of the surrounding enviroment such as bullet train and track circuit, contact net, air-flow, can reflect truer, all sidedly the riding quality of bullet train under complicated surrounding enviroment coupling.
(2) the present invention's self-adaptation tissue part coupling model neatly utilizes unified model can satisfy the dynamic (dynamical) various typical cases of bullet train coupled system and uses the operating mode demands
Prior art is only considered the coupling between two sub-systems, and its research object and Research Requirements are specific, so model also is clear and definite.And bullet train coupled system dynamics research object has comprised 5 objects, according to the difference of goal in research, need to carry out the research of unity couping and partial coupling, and Research Requirements has multifarious feature.Model of the present invention has good adaptability, can effectively satisfy the typical condition modeling demand of the dynamic (dynamical) various applications of bullet train coupled system.
Adopt the inventive method, realized a kind of bullet train coupled system dynamics calculation machine modeling of facing assembly, calculate the basis that supplies a model for realizing the coupling between bullet train-circuit-bow net-pneumatic-fields such as traction power supply.Simultaneously, create because this coupling system model is the facing assembly technology, can automatically generate the model for coupling of various combinations between different sub-systems, so the present invention can adapt to the demand of the dynamic (dynamical) various design conditions of bullet train coupled system.
Description of drawings
Each subsystem components model description figure of Fig. 1 bullet train system dynamics
Each subsystem coupled relation model description figure of Fig. 2 bullet train system dynamics
The bullet train coupled system dynamics calculation machine illustraton of model of Fig. 3 facing assembly
The bullet train parton system, coupled computer model figure of Fig. 4 facing assembly, Fig. 4 (a) is train-aerodynamic force coupling model, Fig. 4 (b) is train-circuit coupling model.
Embodiment
Below, by reference to the accompanying drawings, content of the present invention is described in further detail.
The key content of the bullet train system dynamics microcomputer modelling method of facing assembly of the present invention comprises the structure of each subsystem model assembly of bullet train system dynamics, the structure of each subsystem coupled relation model of bullet train system dynamics, the self-adaptation model for coupling method for organizing of component-based, and the detailed implementation procedure of its key content is described below.
1, the structure of each subsystem model assembly of bullet train system dynamics
When making up facing assembly bullet train coupled system Dynamics Coupling computation model, first each subsystem emulation mode and realistic model are encapsulated, be mapped as a component model.Each assembly is relatively independent, only carries out exchanges data by input, output interface set with the outside, as shown in Figure 1.The input set of each subsystem components model of bullet train system dynamics comprises device parameter, structure and the Dynamic Coupling boundary parameter etc. of each subsystem, wherein the Dynamic Coupling boundary parameter is by finding the solution the coupled relation model generation, with coupling Simulation process real-time update; The input set of each subsystem of bullet train system dynamics forms the output collection of each subsystem of bullet train system dynamics after its subsystem components object is found the solution, carry out the after-treatment applications such as system performance assessment and optimization.The output set of each subsystem of bullet train system dynamics comprises the result of calculation in each emulation step of each subsystem of bullet train and relevant coupled relation output data.Each subsystem model assembly of bullet train system dynamics comprises high speed train dynamics component model, high-speed railway circuit dynamics component model, bullet train bow net dynamics component model, bullet train Traction Drive and Power Supply Assembly model, Aerodynamics of High-speed Trains component model.
2, the structure of each subsystem coupled relation model of bullet train system dynamics
The operation of bullet train is subject to the impact of track circuit, contact net, peripheral air-flow etc., formed the kinetics relation of the complexity that intercouples, these the relation mainly comprise and track circuit between the wheel track coupled relation, and the bow net coupled relation between contact net, and the solid coupled relation of the stream between peripheral air-flow.Thought according to the coupling mechanism between each subsystem and modularization enforcement, and in conjunction with the relevant research field (such as vehicle/train dynamics, circuit dynamics, bow net dynamics, train aerodynamics, Traction Drive and power supply etc.) of current bullet train operation, made up each subsystem coupled relation model of bullet train system dynamics as shown in Figure 2.
The concrete meaning of the coupled relation interface variables among Fig. 2 between each subsystem (abbreviation coupling variable) is:
(1) train-circuit coupled subsystem
※ steel rail displacement, speed
The displacement of rail and speed are that line subsystem is to the coupling variable of train subsystem output, be used for calculating wheel rail force, comprise steel rail displacement and the speed at all Wheel/Rail Contact Point places in the operational process, be specially left/right side steel rail displacement (horizontal, vertical, corner) and left/right side rail speed (horizontal, vertical, corner).
※ wheel rail force, contact point
Wheel rail force, contact point are that the train subsystem is to the coupling variable of line subsystem output.Wheel rail force and contact point all are to carry out wheel track by the displacement of the right attitude of wheel for inputting and displacement, rail and speed to calculate, and upwards export to Vehicular system, export to the track circuit system downwards.Wheel rail force and the application point of output comprise the corresponding left/right side of each wheel rail vertical force, vertical position, transverse force and lateral attitude.
(2) train-bow net coupled subsystem
※ speed, acceleration, displacement
Speed, acceleration, displacement are that the train subsystem is to the coupling variable of bow net subsystem output.Comprise each pantograph base position with respect to the displacement (Px, Py, Pz) of rail level coordinate system, the speed (Vx, Vy, Vz) at each pantograph seat place, and the acceleration (ax, ay, az) at each pantograph seat place.
The ※ end reaction
The pantograph end reaction is that the bow net subsystem is to the coupling variable of train subsystem output.The pantograph end reaction is making a concerted effort of the pneumatic lifting power of pantograph, bow net contact pressure counter-force etc.
(3) train-traction power supply coupled subsystem
※ displacement, speed, clinging power, load torque
Displacement, speed, clinging power, load torque are that the train subsystem is to the coupling variable of traction power supply subsystem output.Displacement is decided to be the length travel (kilometer post) of headstock position approximately, and speed refers to the train actual speed that feeds back to traction module, and clinging power refers to train, and each takes turns right total clinging power, and load torque refers to the load torque of each motor of train.
※ traction/damping force, air-making power
Traction/damping force and air-making power are that traction power supply subsystem is to the coupling variable of train subsystem output.Tractive power supply system is by calculating, and with traction/damping force or the traction/braking moment output of every motor, every joint power contains 4 motors, and the tractive force summation of all motors is gross tractive efforts of train.Air-making power refers to the power that produced by the locomotive air clamping device.
(4) train-aerodynamics coupled subsystem
※ displacement, speed, attitude
Speed, displacement, attitude are that the train subsystem is to the coupling variable of aerodynamics subsystem output.Speed refers to that train calculates travelling speed constantly, and displacement refers to that train calculates length travel (kilometer post) constantly, and attitude mainly refers to the attitude of car body.
※ aerodynamic force
Aerodynamic force is that the aerodynamics subsystem is to the coupling variable of train subsystem output.Aerodynamic force is distributed in each outside surface of train and contact with air, comprises aerodynamic drag, aerodynamic lift and pneumatic side force.If car body is considered as rigid body, generally its equivalence is become concentrated force and moment, if but car body is considered as elastic body, and inconsistent to the division of car body grid during owing to the solid coupling of stream and train dynamics calculating, aerodynamic force also needs by conversion, is mapped on the car body grid node in the train dynamics.
(5) bow net-traction power supply coupled subsystem
The length travel of ※ pantograph, vertical deviation, bow net contact pressure
Pantograph length travel, vertical deviation, bow net contact pressure are that the bow net subsystem is to the coupling variable of traction power supply subsystem output.The pantograph length travel represents with kilometer post, vertical deviation be bow with respect to the displacement of rail level coordinate system, bow net contact pressure refers to the pressure between pantograph and the contact net, is mainly used in judging the bow net contact relation.Bow net contact pressure can to pantograph be subjected to the stream situation influential, and then the traction drive that has influence on.
3, the self-adaptation model for coupling method for organizing of component-based
On the basis of each subsystem components model of bullet train system dynamics and coupled relation model, carry out the tissue of bullet train system dynamics computation model.For ensureing the consistance of model in each subsystem, car in each subsystem, line, bow, net, electricity all adopt unified model, wherein train (vehicle) subsystem responsible provides train (vehicle) model (multi-rigid model or Rigid-flexible Coupling Model), line subsystem is responsible for providing the track circuit model, is responsible for providing pantograph and contact net model in the bow net subsystem; The aerodynamics subsystem provides aerodynamic model; Tractive power supply system is responsible for providing power supply and Traction Drive model.Interact by the coupling interface data between each model, mutually drive, form bullet train system dynamics model for coupling.
Modeling technique according to facing assembly, take each subsystem components model of bullet train system dynamics as the basis, coupled relation between each subsystem is mapped as input, the output collection of associated component, adopt the data-interface relationship expression of inter-module, thereby made up the bullet train coupled system dynamic calculating model of whole facing assembly, as shown in Figure 3.Wherein component model A-component model E represents the component model of the subsystems in the bullet train coupled system, component model A is train subsystem components model, component model B is the line subsystem component model, component model C is train aerodynamics subsystem components model, component model D is bow net subsystem components model, component model E is the traction power supply subsystem component model, show interface relationship between the assembly with the arrow line segment table, the flow direction of arrow points representative data, it also is the direction of coupling between system, 1. represent that component model B acts on the interface relationship of component model A, 2. represent that component model A acts on the interface relationship of component model B, 3. represent that component model C acts on the interface relationship of component model A, 4. represent that component model A acts on the interface relationship of component model C, 5. represent that component model D acts on the interface relationship of component model A, 6. represent that component model A acts on the interface relationship of component model D, 7. represent that component model E acts on the interface relationship of component model A, 8. represent that component model A acts on the interface relationship of component model E, represent that 9. component model D acts on the interface relationship of component model E.
This model for coupling is from the angle of system, take train (vehicle) subsystem as core, take line subsystem, wheel track subsystem, power supply and Traction Drive subsystem, aerodynamics subsystem etc. as the effect border, each subsystem establishes one's own system, interact by the border with other subsystems again, form an organic whole.This model for coupling has reflected bullet train and running environment characteristic thereof substantially, on the basis of each subsystem model, owing to considered more more full boundary effects and the effect of intercoupling thereof, can carry out more accurate train (vehicle) Analysis of dynamics performance, simultaneously also can utilize this model to other correlation subsystem, carry out more deep more accurately research such as bow net subsystem, line subsystem etc.
According to the needs of research, the coupling of bullet train system dynamics is calculated and can be divided into unity couping calculating and partial coupling calculating, and different model for coupling need to be provided.Unity couping is calculated and is referred to that all subsystems all participate in coupling and calculate, and partial coupling calculates take train subsystem and line subsystem as core and launches relevant coupling calculating, in different partial coupling account forms, can work to the research of different subsystems, simultaneously because the minimizing of coupling module, computing velocity improves, and the demand minimizing to computational resource has the research practical value.Such as train-circuit-bow net coupling, can be used for the characteristic of research bow net.
During coupling between the study portion subsystem, take train subsystem and line subsystem as core, Research Requirements according to the user, on the basis of bullet train system dynamics unity couping computation model, self-adaptation constructs bullet train system dynamics partial coupling computation model, so that satisfy the computation model demand of various applications at unified bullet train system dynamics computation model.The flow process that makes up the partial coupling computation model is as follows:
1) user sets and participates in the subsystem that coupling is calculated;
2) whether the assembly of each subsystem of modeling traversal bullet train system dynamics is in state of activation;
3) if this subsystem is not activated, traversal unity couping computation model, this subsystem model assembly of automatic rejection, and block the coupled relation relevant with this subsystem;
4) obtain the partial coupling computation model.
Typical partial coupling computation model has vehicle-circuit coupling, vehicle-circuit-bow net coupling, vehicle-circuit-pneumatic coupling, vehicle-circuit-traction power supply coupling, vehicle-circuit-pneumatic-bow net coupling, vehicle-circuit-traction power supply-pneumatic coupling and vehicle-circuit-bow net-traction power supply model for coupling etc., as shown in Figure 4.Wherein component model A is train subsystem components model, component model B is the line subsystem component model, component model C is train aerodynamics subsystem components model, show interface relationship between the assembly with the arrow line segment table, the flow direction of arrow points representative data, it also is the direction of coupling between system, 1. represent that component model B acts on the interface relationship of component model A, 2. represent that component model A acts on the interface relationship of component model B, 3. represent that component model C acts on the interface relationship of component model A, represent that 4. component model A acts on the interface relationship of component model C.
Claims (2)
1. the bullet train system dynamics microcomputer modelling method of a facing assembly, the bullet train system dynamics microcomputer modelling of facing assembly, to adapt to the dynamic (dynamical) various design condition demands of bullet train coupled system, its main flow process is as follows:
(1) obtains the performance parameter of geometric shape, size, quality, inertia, sprung parts performance parameter, pantograph structural parameters and the service part thereof of bullet train; Obtain bullet train service condition, meteorological condition; Obtain high-speed railway circuit transverse and longitudinal section structure shape and size, bridge tunnel parameter; Obtain high-speed railway electric power system layout, power-supply unit and parameter thereof;
(2) according to (1) the data obtained, carry out respectively first high speed train dynamics modeling, high-speed railway circuit Dynamic Modeling, bullet train bow net Dynamic Modeling, the modeling of high-speed railway tractive power supply system, Aerodynamics of High-speed Trains modeling, adopt again component technology, each subsystem model is encapsulated, form respectively high speed train dynamics model component, high-speed railway circuit kinetic model assembly, bullet train bow net kinetic model assembly, high-speed railway tractive power supply system model component, Aerodynamics of High-speed Trains model component;
(3) according to the wheel track coupling mechanism between bullet train and the peripheral running environment, bow net coupling mechanism, the solid coupling mechanism of stream and mechanical-electric coupling mechanism, set up the coupled relation model between bullet train and the peripheral running environment;
(4) in conjunction with bullet train system dynamics Coupling Research application demand, utilize the self-adaptation model for coupling method for organizing of component-based, obtain to satisfy various application level demand bullet train system dynamics computation models;
(5) model output and application output to above-mentioned bullet train system dynamics Coupling Simulation Model on the dedicated emulated equipment of bullet train system dynamics.
2. described modeling method according to claim 1, it is characterized in that, described bullet train system dynamics computation model comprises bullet train system dynamics unity couping computation model and bullet train system dynamics partial coupling computation model, wherein the unity couping computation model refers to comprise the model that bullet train and the whole subsystems of peripheral running environment are coupled and calculate, and the partial coupling computation model refers to the be coupled model of calculating of bullet train and the peripheral running environment subsystem of part.
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| CN109635369A (en) * | 2018-11-23 | 2019-04-16 | 中车青岛四方机车车辆股份有限公司 | A kind of magnetic floats the emulation mode and device of electrical power trans mission/distribution system |
| CN110795877A (en) * | 2019-10-23 | 2020-02-14 | 北京航空航天大学 | Fluid-solid coupling-based pantograph actuating motor torque compensation amount calculation method |
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