CN102854024B - A kind of stepless adjustable inertia simulation control device simulating locomotive operating condition - Google Patents
A kind of stepless adjustable inertia simulation control device simulating locomotive operating condition Download PDFInfo
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- CN102854024B CN102854024B CN201210335784.4A CN201210335784A CN102854024B CN 102854024 B CN102854024 B CN 102854024B CN 201210335784 A CN201210335784 A CN 201210335784A CN 102854024 B CN102854024 B CN 102854024B
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Abstract
The invention discloses a kind of stepless adjustable inertia simulation control device simulating locomotive operating condition, comprise testing table, locomotive, contact electrical network; Described testing table one end is provided with the track of locomotive operation, and the other end installs variable-frequency motor and flywheel successively, and when locomotive starts, flywheel is used for loading to locomotive; And testing table upper end erection contact electrical network, operate in during described locomotive test on the track of testing table, one end and contact electrical network contact; Also be provided with parameter input device, database, frequency converter CPU, in database, deposit the acceleration time that different inertia is corresponding, the program according to control of given acceleration time Driving Torque is installed in frequency converter CPU.According to tractive load and the final speed of the band simulation of input, the acceleration time can be selected automatically from database, and time parameter is passed to frequency converter CPU, frequency converter CPU controls Driving Torque according to the given acceleration time, control the angular acceleration of variable-frequency motor, change load inertia J, simulate varying duty with this.
Description
Technical field
The present invention relates to a kind of adjustable inertia control device, particularly relate to a kind of stepless adjustable inertia simulation control device simulating locomotive operating condition.
Background technology
At present, when locomotive is tested on rolling rig, locomotive is when just starting to start, usually all load is not had, namely locomotive only just can load to locomotive after variable-frequency motor rotates a period of time and has certain rotating speed, therefore, can not simulation locomotive operation really time operating mode, locomotive test does not have very large reliability yet.
Investigated a kind of flywheel gear recently, this flywheel is installed on testing table, when locomotive rotates at the beginning, can load to locomotive, the serious startup situation simulating locomotive being.The part but flywheel gear also comes with some shortcomings, the moment of inertia due to flywheel gear is changeless value, so be also changeless to the load added by locomotive, therefore can only simulate dead load, can not simulate varying duty.But during locomotive startup optimization, added load is not changeless, so need a kind of device that can change locomotive load, namely load inertia can change, realize the stepless adjustable of load inertia, carry out to simulate more really situation when locomotive starts with this.
Summary of the invention
The object of the present invention is to provide a kind of stepless adjustable inertia simulation control device simulating locomotive operating condition, when locomotive starts, adopt this device to change load variation, realize the stepless adjustable of load inertia.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
Simulate a stepless adjustable inertia simulation control device for locomotive operating condition, comprise testing table, locomotive, contact electrical network, on testing table, one end is provided with the track of locomotive operation, rail flanges is provided with testing table rail wheel, the other end is disposed with universal shaft, torque sensor, synchronous step-up gear, variable-frequency motor and flywheel, the output terminal of described variable-frequency motor is connected with the input end of flywheel, and at testing table upper end erection contact electrical network, for providing electric energy, described intra-locomotive is provided with traction electric machine and train wheel, operate in during test on the track of testing table, one end with contact electrical network contact, one end contacts with the testing table rail wheel on testing table, it is characterized by, testing table is also provided with parameter input device, database, frequency converter CPU, parameter input device is used for input parameter, the acceleration time that different inertia is corresponding is deposited in database, program according to control of given acceleration time Driving Torque is installed in frequency converter CPU, according to tractive load and the final speed of the band simulation inputted from parameter devices, the acceleration time can be selected automatically from database, and time parameter is passed to frequency converter CPU, frequency converter CPU controls Driving Torque according to the given acceleration time, control the angular acceleration of variable-frequency motor, change load inertia J.
As preferably, the control mode of the program of installing in described frequency converter CPU is according to given acceleration time Linear Control Driving Torque.
As preferably, described contact electrical network is set up in the oblique upper of locomotive operation one end on testing table.
As preferably, the electric energy that described contact electrical network provides is 25kv single-phase alternating current.
Beneficial effect of the present invention is, owing to devising the flywheel gear with suitable moment of inertia after the variable-frequency motor on testing table, the moment of inertia of flywheel is become by train rectilinear motion inertia equivalence on the line, when locomotive starts to start, flywheel gear can load to locomotive, instead of must wait until that traction electric machine rotates rear and just loads to locomotive after having certain rotating speed, simulate the real work situation that locomotive band carries startup really.Also be provided with database, frequency converter CPU, the acceleration time that different inertia is corresponding is deposited in database, program according to control of given acceleration time Driving Torque is installed in frequency converter CPU, according to tractive load and the final speed of the band simulation of input, the acceleration time can be selected automatically from database, and time parameter is passed to frequency converter CPU, frequency converter CPU controls Driving Torque according to the given acceleration time, control the angular acceleration of variable-frequency motor, change load inertia J, so variable load can be loaded to locomotive, realize the stepless adjustable of load inertia.
Accompanying drawing explanation
Fig. 1 is the structural representation of simulation locomotive operating condition provided by the invention;
Fig. 2 is the process flow diagram of the stepless adjustable inertia simulation control device of simulation locomotive operating condition provided by the invention.
In figure:
1, electrical network is contacted, 2, locomotive, 21, train wheel, 3, testing table, 31, testing table raceway wheel, 32, universal shaft, 33, torque sensor, 34, synchronous step-up gear, 35, variable-frequency motor, 36, flywheel, 37, parameter input device, 38, database, 39, frequency converter CPU.
Embodiment
Technical scheme of the present invention is further illustrated by embodiment below in conjunction with accompanying drawing.
As shown in Figure 1, in the present embodiment, whole system comprises contact electrical network 1, locomotive 2, testing table 3,
On testing table 3, one end is provided with the track that locomotive 2 runs, rail flanges is provided with testing table rail wheel 31, the other end is disposed with universal shaft 32, torque sensor 33, synchronous step-up gear 34, variable-frequency motor 35 and flywheel 36, the output terminal of described variable-frequency motor 35 is connected with the input end of flywheel 36, when locomotive 2 starts, flywheel 36 is used for loading dead load to locomotive 2.At testing table 3 upper end erection contact electrical network 1, be used for providing energy to locomotive, described contact electrical network 1 is preferably arranged on testing table 3 oblique upper.Locomotive 2 inside is provided with traction electric machine and train wheel 21, one end with contact electrical network 1 and be connected, the other end is contacted with testing table rail wheel 31 by train wheel 21.Testing table 3 is also provided with parameter input device 37, database 38, frequency converter CPU39, parameter input device 37 is for pre-entering parameter, the parameter inputted is the final terminal velocity of tractive load to be simulated and variable-frequency motor 35, acceleration time corresponding to different inertia is deposited in database 38, program according to control of given acceleration time Driving Torque is installed in frequency converter CPU39, according to tractive load and the final speed of the band simulation of input from parameter devices 37, the acceleration time can be selected automatically from database 38, and time parameter is passed to frequency converter CPU39, frequency converter CPU39 controls Driving Torque according to the given acceleration time, control the angular acceleration of variable-frequency motor 35, change load inertia J, realize the stepless adjustable of load inertia.Wherein be preferably Linear Control according to the mode of time controling Driving Torque,
During work, locomotive 2 obtains electric energy and is converted into mechanical energy by traction electric machine and is delivered on train wheel 21 from contact electrical network 1, train wheel is namely rotatable, the friction force between 31 is taken turns by train wheel 21 and testing table raceway, train wheel 21 motoring ring test platform raceway wheel 31 rotates, and then drive universal shaft 32 successively, torque sensor 33, synchronous step-up gear 34, the rotation of variable-frequency motor 35 and flywheel 36, when locomotive 2 starts, flywheel 36 is fixed load to the locomotive 2 started, meanwhile, stepless adjustable inertia simulation control device also adds variable load for locomotive 2.
As shown in Figure 2, this process flow diagram is stepless adjustable inertia simulation control device is that locomotive 2 adds loaded flow process, for locomotive 2 loadings are variable load, its size can control in the following manner, in advance from tractive load and the final terminal velocity of input tape simulation parameter input device 37, according to tractive load and the final terminal velocity of the band simulation of input, the acceleration time can be selected automatically from database 38, time parameter is passed to frequency converter CPU39, frequency converter CPU39 controls Driving Torque according to the given acceleration time, this controls to be preferably Linear Control, control the angular acceleration of variable-frequency motor 35.Variable-frequency motor 35 accelerates to final rotating speed w from initial zero degree, and its kinetic energy had is: E=1/2*J*W2, P=dE/dt=J*W*a, J=P/ (W*a), wherein E: kinetic energy, J: moment of inertia, W: motor medium speed, P: power, a: angular acceleration.Namely the moment of inertia that can simulate of variable-frequency motor 35 and power of motor, angular velocity, angular acceleration are relevant, as long as control the Driving Torque of variable-frequency motor 35, control it accelerates to whole angular velocity W2 time and pilot angle acceleration a from initial velocity W1, namely be equivalent in changing load inertia, simulate inertia J really, realize the stepless adjustable of load inertia.
As the preferred embodiment of one, the electric energy that described contact electrical network 1 provides is 25kv single-phase alternating current.
When stepless adjustable inertia simulation control device loads to locomotive 2, step is as follows:
The first step, first inputs the final terminal velocity of tractive load to be simulated and electric machine rotation from parameter charger 37;
Second step, the tractive load to be simulated according to the difference of input and the final terminal velocity of electric machine rotation, find out the corresponding acceleration time from database 38;
3rd step, passes to frequency converter CPU39 the acceleration time found from database 38, and frequency converter CPU39 is according to given acceleration time Linear Control Driving Torque;
4th step, variable-frequency motor 35 is passed in the torque that frequency converter CPU39 exports, because the different angular acceleration of torque is also different, so can Driving Torque be controlled by the control time, and then pilot angle acceleration, the different inertia J of angular acceleration is also different, therefore achieves the stepless adjustable of load inertia.
Below know-why of the present invention is described in conjunction with specific embodiments.These describe just in order to explain principle of the present invention, and can not be interpreted as limiting the scope of the invention by any way.Based on explanation herein, those skilled in the art does not need to pay performing creative labour can associate other embodiment of the present invention, and these modes all will fall within protection scope of the present invention.
Claims (3)
1. simulate a stepless adjustable inertia simulation control device for locomotive operating condition, comprise testing table (3), locomotive (2), contact electrical network (1);
The upper one end of described testing table (3) is provided with the track that locomotive (2) runs, rail flanges is provided with testing table rail wheel (31), the other end is disposed with universal shaft (32), torque sensor (33), synchronous step-up gear (34), variable-frequency motor (35) and flywheel (36), the output terminal of described variable-frequency motor (35) is connected with the input end of flywheel (36), and in testing table (3) upper end erection contact electrical network (1), for providing electric energy, described locomotive (2) inside is provided with traction electric machine and train wheel (21), operate on the track of testing table (3) during test, one end with contact electrical network (1) contact, one end contacts with the testing table rail wheel (31) on testing table (3),
It is characterized in that: testing table (3) is also provided with parameter input device (37), database (38), frequency converter CPU (39), parameter input device (37) is for input parameter, acceleration time corresponding to different inertia is deposited in database (38), program according to control of given acceleration time Driving Torque is installed in frequency converter CPU (39), according to tractive load to be simulated and the final speed of input from parameter input device (37), the acceleration time can be selected automatically from database (38), and time parameter is passed to frequency converter CPU (39), frequency converter CPU (39) controls Driving Torque according to the given acceleration time, control the angular acceleration of variable-frequency motor (35), change load inertia J,
The control mode of the program of installing in described frequency converter CPU (39) is according to given acceleration time Linear Control Driving Torque.
2. the stepless adjustable inertia simulation control device of simulation locomotive operating condition according to claim 1, is characterized in that: described contact electrical network (1) is set up in the oblique upper that the upper locomotive (2) of testing table (3) runs one end.
3. the flywheel gear of analog machine car heavy load starting according to claim 2, is characterized in that: the electric energy that described contact electrical network (1) provides is 25kv single-phase alternating current.
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| CN201210335784.4A CN102854024B (en) | 2012-09-11 | 2012-09-11 | A kind of stepless adjustable inertia simulation control device simulating locomotive operating condition |
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| CN105094161A (en) * | 2014-05-12 | 2015-11-25 | 中国北车集团大同电力机车有限责任公司 | Locomotive speed simulation test apparatus and locomotive speed regulation method |
| CN106405418A (en) * | 2016-10-21 | 2017-02-15 | 南京世界村汽车动力有限公司 | Intelligent test platform for electric driving system of new energy vehicle |
| CN113092141B (en) * | 2020-01-08 | 2022-06-07 | 株洲中车时代电气股份有限公司 | Inertia simulation test system and method for whole vehicle rolling test bed of rail transit vehicle |
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| CN101587022A (en) * | 2006-12-31 | 2009-11-25 | 西南交通大学 | Emulation test bench for vehicle operating of rail locomotive based on differentia transmission |
| CN101825520A (en) * | 2009-10-27 | 2010-09-08 | 华中科技大学 | Whole railway traction locomotive tester |
| CN202939514U (en) * | 2012-09-11 | 2013-05-15 | 北京铁道工程机电技术研究所有限公司 | Stepless adjustable inertia simulation control device for simulating operation conditions of locomotive |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101587022A (en) * | 2006-12-31 | 2009-11-25 | 西南交通大学 | Emulation test bench for vehicle operating of rail locomotive based on differentia transmission |
| CN101825520A (en) * | 2009-10-27 | 2010-09-08 | 华中科技大学 | Whole railway traction locomotive tester |
| CN202939514U (en) * | 2012-09-11 | 2013-05-15 | 北京铁道工程机电技术研究所有限公司 | Stepless adjustable inertia simulation control device for simulating operation conditions of locomotive |
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| Title |
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| 张燕宾.问题49 电梯和电动机车采用转矩控制有什么好处.《变频调速460问》.2006, * |
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Address after: 100070 Beijing Fengtai District South Fourth Ring West Road 188 District 5 Building Patentee after: Beijing Railway Engineering Electromechanical Technology Research Institute Limited by Share Ltd Address before: 100070 Beijing Fengtai District South Fourth Ring West Road 188 District 5 Building Patentee before: Beijing Railway Institute of Mechanical and Electrical Engineering Co.,Ltd. |
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