CN103738351A - Train control method for dealing with severe weather - Google Patents
Train control method for dealing with severe weather Download PDFInfo
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- CN103738351A CN103738351A CN201310700029.6A CN201310700029A CN103738351A CN 103738351 A CN103738351 A CN 103738351A CN 201310700029 A CN201310700029 A CN 201310700029A CN 103738351 A CN103738351 A CN 103738351A
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Abstract
The invention discloses a train control method for dealing with severe weather. The method includes the steps that step1, the forward speed of a wheel set is obtained, the difference between the forward speed and reference speed is calculated to obtain a ratio alpha of the difference to the reference speed, and the trackslip conditions of a train are determined by comparing the ratio alpha with a trackslip threshold value w; step 2, corresponding trackslip control is implemented according to the trackslip conditions of the train.
Description
Technical field
The present invention relates to Train Control field, be specifically related to a kind of Train Control method of cope with bad weather.
Background technology
Rail transit train automatic control technology, in train traffic control and train safe, the efficient more and more important effect of bringing into play in service, becomes the important foundation of operation.Along with the extensive development of track traffic, the pressure of new line operation increases severely, more and more higher for the requirement of automatic Pilot.
Train control system is the gordian technique of the automatic operational system of rail transit train, is to implement train automatically to control, and realizes the basis of automation of traffic control and train automation, is directly involved in system run all right and train operation efficiency.
In current track transport development, there is a large amount of ground segment circuits, at rain, snow, under the severe weather conditions such as frost, because the adhesion coefficient between the wheel track of train reduces, wheel rail relation changes, be very easy to cause train to skid in braking procedure, vehicle judges that according to difference between wheel speed measuring motor train starts anti-skidding control while skidding, vehicle reduces braking force automatically to recover to the full extent wheel track adhesion coefficient, this process causes car brakeing rate to decline, do not meet train control system car controlling basic specification, reduced Train Stopping precision and may cause hypervelocity emergency braking, and detect when actual deceleration degree reduces and can strengthen output braking force in system, add the degree that heavy train skids, affect the safety of train operation.After train emergency braking, only can carry out system recovery by restarting equipment mode, when serious, not only cause and interrupt operation, affect to a great extent passenger's trip.
Summary of the invention
Technical matters to be solved by this invention is under severe weather conditions, existing train control system starts after anti-skidding control, vehicle reduces braking force automatically, cause car brakeing rate to decline, described braking ratio does not meet the braking ratio parameter of train control system car controlling, has reduced Train Stopping precision and may cause hypervelocity emergency braking.
For this purpose, the present invention proposes a kind of Train Control method of cope with bad weather, and the method comprises:
S1. obtain the right front line speed of wheel, calculate the difference of described front line speed and reference velocity, obtain the ratio cc of described difference and reference velocity, by more described α and the threshold value w that skids, determine the train situation of skidding;
S2. according to the train situation of skidding, implement to skid accordingly control.
Wherein, before step S1, the method also comprises:
S01. according to object point, object point speed limit and the poorest braking force, by target braking point L
0advance range L, obtains new target braking point L
1;
S02. detect train distance travelled, judge whether current location is target braking point L
1if brake, otherwise do not brake.
Wherein, in step S01, the calculating of described L comprises:
If the speed while starting to brake is V1, the speed while finishing braking is V2, and former braking force is a1, and the braking force after adjustment is a2,
L=(V1*V1-V2*V2)/a2–(V1*V1-V2*V2)/a1。
Wherein, in step S1, described reference velocity is determined by following steps:
The state of judgement train driving, if motoring condition is traction, reference velocity is all wheel the minimum velocity in speed; If motoring condition is braking, reference velocity is all wheel the maximum speed in speed.
Wherein, at the threshold value w that skids described in step S1, comprise w
1and w
2, w wherein
1<w
2; The described train situation of skidding comprises slight slip, seriously skids and spy is seriously skidded.
Wherein, in step S1, judge described α and w
1and w
2size, if α <0, train is non-slip; If 0< α is <w
1, train slight slip; If w
1< α <w
2, train seriously skids; If α is >w
2, train spy is seriously skidded.
Wherein, in step S2, the early warning information that the different situation of skidding is corresponding different, described early warning information comprises slight slip early warning, seriously early warning and the spy early warning of seriously skidding of skidding.
Wherein, in step S2, described in skid to control and comprise operation A, operation B and operation C, wherein, described operation A is for reducing braking force 20%～30%, the corresponding slight slip early warning of operation A; Described operation B, for prompting driver turns pilot steering, reduces train present speed, the early warning of seriously skidding of operation B correspondence; Described operation C is emergency braking, the corresponding spy of the operation C early warning of seriously skidding.
Than prior art, the beneficial effect of method provided by the invention is:
1. by increasing stopping distance, brake in advance, avoid apply the emergency brake, improved the availability of train control system;
2. by train control system, the train situation of skidding is checked and early warning, and reduce target braking force detecting when train skids, reduced the skid level of train;
3. method provided by the invention has improved positioning precision and stopping accuracy that train skids in situation, reduces the probability of train control system hypervelocity, improves the safety of train control system.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 shows a kind of Train Control method flow diagram of cope with bad weather;
Fig. 2 shows the retro-speed curve comparison figure in embodiment.
The specific embodiment
For making object, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the present invention discloses a kind of Train Control method of cope with bad weather, and as shown in Figure 1, the method comprises:
S1. obtain the right front line speed of wheel, calculate the difference of described front line speed and reference velocity, obtain the ratio cc of described difference and reference velocity, by more described α and the threshold value w that skids, determine the train situation of skidding;
S2. according to the train situation of skidding, implement to skid accordingly control.
Wherein, before step S1, the method also comprises:
S01. according to object point, object point speed limit and the poorest braking force, by target braking point L
0advance range L, obtains new target braking point L
1, wherein, the computation process of L is as follows:
If the speed while starting to brake is V1, the speed while finishing braking is V2, and former braking force is a1, and the braking force after adjustment is a2,
L=(V1*V1-V2*V2)/a2–(V1*V1-V2*V2)/a1
The retro-speed curve of the embodiment of the present invention and current retro-speed curve comparison, as shown in Figure 2, can find out, under inclement weather, in current retro-speed curve, in braking point, if train skids, train control system starts after anti-skidding control, vehicle reduces braking force automatically, cause car brakeing rate to decline, described braking ratio does not meet the target braking ratio parameter of train control system car controlling, train speed easily enters the speed range shown in emergency braking curve, and the retro-speed curve that the embodiment of the present invention proposes, guarantee that the speed of train is in controlled range, make train speed not enter the speed range shown in emergency braking curve,
S02. detect train distance travelled, judge whether current location is target braking point L
1if brake, otherwise do not brake.
Wherein, in step S1, described reference velocity is determined by following steps:
The state of judgement train driving, if motoring condition is traction, reference velocity is all wheel the minimum velocity in speed; If motoring condition is braking, reference velocity is all wheel the maximum speed in speed.
Wherein, at the threshold value w that skids described in step S1, comprise w
1and w
2, w wherein
1<w
2; The described train situation of skidding comprises slight slip, seriously skids and spy is seriously skidded.
Wherein, in step S1, judge described α and w
1and w
2size, if α <0, train is non-slip; If 0< α is <w
1, train slight slip; If w
1< α <w
2, train seriously skids; If α is >w
2, train spy is seriously skidded.
Wherein, in step S2, the early warning information that the different situation of skidding is corresponding different, described early warning information comprises slight slip early warning, seriously early warning and the spy early warning of seriously skidding of skidding.
Wherein, in step S2, described in skid to control and comprise operation A, operation B and operation C, wherein, described operation A is for reducing braking force 20%～30%, the corresponding slight slip early warning of operation A; Described operation B, for prompting driver turns pilot steering, reduces train present speed, the early warning of seriously skidding of operation B correspondence; Described operation C is emergency braking, the corresponding spy of the operation C early warning of seriously skidding.
Train positioning principle is for carrying out initial alignment through two continuous responsers at present, train control system each cycle measure and calculation train is distance travelled, cumulative by what adjust the distance on the basis of train initial position, in conjunction with electronic chart, realize the continuous positioning of train, and utilize the responser on circuit to calibrate train position.Under severe weather conditions, the distance travelled error that train control system is measured can increase.The embodiment of the present invention is by applying in advance braking, the situation of reduce target braking ratio, train being skidded is carried out the measures such as early warning processing, reduced the probability that skids of train, reduce the distance travelled error that train control system is measured, thereby improved the positioning precision of train, thereby guaranteed the stopping accuracy of train in the process of skidding.
Although described by reference to the accompanying drawings embodiments of the present invention, but those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, such modification and modification all fall into by within claims limited range.
Claims (8)
1. a Train Control method for cope with bad weather, is characterized in that, the method comprises:
S1. obtain the right front line speed of wheel, calculate the difference of described front line speed and reference velocity, obtain the ratio cc of described difference and reference velocity, by more described α and the threshold value w that skids, determine the train situation of skidding;
S2. according to the train situation of skidding, implement to skid accordingly control.
2. method according to claim 1, is further characterized in that, before step S1, the method also comprises:
S01. according to object point, object point speed limit and the poorest braking force, by target braking point L
0advance range L, obtains new target braking point L
1;
S02. detect train distance travelled, judge whether current location is target braking point L
1if brake, otherwise do not brake.
3. method according to claim 2, is characterized in that, in step S01, the calculating of described L comprises:
If the speed while starting to brake is V1, the speed while finishing braking is V2, and former braking force is a1, and the braking force after adjustment is a2,
L=(V1*V1-V2*V2)/a2–(V1*V1-V2*V2)/a1。
4. method according to claim 1, is characterized in that, in step S1, described reference velocity is determined by following steps:
The state of judgement train driving, if motoring condition is traction, reference velocity is all wheel the minimum velocity in speed; If motoring condition is braking, reference velocity is all wheel the maximum speed in speed.
5. method according to claim 1, is characterized in that, skidding described in step S1, threshold value w comprises w
1and w
2, w wherein
1<w
2; The described train situation of skidding comprises slight slip, seriously skids and spy is seriously skidded.
6. method according to claim 5, is characterized in that, in step S1, judges described α and w
1and w
2size, if α <0, train is non-slip; If 0< α is <w
1, train slight slip; If w
1< α <w
2, train seriously skids; If α is >w
2, train spy is seriously skidded.
7. method according to claim 1 or 5, is further characterized in that, in step S2, and different early warning information corresponding to the situation of skidding, described early warning information comprises slight slip early warning, seriously early warning and the spy early warning of seriously skidding of skidding.
8. method according to claim 7, is further characterized in that, in step S2, described in skid to control and comprise operation A, operation B and operation C, wherein, described operation A is for reducing braking force 20%～30%, the corresponding slight slip early warning of operation A; Described operation B, for prompting driver turns pilot steering, reduces train present speed, the early warning of seriously skidding of operation B correspondence; Described operation C is emergency braking, the corresponding spy of the operation C early warning of seriously skidding.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105416268A (en) * | 2015-12-03 | 2016-03-23 | 南车株洲电力机车有限公司 | Rail vehicle adhesion coefficient testing system |
| CN105501261A (en) * | 2015-11-24 | 2016-04-20 | 北京交控科技股份有限公司 | Full-automatic driving method, apparatus and system upon severe weather |
| CN106649951A (en) * | 2016-09-30 | 2017-05-10 | 中车南京浦镇车辆有限公司 | Axle speed measurement-based train speed calculation method |
| CN107917720A (en) * | 2016-10-08 | 2018-04-17 | 南京梅山冶金发展有限公司 | The method of the condition monitoring of dump car |
| CN107945556A (en) * | 2017-12-07 | 2018-04-20 | 华蓝设计（集团）有限公司 | A kind of dynamic speed limit optimal control method under through street adverse weather |
| CN108216168A (en) * | 2016-12-22 | 2018-06-29 | 比亚迪股份有限公司 | Train skidding or idle running detection method and device |
| CN108602504A (en) * | 2015-12-22 | 2018-09-28 | 法伊韦利传送器意大利有限公司 | The method of the adhesion strength of the wheel of controlled wheel shaft for controlling and restoring rolling stock |
| CN109229160A (en) * | 2018-08-29 | 2019-01-18 | 交控科技股份有限公司 | Cope with boisterous automatic train control method, device and mobile unit |
| CN109625037A (en) * | 2018-12-20 | 2019-04-16 | 交控科技股份有限公司 | Enter the reminding method and device of sleet mode under full-automatic unmanned driving's mode |
| CN109818549A (en) * | 2019-03-06 | 2019-05-28 | 浙江吉利汽车研究院有限公司 | A kind of guard method of motor |
| CN109828450A (en) * | 2019-04-04 | 2019-05-31 | 哈尔滨恒达交通设备技术开发有限公司 | A kind of anti-tug device of electric locomotive and method |
| CN111376880A (en) * | 2018-12-29 | 2020-07-07 | 比亚迪股份有限公司 | Electromechanical brake system for railway vehicle, control method of electromechanical brake system and railway vehicle |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105501261A (en) * | 2015-11-24 | 2016-04-20 | 北京交控科技股份有限公司 | Full-automatic driving method, apparatus and system upon severe weather |
| CN105416268A (en) * | 2015-12-03 | 2016-03-23 | 南车株洲电力机车有限公司 | Rail vehicle adhesion coefficient testing system |
| CN105416268B (en) * | 2015-12-03 | 2018-06-12 | 南车株洲电力机车有限公司 | A kind of rolling stock adhesion coefficient tests system |
| CN108602504A (en) * | 2015-12-22 | 2018-09-28 | 法伊韦利传送器意大利有限公司 | The method of the adhesion strength of the wheel of controlled wheel shaft for controlling and restoring rolling stock |
| CN106649951A (en) * | 2016-09-30 | 2017-05-10 | 中车南京浦镇车辆有限公司 | Axle speed measurement-based train speed calculation method |
| CN106649951B (en) * | 2016-09-30 | 2020-03-31 | 中车南京浦镇车辆有限公司 | Train speed calculation method based on axle speed measurement |
| CN107917720A (en) * | 2016-10-08 | 2018-04-17 | 南京梅山冶金发展有限公司 | The method of the condition monitoring of dump car |
| CN108216168B (en) * | 2016-12-22 | 2019-11-05 | 比亚迪股份有限公司 | Train skidding or idle running detection method and device |
| CN108216168A (en) * | 2016-12-22 | 2018-06-29 | 比亚迪股份有限公司 | Train skidding or idle running detection method and device |
| CN107945556A (en) * | 2017-12-07 | 2018-04-20 | 华蓝设计（集团）有限公司 | A kind of dynamic speed limit optimal control method under through street adverse weather |
| CN109229160A (en) * | 2018-08-29 | 2019-01-18 | 交控科技股份有限公司 | Cope with boisterous automatic train control method, device and mobile unit |
| CN109229160B (en) * | 2018-08-29 | 2020-09-18 | 交控科技股份有限公司 | Automatic control method and device for train coping with severe weather and vehicle-mounted equipment |
| CN109625037A (en) * | 2018-12-20 | 2019-04-16 | 交控科技股份有限公司 | Enter the reminding method and device of sleet mode under full-automatic unmanned driving's mode |
| CN109625037B (en) * | 2018-12-20 | 2020-10-23 | 交控科技股份有限公司 | Prompting method and device for entering rain and snow mode in full-automatic unmanned driving mode |
| CN111376880A (en) * | 2018-12-29 | 2020-07-07 | 比亚迪股份有限公司 | Electromechanical brake system for railway vehicle, control method of electromechanical brake system and railway vehicle |
| CN109818549A (en) * | 2019-03-06 | 2019-05-28 | 浙江吉利汽车研究院有限公司 | A kind of guard method of motor |
| CN109818549B (en) * | 2019-03-06 | 2021-05-25 | 浙江吉利汽车研究院有限公司 | Motor protection method |
| CN109828450A (en) * | 2019-04-04 | 2019-05-31 | 哈尔滨恒达交通设备技术开发有限公司 | A kind of anti-tug device of electric locomotive and method |
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Address after: 100070 Beijing science and Technology Park of Fengtai District Haiying Road No. 6 hospital of Beijing headquarters of the International 2, building 3, inventor / Designer Applicant after: TRAFFIC CONTROL TECHNOLOGY Co.,Ltd. Address before: 100070 Beijing science and Technology Park of Fengtai District Haiying Road No. 6 hospital of Beijing, the headquarters of the International 2 Building No. 3 Applicant before: Beijing Traffic Control Technology Co., Ltd. |
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