CN113942399B - Control method for inhibiting locomotive from idling at low speed - Google Patents
Control method for inhibiting locomotive from idling at low speed Download PDFInfo
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- CN113942399B CN113942399B CN202111407914.6A CN202111407914A CN113942399B CN 113942399 B CN113942399 B CN 113942399B CN 202111407914 A CN202111407914 A CN 202111407914A CN 113942399 B CN113942399 B CN 113942399B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/12—Recording operating variables ; Monitoring of operating variables
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C3/00—Electric locomotives or railcars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2200/00—Type of vehicles
- B60L2200/26—Rail vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/423—Torque
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/429—Current
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Abstract
The invention provides a control method for inhibiting locomotive low-speed idle running, which comprises the following steps of S1: for detection of the acceleration control axis, S11: detecting that when the action condition of the IGBT gate electrode of the primary inverter is established, namely that the locomotive converter system is connected with a microcomputer instruction to carry out the traction action of the whole locomotive, judging whether the inverter gate electrode can carry out normal action or not; s12: detecting the current output by the motor, and detecting the range of a motor torque current command value; s13: detecting the idling times of an acceleration control shaft; according to the invention, after the abnormal speed signal of the locomotive is detected, the reference speed and other shaft traction of the locomotive are not influenced by the abnormal speed signal of the fault shaft, the reduction amplitude of the traction of the whole locomotive is greatly reduced, the traction can be normally exerted, the normal operation of the locomotive is ensured, the problem that the locomotive cannot be normally started due to insufficient traction caused by the fact that the shaft is erroneously detected to idle rotation is solved, and the running safety and reliability of the locomotive are effectively improved.
Description
Technical Field
The invention relates to the technical field of locomotives, in particular to a control method for inhibiting low-speed idle running of a locomotive.
Background
With the rapid development of the economy in China, the goods circulation is rapidly increased, the contradiction between the railway traffic capacity and the operation performance is gradually highlighted, wherein the most prominent problem affecting the locomotive operation performance is the idling problem of the locomotive, in the wheel-rail transportation, the adhesive force between the locomotive wheels and the steel rail is the final power for driving the locomotive to operate, and the formation of traction force and braking force and the exertion of traction and braking power are controlled by the adhesion of the wheel rail.
However, according to the differences of track conditions, track sections, track fluctuation, wrinkling, turnout heights, curvatures, weather conditions or other pollution (such as rain, snow, ice, frost, yin, sunny, leaves and insect aggregation) and the like, the adhesion available at the same place of a locomotive can be changed remarkably, when the adhesion force between wheel tracks is smaller than the traction force of a wheel shaft generated by a locomotive wheel pair, the locomotive can idle, the locomotive is caused to run at a low speed due to insufficient traction force, the safe running of the locomotive can be directly influenced, the wheel tracks can be scratched, the damage is extremely great, and the fact that how the locomotive can work on the track surface can make more full use of the adhesion force of the ground wheel tracks effectively inhibits the low-speed idle of the locomotive has become a key place for heavy-load traction and railway speed acceleration to be carried out smoothly.
According to the existing idle control method of the locomotive, the acceleration shaft only uses the speed to calculate the acceleration, the acceleration shaft is not influenced by other shafts, if the 6-shaft locomotive fails, the low-speed idle running of the whole locomotive is equivalent, and due to the lack of the idle control mode, the traction loss of the locomotive is overlarge, the adhesion utilization of the locomotive is influenced, and the locomotive cannot be pulled normally.
Accordingly, there is a need to provide a control method for suppressing low idle running of a locomotive that solves the above-mentioned problems.
Disclosure of Invention
The invention provides a control method for inhibiting low-speed idle running of a locomotive, which solves the problem that the whole locomotive cannot be pulled due to excessive loss of traction force when the locomotive runs out of idle running fault.
In order to solve the technical problems, the control method for inhibiting the low-speed idle running of the locomotive provided by the invention comprises the following steps:
s1: detection of acceleration control axes
S11: detecting that when the action condition of the IGBT gate electrode of the primary inverter is established, namely that the locomotive converter system is connected with a microcomputer instruction to carry out the traction action of the whole locomotive, judging whether the inverter gate electrode can carry out normal action or not;
s12: detecting the current output by the motor, and detecting the range of a motor torque current command value;
s13: detecting the idling times of an acceleration control shaft;
s2: detection of creep control shaft
S21: detecting that when the action condition of the IGBT gate electrode of the primary inverter is established, namely that the locomotive converter system is connected with a microcomputer instruction to carry out the traction action of the whole locomotive, judging whether the inverter gate electrode can carry out normal action or not;
s22: the number of idle rotation times and the number of idle rotation times of the self-shaft are detected in a certain time.
Preferably, in S1, the shaft speed is determined as abnormal speed if the following condition is satisfied:
s11: when the action condition of the IGBT gate electrode of the primary inverter is established, namely, the locomotive converter system is connected with a microcomputer instruction to carry out the traction action of the whole locomotive, and the inverter gate electrode can normally act;
s12: detecting the current output by the motor, wherein the range of a motor torque current command value is less than or equal to 50A;
s13: detecting that the idling times of the acceleration control shaft reach three times;
preferably, in S2, the shaft speed is determined as abnormal if the following condition is satisfied:
s21: when the action condition of the IGBT gate electrode of the primary inverter is established, namely, the locomotive converter system is connected with a microcomputer instruction to carry out the traction action of the whole locomotive, and the inverter gate electrode can normally act;
s22: the acceleration within 10s is detected that the number of idling of the shaft is less than 2 times and the number of idling of the self-shaft is more than or equal to 5 times.
Preferably, when the acceleration shaft of S1 and the creep control shaft of S2 are determined to be abnormal in speed, the speed of the acceleration shaft or the creep control shaft of the other shaft is informed of abnormal speed through communication transmission in the converter system, and the speed of the acceleration shaft or the creep control shaft does not participate in the reference speed determination logic.
Preferably, in the first step, the motor torque current command value is preferably 16A, 24A, 30A, 36A, 45A.
Preferably, in the first step, the number of idle times for the acceleration detection is 2 to 5 times, preferably 3 times.
Preferably, in the second step, the number of idling of the shaft is preferably 1, and the number of idling of the self-shaft is preferably 8, 13, 28, 34 or 56.
Preferably, the detection of the current output by the motor in S12 is performed by a motor current detecting instrument, and the model is AC-1211.
Preferably, the detection of S1 and S2 may be performed simultaneously or sequentially from the completion of the detection of S1 to the detection of S2.
Compared with the related art, the control method for inhibiting the low-speed idle running of the locomotive provided by the invention has the following steps of
The beneficial effects are that:
the invention provides a control method for inhibiting the low-speed idle running of a locomotive, which is characterized in that after the abnormal speed signal of the locomotive is detected, the reference speed and other traction forces of the locomotive are not influenced by the abnormal speed signal of a fault shaft, the descending amplitude of the traction force of the whole locomotive is greatly reduced, the traction force can be normally exerted, the normal operation of the locomotive is ensured, the problem that the locomotive cannot be normally started due to insufficient traction force caused by the fact that the shaft is erroneously detected to be idle is solved, and the safety and reliability of the running of the locomotive are effectively improved.
Drawings
FIG. 1 is a block diagram of a locomotive idle control strategy according to a preferred embodiment of the present invention;
FIG. 2 is an acceleration axis idle test data of a control method for inhibiting locomotive low idle provided by the invention;
FIG. 3 is a graph of creep control shaft idle test data for a control method for inhibiting locomotive low idle provided by the invention;
FIG. 4 is a prior art idle test data of a control method for inhibiting locomotive low idle provided by the present invention;
FIG. 5 is a block diagram of a prior art creep control of a control method for inhibiting locomotive low idle in accordance with the present invention;
FIG. 6 is a block diagram of a prior art acceleration idle detection of a control method for inhibiting locomotive low idle provided by the present invention;
FIG. 7 is a schematic diagram of a prior art locomotive idle strategy shaft position for a control method for inhibiting locomotive low idle provided by the present invention.
Detailed Description
The invention will be further described with reference to the drawings and embodiments.
Referring to fig. 1, fig. 2, and fig. 3 in combination, fig. 1 is a schematic diagram of a locomotive idle control strategy according to a preferred embodiment of a control method for inhibiting low idle running of a locomotive according to the present invention; FIG. 2 is an acceleration axis idle test data of a control method for inhibiting locomotive low idle provided by the invention; FIG. 3 is a graph of creep control shaft idle test data for a control method for inhibiting locomotive low idle provided by the invention. A control method for inhibiting locomotive low-speed idle running comprises the following steps:
s1: detection of acceleration control axes
S11: detecting that when the action condition of the IGBT gate electrode of the primary inverter is established, namely that the locomotive converter system is connected with a microcomputer instruction to carry out the traction action of the whole locomotive, judging whether the inverter gate electrode can carry out normal action or not;
s12: detecting the current output by the motor, and detecting the range of a motor torque current command value;
s13: detecting the idling times of an acceleration control shaft;
s2: detection of creep control shaft
S21: detecting that when the action condition of the IGBT gate electrode of the primary inverter is established, namely that the locomotive converter system is connected with a microcomputer instruction to carry out the traction action of the whole locomotive, judging whether the inverter gate electrode can carry out normal action or not;
s22: detecting the idle times and the idle times of the self-axis of the motor in a certain time;
in S1, the shaft speed is determined as abnormal speed if the following condition is satisfied:
s11: when the action condition of the IGBT gate electrode of the primary inverter is established, namely, the locomotive converter system is connected with a microcomputer instruction to carry out the traction action of the whole locomotive, and the inverter gate electrode can normally act;
s12: detecting the current output by the motor, wherein the range of a motor torque current command value is less than or equal to 50A;
s13: detecting that the idling times of the acceleration control shaft reach three times;
in S2, the shaft speed is determined as abnormal speed if the following condition is satisfied:
s21: when the action condition of the IGBT gate electrode of the primary inverter is established, namely, the locomotive converter system is connected with a microcomputer instruction to carry out the traction action of the whole locomotive, and the inverter gate electrode can normally act;
s22: the acceleration within 10s is detected that the number of idling of the shaft is less than 2 times and the number of idling of the self-shaft is more than or equal to 5 times.
And when the acceleration shaft of the S1 and the creep control shaft of the S2 are judged to be abnormal in speed, the speed of the acceleration shaft or the creep control shaft of other shafts is informed of abnormal speed through communication transmission in the converter system, and the speed of the acceleration shaft or the creep control shaft does not participate in the reference speed judgment logic.
In the first step, the motor torque current command values are preferably 16A, 24A, 30A, 36A, 45A.
In the first step, the number of idling times for acceleration detection is 2 to 5 times, preferably 3 times.
In the second step, the number of idling of the shaft is preferably 1, and the number of idling of the self-shaft is preferably 8, 13, 28, 34 or 56.
The detection of the current output by the motor in the step S12 is performed by a motor current detection instrument, and the model is AC-1211.
The detection of S1 and S2 may be performed simultaneously or sequentially from the completion of the detection of S1 to the detection of S2.
In the detection of S1 and S2, the detection can be performed simultaneously, and the detection time can be shortened.
The single detection can be carried out, and the single detection can be finer and more accurate to detection, so that the accuracy of data is ensured.
Technical proposal of the prior art
The existing anti-idle control method is to calculate parameters such as a speed difference reference, an acceleration reference and the like by detecting the rotation speed and the current of each traction motor of a locomotive, set limit values of the parameters, and judge idle when the limit values are exceeded or fallen below.
The speed difference reference is the difference between the maximum speed of the wheel set and the reference speed of the locomotive, and can intuitively reflect the current creep condition of the locomotive; the acceleration reference is the speed increment of each wheel set in unit time, overcomes the defect that the speed difference cannot detect simultaneous idling of multiple axles, and has higher sensitivity than the speed difference reference.
The locomotive uses 2 control methods shown in table 1 according to the idle degree.
TABLE 1
(1) Creep control
Referring to fig. 5, when the adhesion characteristic (N) is greater than the torque command (T) from the controller, the VVVF inverter may output a torque corresponding to T, but if the adhesion characteristic N is smaller than T, the idle rotation occurs. Here, the adhesion property N depends on the state of the track.
In general, the maximum adhesion is obtained in a small idling state called "creep state", and when N is smaller than T, i.e., idling occurs, the TCU remains in the creep state and outputs torque, maximizing the use of the available adhesion.
The shaft speed is calculated from the motor frequency of each shaft, and is faster than the actual speed during idling, and the creep speed (delta omega) under traction is expressed as follows:
△ω＝ωr-ωa
here, ωr and ωa represent the actual speed of the shaft and the estimated locomotive speed.
As shown in fig. 5, the TCU can control torque according to Δω, and the locomotive can use adhesion to the maximum in various track states.
(2) Acceleration idle detection
Referring to fig. 6, when larger idle and coasting occurs, the axle speed calculated by the motor frequency increases instantaneously, and the locomotive acceleration αr is calculated using the derivative of the axle speed.
The locomotive idle control strategy is:
when the advancing direction is 1: the 1 axis, the 2 axis, the 4 axis and the 5 axis adopt creeping control, and the 3 axis and the 6 axis adopt acceleration idling detection control;
when the advancing direction is 2: the 2 axis, 3 axis, 5 axis and 6 axis adopt creeping control, the 1 axis and 4 axis adopt acceleration idling detection control, as shown in figure 7.
Disadvantages of the prior art:
if the locomotive uses the front end cab to pull, the 3, 6 axes of the locomotive are selected as acceleration axes, 1, 2, 4, 5 are creep control axes; according to the existing idle control method of the locomotive, the acceleration shaft only uses own speed to calculate acceleration and is not influenced by other shafts; the creep control shaft is controlled by referring to the speed of a reference shaft, and the speed of the reference shaft during traction is the lowest speed in 1-6 shafts, so that once the feedback of a speed sensor of 3 shafts or 6 shafts is abnormal, a locomotive microcomputer judges that idle running occurs through logic judgment, a traction force is reduced, and the idle running is restrained by reducing the speed; at this time, the speed of the failed acceleration axis will be directly adopted as the reference speed due to the decrease; the other 4 creep control shafts are also misjudged to idle under the influence of the speed reduction of the reference shaft, and simultaneously the traction force is also controlled, so that the locomotive has five shafts with the condition that the traction force cannot be normally exerted, and the locomotive cannot be normally accelerated.
If the 6-axis locomotive fails, the low-speed idle running of the whole locomotive is equivalent, and the loss of the traction force of the locomotive is overlarge due to the lack of the idle running control mode, so that the adhesion utilization of the locomotive is affected, and the locomotive cannot be pulled normally.
In order to verify the effect of the novel idle running control strategy, software is installed on an acceleration shaft (4 shafts) of the locomotive, and the acceleration shaft is changed into a speed abnormal state through software simulation, and the idle running of the 4 shafts of the locomotive is manually simulated;
as shown in fig. 2, it can be seen from the figure that the 2, 3, 5 and 6 axes are affected by the abnormal speed of the 4 axes before the 4 axes are detected to be faulty, and the traction force is recovered to be normal after the fault is detected and is not affected by the abnormal speed of the 4 axes;
the test data of the creep control shaft are shown in fig. 3, and the test data of the creep control shaft are consistent with the test data of the acceleration shaft, and the test data of the creep control shaft affect the traction output of other shafts before fault detection, so that the other shafts idle, and after the fault detection, the traction of the other shafts is recovered to be normal and is not affected by the fault shaft.
In order to verify the superiority of the control method for inhibiting the low-speed idling of the locomotive, which is provided by the invention, the control method is applied to the adhesion utilization control system of the electric locomotive with the output Uzbezitan 12 shaft, and for comparison, the waveforms of idling protection collected by the acceleration shaft and the creep control shaft are shown in fig. 2 and 3, and the waveforms of the traditional scheme are shown in fig. 4, and under the condition of the same idling degree, only the shaft with abnormal speed in the new scheme performs traction reduction, and the traction of the other shafts is normal.
Compared with the related art, the control method for inhibiting the low-speed idle running of the locomotive provided by the invention has the following steps of
The beneficial effects are that:
according to the invention, after the abnormal speed signal of the locomotive is detected, the reference speed and other shaft traction of the locomotive are not influenced by the abnormal speed signal of the fault shaft, the reduction amplitude of the traction of the whole locomotive is greatly reduced, the traction can be normally exerted, the normal operation of the locomotive is ensured, the problem that the locomotive cannot be normally started due to insufficient traction caused by the fact that the shaft is erroneously detected to idle rotation is solved, and the running safety and reliability of the locomotive are effectively improved.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.
Claims (8)
1. A control method for inhibiting low-speed idle running of a locomotive, comprising the steps of:
s1: detecting an acceleration control shaft;
s11: detecting that when the action condition of the IGBT gate electrode of the primary inverter is established, namely that the locomotive converter system is connected with a microcomputer instruction to carry out the traction action of the whole locomotive, judging whether the inverter gate electrode can carry out normal action or not;
s12: detecting the current output by the motor, and detecting the range of a motor torque current command value;
s13: detecting the idling times of an acceleration control shaft;
s2: detecting a creep control shaft;
s21: detecting that when the action condition of the IGBT gate electrode of the primary inverter is established, namely that the locomotive converter system is connected with a microcomputer instruction to carry out the traction action of the whole locomotive, judging whether the inverter gate electrode can carry out normal action or not;
s22: detecting the idle times and the idle times of the self-axis of the motor in a certain time;
in S1, the shaft speed is determined as abnormal speed if the following condition is satisfied:
s11: when the action condition of the IGBT gate electrode of the primary inverter is established, namely, the locomotive converter system is connected with a microcomputer instruction to carry out the traction action of the whole locomotive, and the inverter gate electrode can normally act;
s12: detecting the current output by the motor, wherein the range of a motor torque current command value is less than or equal to 50A;
s13: detecting that the idling times of the acceleration control shaft reach three times;
in S2, the shaft speed is determined to be abnormal if the following condition is satisfied;
s21: when the action condition of the IGBT gate electrode of the primary inverter is established, namely, the locomotive converter system is connected with a microcomputer instruction to carry out the traction action of the whole locomotive, and the inverter gate electrode can normally act;
s22: the acceleration within 10s is detected that the number of idling of the shaft is less than 2 times and the number of idling of the self-shaft is more than or equal to 5 times.
2. The method according to claim 1, wherein when the acceleration control shaft of S1 and the creep control shaft of S2 are determined to be abnormal in speed, the other shaft is informed of abnormal acceleration control shaft or creep control shaft speed through communication transmission inside the converter system, and the acceleration shaft or creep control shaft speed will not participate in the reference speed determination logic.
3. The control method for suppressing low-speed idling of a locomotive according to claim 1, wherein in S1, the motor torque-current command values are 16A, 24A, 30A, 36A, 45A.
4. The control method for suppressing low-speed idling of a locomotive according to claim 1, wherein in S1, the number of times of idling is detected for acceleration is 2-5 times.
5. The control method for suppressing low-speed idling of a locomotive as claimed in claim 4, wherein in S1, the number of times of idling is detected for acceleration is 3 times.
6. The control method for suppressing low-speed idling of a locomotive according to claim 1, wherein in S2, the number of idling of its shaft is 1, and the number of idling of its own shaft is 8, 13, 28, 34, 56.
7. The method according to claim 1, wherein the detecting the current output from the motor in S12 is performed by a motor current detecting instrument, and is of the type AC-1211.
8. The method according to claim 1, wherein the detection of S1 and S2 is performed simultaneously or sequentially from the completion of the detection of S1 to the detection of S2.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111407914.6A CN113942399B (en) | 2021-11-24 | 2021-11-24 | Control method for inhibiting locomotive from idling at low speed |
| PCT/CN2022/123463 WO2023093307A1 (en) | 2021-11-24 | 2022-09-30 | Control method for suppressing low-speed idling of locomotive |
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| CN202111407914.6A CN113942399B (en) | 2021-11-24 | 2021-11-24 | Control method for inhibiting locomotive from idling at low speed |
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| CN113942399B true CN113942399B (en) | 2023-08-04 |
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| CN113942399B (en) * | 2021-11-24 | 2023-08-04 | 中车大连机车车辆有限公司 | Control method for inhibiting locomotive from idling at low speed |
| CN114407940B (en) * | 2022-02-18 | 2024-03-26 | 中车大连电力牵引研发中心有限公司 | Locomotive idling adjusting method |
| CN117439446B (en) * | 2023-12-13 | 2024-02-20 | 西南交通大学 | Wheel rail slip control method based on wheel rail friction and wear testing machine |
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