CN103660965A - Constant-speed control method and device for electric locomotive - Google Patents
Constant-speed control method and device for electric locomotive Download PDFInfo
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- CN103660965A CN103660965A CN201310651939.XA CN201310651939A CN103660965A CN 103660965 A CN103660965 A CN 103660965A CN 201310651939 A CN201310651939 A CN 201310651939A CN 103660965 A CN103660965 A CN 103660965A
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Abstract
The invention discloses a constant-speed control method and device for an electric locomotive. The method comprises the steps of obtaining the braking force needed by the electric locomotive, comparing the needed braking force and the pre-stored maximum electrical braking force of the electric locomotive, when the needed braking force is larger than the maximum electrical braking force, applying the maximum electrical braking force on the electric locomotive, calculating a differential value between the needed braking force and the maximum electrical braking force, generating and sending a first control signal controlling opening of a brake to the brake, sending the differential value to the brake, and applying the air braking force equal to the differential value on the electric locomotive through the brake. The method and the device solve the problems that the electric locomotive operates in an accelerating mode and danger occurs easily when the electrical braking force is insufficient in the prior art.
Description
Technical field
The present invention relates to electric locomotive technical field, relate in particular a kind of constant speed control method and device of electric locomotive.
Background technology
Electric locomotive refers to the locomotive by wheel driving motor, along with the development of electric locomotive, in order to assist driver driving, to reduce the intensity that driver works, electric locomotive generally disposes constant speed pattern, after constant speed pattern starts, electric locomotive will travel at the uniform speed with target velocity.
In the prior art, electric locomotive is when constant speed pattern, and the brake mode of employing is electric braking, by the tractive force of electric locomotive and electric braking force are switched, guarantee electric locomotive to make a concerted effort be zero, electric locomotive is traveled at the uniform speed.
But, because the electric braking force of electric locomotive is limited, when electric locomotive heavy duty and descending operation, electric braking force may be under-supply, what cause electric locomotive makes a concerted effort to be greater than zero, makes electric locomotive Accelerating running, easily causes danger, therefore there is potential safety hazard in the electric locomotive in constant speed pattern.
Summary of the invention
In view of this, the invention provides a kind of constant speed control method and device of electric locomotive, to solve in prior art, when electric braking force is under-supply, make electric locomotive Accelerating running, the problem of easily causing danger.
For achieving the above object, the invention provides following technical scheme:
A constant speed control method for electric locomotive, comprising:
Obtain the required braking force of electric locomotive;
The size of the maximum electric braking force of the electric locomotive of more described required braking force and pre-stored;
When required braking force is greater than described maximum electric braking force, for described electric locomotive applies described maximum electric braking force, and calculate the difference of required braking force and described maximum electric braking force;
Generate and send control that brake opens first control signal to described brake;
Described difference is sent to described brake, is that described electric locomotive applies the air-making power equating with described difference by described brake.
Preferably, described in obtain the required braking force of electric locomotive, comprising:
Receive after fixed speed signal, obtain the total mass of described electric locomotive and the acceleration/accel of described electric locomotive, and determine the service direction of described electric locomotive; Described fixed speed signal is generated by the constant speed switch being connected with controller by first interface;
Judge when the service direction of described electric locomotive is identical with the direction of described acceleration/accel, according to described acceleration/accel and described total mass, by the first computing formula, calculate the required braking force of described electric locomotive;
Wherein, described the first computing formula is F=ma, the total mass that m is described electric locomotive, and the acceleration/accel that a is described electric locomotive, F is the required braking force of electric locomotive.
Preferably, described difference being sent to described brake, is, after described electric locomotive applies the air-making power equating with described difference, also to comprise by described brake:
When the required braking force of electric locomotive obtaining when judgement increases, determine the recruitment of required braking force;
Described recruitment is sent to described brake, is that described electric locomotive increases the air-making power equating with described recruitment by described brake.
Preferably, described difference being sent to described brake, is, after described electric locomotive applies the air-making power equating with described difference, also to comprise by described brake:
When the required braking force of electric locomotive obtaining when judgement reduces, determine the decrease of required braking force, for described electric locomotive reduces, equate electric braking force with described decrease, until the described electric braking force applying for electric locomotive is reduced to zero;
Generate and send control that described brake cuts out second control signal to described brake, take and excise the air-making power that described brake applies as described electric locomotive, and apply for described electric locomotive the electric braking force that the braking force required with the described electric locomotive obtaining equates.
Preferably, after the size of the maximum electric braking force of described required braking force and the electric locomotive of pre-stored, also comprise:
When required braking force is less than or equal to described maximum electric braking force, for described electric locomotive applies the electric braking force equating with required braking force.
A control device in constant speed for electric locomotive, comprising:
The first acquiring unit, for obtaining the required braking force of electric locomotive;
The first comparing unit, for the size of the maximum electric braking force of the electric locomotive of more described required braking force and pre-stored;
Apply calculating unit, while being greater than described maximum electric braking force for the braking force when required, for described electric locomotive applies described maximum electric braking force, and calculate the difference of required braking force and described maximum electric braking force;
First generates transmitting element, for generate and send control that brake opens first control signal to described brake;
Sending applying unit, for described difference is sent to described brake, is that described electric locomotive applies the air-making power equating with described difference by described brake.
Preferably, described the first acquiring unit comprises:
Obtain determination module, for after receiving fixed speed signal, obtain the total mass of described electric locomotive and the acceleration/accel of described electric locomotive, and determine the service direction of described electric locomotive; Described fixed speed signal is generated by the constant speed switch being connected with controller by first interface;
Computing module, when judging that the service direction of described electric locomotive is identical with the direction of described acceleration/accel, calculates the required braking force of described electric locomotive according to described acceleration/accel and described total mass by the first computing formula;
Wherein, described the first computing formula is F=ma, the total mass that m is described electric locomotive, and the acceleration/accel that a is described electric locomotive, F is the required braking force of electric locomotive.
Preferably, this device also comprises:
The first determining unit, while increasing for the required braking force of electric locomotive obtaining when judgement, determines the recruitment of required braking force;
Sending and increase unit, for described recruitment is sent to described brake, is that described electric locomotive increases the air-making power equating with described recruitment by described brake.
Preferably, this device also comprises:
Determine and reduce unit, while reducing for the required braking force of electric locomotive obtaining when judgement, determine the decrease of required braking force, for described electric locomotive reduces, equate electric braking force with described decrease, until the described electric braking force applying for electric locomotive is reduced to zero;
Second generates transmitting element, for generate and send control that described brake cuts out second control signal to described brake, take and excise the air-making power that described brake applies as described electric locomotive;
The first applying unit, is used to described electric locomotive to apply the electric braking force that the braking force required with the described electric locomotive obtaining equates.
Preferably, this device also comprises:
The second applying unit, while being less than or equal to described maximum electric braking force for the braking force when required, for described electric locomotive applies the electric braking force equating with required braking force.
Known via above-mentioned technical scheme, compared with prior art, the invention discloses a kind of constant speed control method and device of electric locomotive, in the method, when the required braking force of electric locomotive is greater than maximum electric braking force, the electric braking force that has shown electric locomotive is under-supply, by the air-making power that applies respectively maximum electric braking force for electric locomotive and equate with the difference of required braking force and maximum electric braking force, so that making a concerted effort of electric locomotive is zero, can travel at the uniform speed, guarantee the safety of electric locomotive.
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 only embodiments of the invention, for those of ordinary skills, do not paying under the prerequisite of creative work, other accompanying drawing can also be provided according to the accompanying drawing providing.
The schematic flow sheet of the constant speed control method of a kind of electric locomotive that Fig. 1 provides for the embodiment of the present invention;
The schematic flow sheet of the constant speed control method of a kind of electric locomotive that Fig. 2 provides for the embodiment of the present invention;
The schematic flow sheet of the constant speed control method of a kind of electric locomotive that Fig. 3 provides for the embodiment of the present invention;
The structural representation of the control device in constant speed of a kind of electric locomotive that Fig. 4 provides for the embodiment of the present invention;
The structural representation of the constant speed control method of a kind of electric locomotive that Fig. 5 provides for the embodiment of the present invention;
The structural representation of the constant speed control method of a kind of electric locomotive that Fig. 6 provides for the embodiment of the present invention.
The specific embodiment
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 and completely described, obviously, described embodiment is only 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 invention discloses a kind of constant speed control method of electric locomotive, as shown in Figure 1, the method can comprise:
S101: obtain the required braking force of electric locomotive;
When electric locomotive enters after constant speed pattern, in order to guarantee that electric locomotive travels at the uniform speed, need to make electric locomotive to make a concerted effort be zero, need for electric locomotive applies tractive force or braking force, concrete, in this step,
The described needed braking force of electric locomotive that obtains is specifically as follows:
Receive after fixed speed signal, obtain the total mass of electric locomotive and the acceleration/accel of electric locomotive, and determine the service direction of described electric locomotive;
Wherein, fixed speed signal is generated by the constant speed switch being connected with controller by first interface, and this fixed speed signal can be also low level pulse signal for high level pulse signal.
Wherein, first interface is the I/O mouth of controller, constant speed switch is connected with controller by first interface, take fixed speed signal as high level pulse signal be example, after constant speed switch is pressed, generate high level pulse signal, controller receives after high level pulse signal by first interface, can control electric locomotive and enter constant speed pattern.
Wherein, the acceleration/accel of electric locomotive comprises the direction of acceleration/accel and the size of acceleration/accel.
Judge when the service direction of described electric locomotive is identical with the direction of described acceleration/accel, according to described acceleration/accel and described total mass, by the first computing formula, calculate the required braking force of described electric locomotive.
Wherein, when the service direction of electric locomotive and the opposite direction of acceleration/accel, show to apply tractive force for electric locomotive; And when the service direction of electric locomotive is identical with the direction of acceleration/accel, show to apply braking force for electric locomotive;
Concrete, the tractive force that electric locomotive is required and the value of braking force all can calculate by the first computing formula;
The first computing formula is: F=ma, and the total mass that m is described electric locomotive, the acceleration/accel that a is described electric locomotive, F is the required tractive force of electric locomotive or the required braking force of electric locomotive.
S102: the size of the maximum electric braking force of the electric locomotive of more described required braking force and pre-stored;
Wherein, the maxim that maximum electric braking force is the electric braking force that adopts the mode of electric braking and can apply for electric locomotive.
When required braking force is less than or equal to maximum electric braking force, for electric locomotive applies the electric braking force equating with required braking force;
And when required braking force is greater than maximum electric braking force, illustrate that electric braking force is under-supply, in this case, the braking force that need to apply other for electric locomotive is to supplement the required braking force of electric locomotive.
S103: when required braking force is greater than described maximum electric braking force, for described electric locomotive applies described maximum electric braking force, and calculate the difference of required braking force and described maximum electric braking force;
Wherein, the difference that calculates required braking force and maximum electric braking force be take to determine and need to be applied as electric locomotive the size of other braking force.
S104: generate and send control that brake opens first control signal to described brake.
It should be noted that, electric locomotive of the prior art has brake, by brake, can apply air-making power for electric locomotive.
In the present invention, brake is connected with controller by the first switch, and the first control signal can be high level pulse signal, can be also low level pulse signal.
Take the first control signal as high level pulse signal be example, when electric braking force is under-supply, controller triggers the first switch and cuts out, and generates high level pulse signal, brake receives after high level pulse signal to obtain electric opening.
S105: described difference is sent to described brake, is that described electric locomotive applies the air-making power equating with described difference by described brake.
Controller sends to brake by the required braking force calculating and the difference of maximum electric braking force, by brake, is that electric locomotive applies the air-making power identical with this difference to supplement the required braking force of electric locomotive.
In the present embodiment, when the required braking force of electric locomotive is greater than maximum electric braking force, the electric braking force that shows electric locomotive is under-supply, by the air-making power that applies respectively maximum electric braking force for electric locomotive and equate with the difference of required braking force and maximum electric braking force, so that making a concerted effort of electric locomotive is zero, can travel at the uniform speed, guarantee the safety of electric locomotive.
At the same time for electric locomotive applies on the basis of maximum electric braking force and air-making power, when the required braking force of electric locomotive increases, in order to guarantee that electric locomotive can travel at the uniform speed, also need to continue as electric locomotive and apply air-making power, concrete, the embodiment of the present invention also provides a kind of constant speed control method of electric locomotive, and as shown in Figure 2, the method can comprise:
S201: obtain the required braking force of electric locomotive;
S202: the size of the maximum electric braking force of the electric locomotive of more described required braking force and pre-stored;
S203: when required braking force is greater than described maximum electric braking force, for described electric locomotive applies described maximum electric braking force, and calculate the difference of required braking force and described maximum electric braking force;
S204: generate and send control that brake opens first control signal to described brake;
S205: described difference is sent to described brake, is that described electric locomotive applies the air-making power equating with described difference by described brake;
S206: when the required braking force of electric locomotive obtaining when judgement increases, determine the recruitment of required braking force;
Electric locomotive is after receiving fixed speed signal, the action of obtaining the required braking force of electric locomotive continues to carry out, at required braking force, be greater than on the basis of maximum electric braking force, when required braking force increases, determine the recruitment of required braking force, this recruitment was the difference of required braking force of the required braking force of current time and a upper moment;
Wherein, braking force is for electric locomotive has applied the air-making power that the braking force constantly required with upper equates with the difference of maximum electric braking force.
S207: described recruitment is sent to described brake, is that described electric locomotive increases the air-making power equating with described recruitment by described brake.
Wherein, at the same time for electric locomotive applies on the basis of maximum electric braking force and air-making power, when the required braking force of electric locomotive increases, in order to guarantee that electric locomotive can travel at the uniform speed, by brake, continue as electric locomotive and apply the air-making power equating with recruitment, to guarantee that electric locomotive can travel at the uniform speed.
At the same time for electric locomotive applies on the basis of maximum electric braking force and air-making power, when the required braking force of electric locomotive reduces, in order to guarantee that electric locomotive can travel at the uniform speed, also need to be reduced to electric braking force or the air-making power that electric locomotive applies, the embodiment of the present invention also provides a kind of constant speed control method of electric locomotive, as shown in Figure 3, the method can comprise:
S301: obtain the required braking force of electric locomotive;
S302: the size of the maximum electric braking force of the electric locomotive of more described required braking force and pre-stored;
S303: when required braking force is greater than described maximum electric braking force, for described electric locomotive applies described maximum electric braking force, and calculate the difference of required braking force and described maximum electric braking force;
S304: generate and send control that brake opens first control signal to described brake;
S305: described difference is sent to described brake, is that described electric locomotive applies the air-making power equating with described difference by described brake;
S306: when the required braking force of electric locomotive obtaining when judgement reduces, determine the decrease of required braking force, equate electric braking force for described electric locomotive reduces with described decrease, until the described electric braking force applying for electric locomotive is reduced to zero;
Electric locomotive is after receiving fixed speed signal, the action of obtaining the required braking force of electric locomotive continues to carry out, at required braking force, be greater than on the basis of maximum electric braking force, when required braking force reduces, determine the decrease of required braking force, for reducing, described electric locomotive equates electric braking force with described decrease, until described electric braking force is reduced to zero;
This decrease was the difference of required braking force of the required braking force of current time and a upper moment, and braking force is for electric locomotive has applied electric braking force and/or the air-making power that the braking force constantly required with upper equates.
In the present invention, because the variation of air-making power is slower, in order to guarantee that electric locomotive is under constant speed pattern, steady, safe operation, when the required braking force of electric locomotive reduces, preferably reduces electric braking force, then reduces air-making power.
S307: generate and send control that described brake cuts out second control signal to described brake, take and excise the air-making power that described brake applies as described electric locomotive, and apply for described electric locomotive the electric braking force that the braking force required with the described electric locomotive obtaining equates.
When the electric braking force applying for electric locomotive is decreased to zero, if the required braking force of electric locomotive is still reducing, generate the second control signal and close to control brake, after brake cuts out, can not apply air-making power for electric locomotive; Need for electric locomotive applies electric braking force, the electric braking force the applying braking force required with electric locomotive equate simultaneously, take and guarantee the making a concerted effort as zero of electric locomotive, and electric locomotive can travel at the uniform speed.
Wherein, the second control signal is contrary with the level of the first control signal, and when the first control signal is high level pulse signal, the second control signal is low level pulse signal; When the first control signal is low level pulse signal, the second control signal is high level pulse signal.
Take the second control signal as low level pulse signal be example, when the electric braking force applying for electric locomotive is decreased to zero, if the required braking force of electric locomotive is still reducing, controller triggers the first switch opens, generate low level pulse signal, after brake receives low level pulse signal, dead electricity is closed.
The embodiment of the present invention also provides a kind of control device in constant speed of electric locomotive, as shown in Figure 4, this device can comprise: the first acquiring unit 401, the first comparing unit 402, applies calculating unit 403, first and generates transmitting element 404, sends applying unit 405, wherein:
The first acquiring unit 401, can be for obtaining the required braking force of electric locomotive;
The first comparing unit 402, can be for the size of the maximum electric braking force of the electric locomotive of more described required braking force and pre-stored;
Apply calculating unit 403, in the time of can being greater than described maximum electric braking force for the braking force when required, for described electric locomotive applies described maximum electric braking force, and calculate the difference of required braking force and described maximum electric braking force;
First generates transmitting element 404, can for generate and send control that brake opens first control signal to described brake;
Sending applying unit 405, can, for described difference is sent to described brake, be that described electric locomotive applies the air-making power equating with described difference by described brake.
In the present invention, said apparatus can also comprise: the second applying unit, wherein:
The second applying unit, in the time of can being less than or equal to described maximum electric braking force for the braking force when required, for described electric locomotive applies the electric braking force equating with required braking force.
In the present invention, the first acquiring unit can comprise: obtain determination module, computing module, wherein:
Obtain determination module, can obtain the total mass of described electric locomotive and the acceleration/accel of described electric locomotive for after receiving fixed speed signal, and determine the service direction of described electric locomotive; Described fixed speed signal is generated by the constant speed switch being connected with controller by first interface;
Computing module, can when judging that the service direction of described electric locomotive is identical with the direction of described acceleration/accel, calculate the required braking force of described electric locomotive according to described acceleration/accel and described total mass by the first computing formula;
Wherein, described the first computing formula is F=ma, the total mass that m is described electric locomotive, and the acceleration/accel that a is described electric locomotive, F is the required braking force of electric locomotive.
The embodiment of the present invention also provides a kind of control device in constant speed of electric locomotive, as shown in Figure 5, this device can comprise: the first acquiring unit 501, the first comparing unit 502, apply that calculating unit 503, first generates transmitting element 504, sends applying unit 505, the first determining unit 506 and send and increase unit 507, wherein:
The first acquiring unit 501, can be for obtaining the required braking force of electric locomotive;
The first comparing unit 502, can be for the size of the maximum electric braking force of the electric locomotive of more described required braking force and pre-stored;
Apply calculating unit 503, in the time of can being greater than described maximum electric braking force for the braking force when required, for described electric locomotive applies described maximum electric braking force, and calculate the difference of required braking force and described maximum electric braking force;
First generates transmitting element 504, can for generate and send control that brake opens first control signal to described brake;
Sending applying unit 505, can, for described difference is sent to described brake, be that described electric locomotive applies the air-making power equating with described difference by described brake;
The first determining unit 506, when braking force that can be required for the electric locomotive obtaining when judgement increases, determines the recruitment of required braking force;
Sending and increase unit 507, can, for described recruitment is sent to described brake, be that described electric locomotive increases the air-making power equating with described recruitment by described brake.
The embodiment of the present invention also provides a kind of control device in constant speed of electric locomotive, as shown in Figure 6, this device can comprise: the first acquiring unit 601, the first comparing unit 602, applies calculating unit 603, first and generates transmitting element 604, sends applying unit 605, determines that reducing unit 606, second generates transmitting element 607 and the first applying unit 608, wherein:
The first acquiring unit 601, can be for obtaining the required braking force of electric locomotive;
The first comparing unit 602, can be for the size of the maximum electric braking force of the electric locomotive of more described required braking force and pre-stored;
Apply calculating unit 603, in the time of can being greater than described maximum electric braking force for the braking force when required, for described electric locomotive applies described maximum electric braking force, and calculate the difference of required braking force and described maximum electric braking force;
First generates transmitting element 604, can for generate and send control that brake opens first control signal to described brake;
Sending applying unit 605, can, for described difference is sent to described brake, be that described electric locomotive applies the air-making power equating with described difference by described brake;
Determine and reduce unit 606, in the time of can reducing for the required braking force of electric locomotive obtaining when judgement, determine the decrease of required braking force, for described electric locomotive reduces, equate electric braking force with described decrease, until the described electric braking force applying for electric locomotive is reduced to zero;
Second generates transmitting element 607, can for generate and send control that described brake cuts out second control signal to described brake, take and excise the air-making power that described brake applies as described electric locomotive;
The first applying unit 608, can be used to described electric locomotive to apply the electric braking force that the braking force required with the described electric locomotive obtaining equates.
The specific implementation of each device can be referring to the corresponding embodiment of specification sheets method above, and in this not go into detail.
Above in each device, when the required braking force of electric locomotive is greater than maximum electric braking force, the electric braking force that has shown electric locomotive is under-supply, by the air-making power that applies respectively maximum electric braking force for electric locomotive and equate with the difference of required braking force and maximum electric braking force, so that making a concerted effort of electric locomotive is zero, can travel at the uniform speed, guarantee the safety of electric locomotive.
In this specification sheets, each embodiment adopts the mode of going forward one by one to describe, and each embodiment stresses is the difference with other embodiment, between each embodiment identical similar part mutually referring to.For the disclosed device of embodiment, because it corresponds to the method disclosed in Example, so description is fairly simple, relevant part partly illustrates referring to method.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the present invention.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a constant speed control method for electric locomotive, is characterized in that, comprising:
Obtain the required braking force of electric locomotive;
The size of the maximum electric braking force of the electric locomotive of more described required braking force and pre-stored;
When required braking force is greater than described maximum electric braking force, for described electric locomotive applies described maximum electric braking force, and calculate the difference of required braking force and described maximum electric braking force;
Generate and send control that brake opens first control signal to described brake;
Described difference is sent to described brake, is that described electric locomotive applies the air-making power equating with described difference by described brake.
2. constant speed control method according to claim 1, is characterized in that, described in obtain the required braking force of electric locomotive, comprising:
Receive after fixed speed signal, obtain the total mass of described electric locomotive and the acceleration/accel of described electric locomotive, and determine the service direction of described electric locomotive; Described fixed speed signal is generated by the constant speed switch being connected with controller by first interface;
Judge when the service direction of described electric locomotive is identical with the direction of described acceleration/accel, according to described acceleration/accel and described total mass, by the first computing formula, calculate the required braking force of described electric locomotive;
Wherein, described the first computing formula is F=ma, the total mass that m is described electric locomotive, and the acceleration/accel that a is described electric locomotive, F is the required braking force of electric locomotive.
3. constant speed control method according to claim 1, is characterized in that, described difference is sent to described brake, by described brake, is, after described electric locomotive applies the air-making power equating with described difference, also to comprise:
When the required braking force of electric locomotive obtaining when judgement increases, determine the recruitment of required braking force;
Described recruitment is sent to described brake, is that described electric locomotive increases the air-making power equating with described recruitment by described brake.
4. constant speed control method according to claim 1, is characterized in that, described difference is sent to described brake, by described brake, is, after described electric locomotive applies the air-making power equating with described difference, also to comprise:
When the required braking force of electric locomotive obtaining when judgement reduces, determine the decrease of required braking force, for described electric locomotive reduces, equate electric braking force with described decrease, until the described electric braking force applying for electric locomotive is reduced to zero;
Generate and send control that described brake cuts out second control signal to described brake, take and excise the air-making power that described brake applies as described electric locomotive, and apply for described electric locomotive the electric braking force that the braking force required with the described electric locomotive obtaining equates.
5. constant speed control method according to claim 1, is characterized in that, after the size of the maximum electric braking force of described required braking force and the electric locomotive of pre-stored, also comprises:
When required braking force is less than or equal to described maximum electric braking force, for described electric locomotive applies the electric braking force equating with required braking force.
6. a control device in constant speed for electric locomotive, is characterized in that, comprising:
The first acquiring unit, for obtaining the required braking force of electric locomotive;
The first comparing unit, for the size of the maximum electric braking force of the electric locomotive of more described required braking force and pre-stored;
Apply calculating unit, while being greater than described maximum electric braking force for the braking force when required, for described electric locomotive applies described maximum electric braking force, and calculate the difference of required braking force and described maximum electric braking force;
First generates transmitting element, for generate and send control that brake opens first control signal to described brake;
Sending applying unit, for described difference is sent to described brake, is that described electric locomotive applies the air-making power equating with described difference by described brake.
7. control device in constant speed according to claim 6, is characterized in that, described the first acquiring unit comprises:
Obtain determination module, for after receiving fixed speed signal, obtain the total mass of described electric locomotive and the acceleration/accel of described electric locomotive, and determine the service direction of described electric locomotive; Described fixed speed signal is generated by the constant speed switch being connected with controller by first interface;
Computing module, when judging that the service direction of described electric locomotive is identical with the direction of described acceleration/accel, calculates the required braking force of described electric locomotive according to described acceleration/accel and described total mass by the first computing formula;
Wherein, described the first computing formula is F=ma, the total mass that m is described electric locomotive, and the acceleration/accel that a is described electric locomotive, F is the required braking force of electric locomotive.
8. control device in constant speed according to claim 6, is characterized in that, this device also comprises:
The first determining unit, while increasing for the required braking force of electric locomotive obtaining when judgement, determines the recruitment of required braking force;
Sending and increase unit, for described recruitment is sent to described brake, is that described electric locomotive increases the air-making power equating with described recruitment by described brake.
9. control device in constant speed according to claim 6, is characterized in that, this device also comprises:
Determine and reduce unit, while reducing for the required braking force of electric locomotive obtaining when judgement, determine the decrease of required braking force, for described electric locomotive reduces, equate electric braking force with described decrease, until the described electric braking force applying for electric locomotive is reduced to zero;
Second generates transmitting element, for generate and send control that described brake cuts out second control signal to described brake, take and excise the air-making power that described brake applies as described electric locomotive;
The first applying unit, is used to described electric locomotive to apply the electric braking force that the braking force required with the described electric locomotive obtaining equates.
10. control device in constant speed according to claim 6, is characterized in that, this device also comprises:
The second applying unit, while being less than or equal to described maximum electric braking force for the braking force when required, for described electric locomotive applies the electric braking force equating with required braking force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310651939.XA CN103660965B (en) | 2013-12-05 | 2013-12-05 | A kind of constant speed control method of electric locomotive and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310651939.XA CN103660965B (en) | 2013-12-05 | 2013-12-05 | A kind of constant speed control method of electric locomotive and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103660965A true CN103660965A (en) | 2014-03-26 |
| CN103660965B CN103660965B (en) | 2016-02-17 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105365843A (en) * | 2015-12-03 | 2016-03-02 | 南车株洲电力机车有限公司 | City rail train supplement air brake controlling method |
| CN105437984A (en) * | 2015-12-08 | 2016-03-30 | 南车株洲电力机车有限公司 | Braking method for urban rail vehicle |
| CN107253452A (en) * | 2017-06-28 | 2017-10-17 | 北京新能源汽车股份有限公司 | Electric automobile constant-speed-cruise control method and device during battery limitation charging |
| CN107444371A (en) * | 2017-08-17 | 2017-12-08 | 中车株洲电力机车有限公司 | A kind of magnetic-levitation train and its braking control system and method |
| CN111267637A (en) * | 2019-12-03 | 2020-06-12 | 中国国家铁路集团有限公司 | Motor train unit speed control method and system |
| CN111391880A (en) * | 2020-04-09 | 2020-07-10 | 中车青岛四方车辆研究所有限公司 | Control method and control system for air-electricity hybrid braking of locomotive |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105365843A (en) * | 2015-12-03 | 2016-03-02 | 南车株洲电力机车有限公司 | City rail train supplement air brake controlling method |
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| CN107253452A (en) * | 2017-06-28 | 2017-10-17 | 北京新能源汽车股份有限公司 | Electric automobile constant-speed-cruise control method and device during battery limitation charging |
| CN107253452B (en) * | 2017-06-28 | 2020-03-10 | 北京新能源汽车股份有限公司 | Method and device for controlling constant-speed cruise of electric vehicle during limited charging of battery |
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| CN107444371B (en) * | 2017-08-17 | 2019-08-20 | 中车株洲电力机车有限公司 | A kind of magnetic-levitation train and its braking control system and method |
| CN111267637A (en) * | 2019-12-03 | 2020-06-12 | 中国国家铁路集团有限公司 | Motor train unit speed control method and system |
| CN111391880A (en) * | 2020-04-09 | 2020-07-10 | 中车青岛四方车辆研究所有限公司 | Control method and control system for air-electricity hybrid braking of locomotive |
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