JP2703834B2 - Operation curve creation method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for automatically creating a train speed at each position in a train schedule creation system.

[0002]

2. Description of the Related Art Conventionally, there has been provided a driving curve creating method in which an expert can create and correct a running curve by trial and error while interacting with a computer via a display, a mouse or a keyboard.

[0003]

In the conventional operation curve creation method, the operation curve components are selected, the operation curve component drawing start point and the drawing end point are specified, and unnecessary operation curve portions are deleted. The start point and the end point of erasing must be sequentially instructed to the computer, and the point where the notch is turned off and the point at which the brake is applied must also be determined by trial and error by the operator, and a driving curve is created. There was a problem that it took time.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to provide an operation curve creation method which has good operability and can create an operation curve in a short period of time. I do.

[0005]

SUMMARY OF THE INVENTION According to the present invention, there is provided a method for creating an operating curve, comprising: an end point speed of a final slope within a speed limit range or an end point for each slope so that a train operating speed does not exceed a speed limit on a down slope. The notch-off limit curve calculated in the reverse direction with respect to the train running direction with the speed as the speed limit and the brake limit curve calculated in the reverse direction with respect to the train running direction at the target position when the brake is applied at the target position with a computer. In addition to drawing in advance, the operator draws the power curve component from the departure station by selecting the power curve component from the operator and specifying the departure station position, and also selects the operation curve component from the operator and performs the operation. The operation curve component is drawn by designating the drawing start position (end point) of the curve component.

[0006]

[Operation] In the present invention, the operating curve components are:
The point specified by the operator as the end point, the point where the train operating speed reaches the limit, the point where the train speed exceeds the speed limit, the point where the speed limit changes, or the point where the train reaches the curve at the departure station or the train operating speed Is drawn by inverse distance calculation to the point where the speed reaches zero.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a flowchart showing an embodiment of the present invention, FIG. 2 is a diagram showing a method of creating a notch-off limit curve, FIG. 3 is a diagram showing a method of creating a brake limit curve, and FIG. It is a diagram showing the type of component,
FIG. 5 is a diagram showing a drawing method of a power curve element, FIG. 6 is a diagram showing a drawing method of an operation curve component, and FIG. 7 is a diagram showing a connection method between the operation curve components. FIG. 8 is a diagram illustrating an example of an operation curve when an operation curve is created according to the present embodiment. In the figure, 1 is a notch-off limit curve,
2 is the speed limit, 3 is the departure station, 4 is the arrival station, 5-1 and 5-
2, 5-3, 5-4, 5-5 and 5-6 are downhills, 6 is a horizontal distance axis, 7 is a vertical speed axis, 8 is a brake limit curve, 9, 9-1 and 9 -2, 9-3, and 9-4 are power curves, 10, 10-, which are one of the components of the operation curve.
1, 10-2, 10-3, 10-4, and 10-5 are brake curves, 11-1 and 1, which are one of the components of the operation curve.
1-2 and 11-3 are coasting curves which are one component of an operation curve.

The operation of one embodiment of the present invention will be described with reference to the flowchart of FIG. 1 and FIGS. First, a notch-off limit curve and a brake limit curve are created on a computer as preparation before creating an operation curve.

Step 21: Creation of Notch-Off Limit Curve by Computer FIG. 2 shows a method of creating a notch-off limit curve. In the figure, the end speeds of the last downhills 5-1, 5-2, 5-3, 5-4, 5-5 and 5-6 of the change section of the speed limit 2 are set as speed limits (points A and B). , C point, D point, E
To the point where the speed limit changes due to the speed reverse calculation in the direction opposite to the train running direction (the train acceleration at each speed, line resistance, etc. are the calculation parameters).
Point, point H) or until the speed limit is reached (point I,
J point) Create a curve. In all other cases, a curve matching the speed limit 2 is created. A notch-off limit curve 1 is created by combining these two curves. The notched off limit curve 1 is shown by a bold curve in the figure. When the notch is turned off at a speed greater than the notch-off limit curve 1, the train is accelerated on a downhill and exceeds the speed limit. Therefore, when the train runs at a speed exceeding the notch-off limit curve 1 (of course, within the speed limit), the brake must be applied before or at the speed limit.

Step 22: Creation of brake limit curve by computer FIG. 3 shows a method of creating a brake limit curve. In the figure, the speed at the four points at the arrival station (point A) is zero, or the speed at the start point of the speed limit recess is the speed limit (points B, C, D, E). Until the speed limit changes (point F) or until the speed limit is reached (points G, H, and I) by calculation (the acceleration force of the train at each speed, the line resistance, etc. are calculation parameters). Or a brake limit curve 8 is created up to the departure station 3 points (point J). The brake between the points A and F uses a stop brake for stopping the train, and the other brakes use a limited brake which is a loose brake. In the drawing, the curve that is bolded is the brake limit curve 8. If the brake is applied at a speed higher than the brake limit curve 8, the target speed cannot be obtained at the target position. Therefore, the train must apply a brake at any point along the brake limit curve 8. The operator must designate the drawing start position (end point) of the driving curve component within the range surrounded by the brake limit curve 8 and the speed limit (the hatched range in FIG. 3).

After the above preparation, the computer creates an operation curve interactively with the operator. The operation curve creation procedure will be described below. Step 23: First, the operator selects a line to be drawn from the operation curve components in order to line the train from the departure station. FIG. 4 shows an example of the operation curve components prepared on the computer. There are six types of operation curve components. When accelerating the train, since the thrust of the motor varies depending on the notch, the power line is divided into three types (a power line with two notches, a power line with three notches, and a power line with four notches). In addition, brakes for decelerating trains are also divided into two types (restricted brakes ... loose brakes, stop brakes ...
• Prepare the brakes to be used to stop the train). Further, a coasting curve component for coasting the train is prepared. Step 24: Next, the operator designates the drawing start position (start point... Departure station) of the curvilinear curve component selected in (step 23). Step 25: The computer calculates the train speed using the instantaneous motor thrust, running resistance, etc., and the point at which the train operating speed reaches the speed limit from the designated starting point, or when the train speed exceeds the speed limit. The power curve component is drawn until the speed limit change point or the brake limit curve is reached or the train operating speed reaches speed zero. This power curve is used as one of the limits for determining the curve drawing end point when the subsequent operation curve components are drawn. The procedure of steps 23 to 25 will be described with reference to FIG. First, the operator selects one of the three types of rows as the operating curve component.
Then, the departure station 3 (point of zero speed... Point A) is designated as the drawing start position of the power line curve 9 with a mouse pick. When the above selections and designations are given to the computer, the computer calculates the train speed of the train using the instantaneous thrust of the motor, running resistance, etc., and the train operation speed is reduced from the designated starting point (point A) to the speed limit. , Or the point at which the train speed exceeds the speed limit, at which point the train speed exceeds the speed limit, or until the brake limit curve is reached, or until the train operation speed reaches speed zero, the power line curve 9 is drawn (FIG. In FIG. 5, the drawing is performed up to the point (point B) where the brake limit curve is reached).

Step 26: The operator selects a stop brake from the operation curve components to draw a stop brake curve with the arrival station as an end point. The selection method is the same as in step 23. Step 27: Next, the operator specifies the drawing start position (end point... Arrival station) of the stop brake curve element selected in step 26. Step 28: The computer calculates the train speed using the instantaneous motor thrust, running resistance, etc., and the point at which the train operating speed reaches the speed limit from the specified end point, or when the train speed exceeds the speed limit. The stop brake curve component is drawn until the point at which the speed limit changes or the train operating speed reaches zero speed, or until it reaches the power line curve 9 created above. The procedure of steps 26 to 28 will be described with reference to FIG. First, the operator selects, for example, a stop brake as the operating curve component.
The drawing start position of the brake curve 10 is designated by the mouse pick at the arrival station 4 (point at zero speed... Point A). When the above selection and designation commands are given to the computer, the computer calculates the train speed by the stop brake using the momentary thrust of the motor, running resistance, and the like, and calculates the designated end point (A
From the point), where the train operating speed reaches the speed limit, or the point where the train speed exceeds the speed limit, the changing point of the speed limit, or until the train operating speed reaches zero speed, or reaches the power line curve 9. To the point where the brake curve 1
0 is drawn (draws up to the point (point B) where the train speed exceeds the limit in FIG. 6 where the train speed exceeds the limit).

Step 29: The operator selects a new operating curve component to connect the new operating curve component to the operating curve component. The selection method is the same as in step 23. Step 30: Next, the operator specifies a new operation curve component drawing start position (end point) along the old operation curve component curve. Step 31: The computer calculates the train speed using the momentary thrust of the motor, running resistance, etc., and the point where the train operating speed reaches the speed limit from the specified end point, or the train speed exceeds the speed limit. The operating curve components are drawn until the speed limit change point or the train operating speed reaches zero speed or until the above-described power line curve 9 is reached. Further, the computer deletes a part of the old operation curve components before the newly designated operation curve component drawing start position (end point). The procedure of steps 29 to 30 will be described with reference to FIG. Since the brake curve 10 has been created up to step 28, the operator selects the operating curve component to be drawn next (assuming that coasting is selected here). Then, an arbitrary point (point C) along the brake curve 10 is designated as a drawing start position (end point) of the coasting curve 11. When the above selection and designation commands are given to the computer, the computer calculates the train speed by coasting using the instantaneous thrust of the motor, running resistance, etc., and specifies the designated end point (C
From the point) where the train operating speed reaches the speed limit, or the point at which the train speed exceeds the speed limit and the speed limit changes or until the train operating speed reaches zero speed, or Draw the coasting curve component until curve 9 is reached. (In FIG. 7, the drawing is drawn up to the point (point D) at which the train speed exceeds the speed limit. Further, the computer deletes the old brake curve component portion (the curve between points B and C) before the newly designated coasting curve drawing start position (point C). As described above, the coasting curve 11 is connected to the brake curve 10. Next, in step 32, it is determined whether or not the creation of the operation curve has been completed.
If not completed, the operation curve from the arrival station to the departure station can be created by repeating the procedure of steps 29 to 31. The notch-off limit curve is used by the operator to easily determine the speed at which the vehicle can coast without braking. FIG. 8 shows an example of creating an operation curve created in this way.

In the above embodiment, even if the speed limit does not coincide with the speed limit due to physical line conditions or the like, the same effect can be obtained even if a value is appropriately selected within the gist of the present description. Further, the notch-off limit curve is used for facilitating the judgment of the operator, but the same effect can be obtained even if the notch-off limit curve is used as a drawing end point when the computer draws the operation curve component. In addition, although there are six types of operation curve components, the same effect is obtained even if the types increase or decrease. In addition, the designation of the drawing start position is performed by the mouse pick, but the same effect can be obtained by another method.
Furthermore, when connecting a new operation curve component to an old operation curve component, a new operation curve component drawing start position (end point) is designated along the old operation curve component curve. It is not necessary to strictly match the values of the old operation curve component element curves, and the same effect can be obtained even if the position or the speed is specified.

[0015]

As described above, according to the present invention, the end point speed of the last slope or the end point speed of each slope is limited within the speed limit range so that the train operating speed does not exceed the speed limit on the down slope. A step of preparing in advance a notch-off limit curve calculated in the reverse direction with respect to the train traveling direction by a computer as a speed, and a brake calculated in the reverse direction with respect to the train traveling direction so as to have the target speed at the target position when the brake is applied. A step of preparing a limit curve by a computer in advance, a step of drawing a curve element from the departure station by selecting a curve element from the operator and specifying a departure station position, and a step of constructing an operation curve from the operator By selecting the element and designating the drawing start position (end point) of the operation curve component, the designated position is set as the end point, and the operation curve configuration element is calculated by inverse distance calculation. And thus better operability because including the step of drawing a, and an effect that short time operation curve as compared with the conventional can be created.

[Brief description of the drawings]

FIG. 1 is a flowchart showing an embodiment of the present invention.

FIG. 2 is a diagram illustrating a method of creating a notch-off limit curve.

FIG. 3 is a diagram showing a method of creating a brake limit curve.

FIG. 4 is a diagram showing types of operation curve components.

FIG. 5 is a diagram illustrating a method of drawing a power line curve element.

FIG. 6 is a diagram showing a drawing method of an operation curve component.

FIG. 7 is a diagram showing a connection method between operation curve components.

FIG. 8 is a diagram showing an example of an operation curve when an operation curve is created according to an embodiment of the present invention.

[Explanation of symbols]

1 Notch-off limit curve 8 Brake limit curve 9, 9-1, 9-2, 9-3, 9-4 Curve curve 10, 10-1, 10-2, 10-3, 10-4, 10
-5 Brake curve 11-1, 11-2, 11-3 Coasting curve

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-79705 (JP, A) JP-A-4-257767 (JP, A) JP-A-63-43502 (JP, A) JP-A-50- 59908 (JP, A) Osamu Yamamoto and four others, "Development of a new train operation curve creation system", 28th National Symposium on Cybernetics Utilization in Railways, Japan Railway Cybernetics Association, p. 126-130

Claims (1)

(57) [Claims] In a planning operation for determining a train operating speed at each position between stations, a method in which an operator and a computer create an operating curve in an interactive manner, wherein the train operating speed is limited on a downhill slope. Creating in advance a notch-off limit curve calculated in the reverse direction with respect to the train traveling direction by using a computer as a limit speed with the end speed of the final slope within the speed limit range or the end speed of each slope in the speed limit range, and applying a brake. At the target position, a step of preparing in advance by computer a brake limit curve calculated in the reverse direction with respect to the train traveling direction so as to reach the target speed, selecting the power line component from the operator and determining the departure station position. Drawing a line curve component from the departure station by designating, selecting an operation curve component from an operator, and opening the drawing of the operation curve component Drawing a running curve component by inverse distance calculation with a designated position as an end point by designating a start position (end point).