JPS5937644B2 - How to start the vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for starting a vehicle, and particularly to a starting force method suitable for starting a vehicle such as a diesel locomotive that tows a heavy load.

When starting a vehicle that is towing a heavy load, it is possible that the vehicle will spin.

Therefore, in the manual driving system, the vehicle is started up one by one by repeatedly advancing and descending the notches.

On the other hand, in the conventional automatic driving system, when the vehicle starts idling, the notch output is turned off at time t1 when idling is detected, and the notch output is turned off for a certain period of time τ, as shown in FIG.

Later, I will advance Notsuchi again in a timed manner.

In the figure, a straight line Na indicated by a chain line indicates a permissible notch, that is, a slip limit notch (three notches in the figure).

As a result, the notch output is cut off when the vehicle is about to start, or for a certain period of time τ thereafter.

This resulted in the vehicle being unable to be started, resulting in inferior performance for pulling out heavy loads compared to the two-manual driving force type.

SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle starting force method that can solve these problems and improve the ability to pull out heavy loads.

In order to achieve this object, the present invention is characterized in that when idling is detected, the notch output is not cut off, the notch is stepped down a certain number of notches, and after readhesion, the notch is advanced to a notch one notch lower than the notch at the time of idling. shall be.

Hereinafter, one embodiment of the present invention will be described in detail with reference to FIGS. 2 to 4.

Fig. 2 is a diagram showing a time sequence during idling in the starting force method according to an embodiment of the present invention, and Fig. 3 is a block diagram showing an example of an automatic driving device for implementing the starting force method of the present invention. It is a diagram.

In FIG. 3, reference numeral 1 denotes a command receiving section which transmits control commands such as driving, braking, etc. to an output notch calculating section to be described later.

2 is a speed generator, 3 is a waveform shaping section, 4 is an idle detection section, 5
6 is a slip counter that counts the number of slips; 6 is a slip notch storage unit that stores the output notch when slip is detected; 7
Reference numeral 8 indicates a permissible notch storage section that stores a predetermined slip limit notch, and 8 is a time limit setting section that determines the output time interval of the output notch based on the slip limit notch and the number of slips.

Reference numeral 9 denotes an output notch calculation section which receives control commands from the command receiving section 1, train speed signals from the speed generator 2, and slip detection section 4.
The output notch is calculated and output from the output of the time limit setting section 8, the output of the time limit setting section 8, and the like.

10 is an output buffer for amplifying the output command.

Further, FIG. 4 is a detailed diagram 7172 showing a specific configuration of the output notch calculating section 9. As shown in FIG.

In FIG. 4, reference numeral 11 indicates a power line and brake discrimination unit that determines whether the control command from the command receiving unit 1 is a power line command or a brake command; and 12, a target speed generator that generates a target speed pattern in response to the force line command. Parts 13 and 13 indicate the maximum brake notch that does not slip, which is determined by the speed, depending on the type of brake command. be.

same as below. ) is output depending on the combination of on and off.

A brake checking section 14 compares the target speed pattern with the actual train speed and outputs the deviation, and 15 determines a notch according to the magnitude of this speed deviation, as shown in FIG. , a notch conversion section which outputs this by a combination of on and off of a plurality of output signal lines, 16 a start detection section which detects whether or not the train has started, 17 a notch advancement section which advances the notches one notch at a time according to a time limit. The notch advancer 18 is composed of a notch subtracter, a lower limit notch command section, and a higher notch selection output section.

The notch subtractor consists of a simple subtraction circuit, and when a slip is detected, in the example shown in FIG. 2, it arithmetically subtracts three notches from the output notch 4 of the notch storage section 6 at the time of slip.

The lower limit notch command section controls the minimum notch that remains even when idling (
In the example of FIG. 2, the command is 17.

Further, the high-ridge notch selection output section selects and outputs a high-order notch among the output notches of the notch subtractor and the lower limit notch command section.

In the example shown in Figure 2, the output of the notch subtractor and the lower limit notch command unit are both 1 notch, so 17 notches are output, but if the rail adhesion conditions are poor and the output is 37 as shown in Figure 2, the rail will idle. If this occurs, the output of the notch subtractor will be 0 notches, and the output of the lower limit notch command section will be 1 notch, so
Outputs one high-order notch.

That is, when detecting slippage, the subtracter 18 outputs the lower notch, leaving at least one notch.

Note that each of these parts constituting the subtracter 18 is a technology commonly used in general digital logic circuits, so a detailed explanation thereof will be omitted.

Reference numeral 19 denotes a brake switching section, which judges the input signal from the brake checking section 13 and commands from the notch converting section 15, etc., which consists of combinations of ON and OFF states of a plurality of output signal lines as described above. Among these commands, the safe command, that is, the command for strong braking, is given priority and output.

That is, when conflicting commands are issued, such as a brake command from the brake checking unit 13 and a go command from the notch replacement unit 15, the brake command is output, and the brake checking unit 13 outputs a brake command, and the notch replacement unit outputs a brake command. When the brake 3 notch is output from 15, the brake 3/touch is output.

In general, the brake checking section 13 and the notch replacing section 15 are
(or notch advancer 17 and subtracter 18), so this row, brake switching unit 1
9 is for protective operation in the event of a failure, and does not necessarily have to be provided.

Now, when the command receiving unit 1 receives a go command, the target speed generating unit 12 generates a target speed to be followed during automatic driving.

A notch output corresponding to the deviation between the target speed and the train speed is calculated by the speed comparator 14 and the notch converter 15, but this notch is not output since the start has not yet been detected.

- The notch advancer 17 advances the row notches one notch at a time at a constant interval τ1, as shown in FIG.
When the row notch matches the slip limit notch (3 notches in FIG. is maintained for 12 hours.

If the train does not start again in this state, it advances one notch further.

If the wheel slips at this point, the output of the wheel slip detector 4 will cause the
A notch (one notch in FIG. 2) obtained by subtracting a fixed notch (three notches in FIG. 2) from the output notch by a subtractor 18 is output.

After re-adhesion is detected (time t2), the output notch (4 notches in Fig. 2) is one step higher than the output notch (4 notches in Fig. 2) at t1 when slipping is detected.
3 notches in Figure 2), and the idle counter 5" is output.
1 ''', the time interval switches to τ3 (τ3>τ2),
If it still does not start, advance one notch further.

If it slips again here, it descends a certain number of notches in the same way, and after re-adhering, it outputs a one-step royal notch from the output notch at the time of slipping detection, and this time the slip counter 5 is 2''. , the time interval is set to τ4 (τ4 and τ3) in the time limit setting unit 8.
).

If the train still does not start, the train is advanced one notch again, and if the train is idling, the same control is repeated to start the train.

When the train starts, the notches from the notch exchange section 15 are output.

When the notch is idle at the output notch of the notch converter 15, the output of the idle detector 4 is used to output a notch obtained by subtracting a certain notch as in the case of startup.

As explained above, according to the present invention, when idling is detected, the notch output is not cut off, the notch is stepped down by a certain number of notches, and after re-adhesion, the notch is advanced to a notch one notch lower than the notch at the time of idling. It is possible to improve the ability to pull out heavy loads and tow heavier loads than before, without having to cut off the notch output or stop the vehicle for a certain period of time like before, and improve driving efficiency. It becomes possible.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a time sequence during idling during startup of a conventional automatic driving system, FIG. 2 is a diagram showing a time sequence during idling in a startup method according to an embodiment of the present invention, and FIG. 4 is a block diagram showing an example of an automatic driving device for implementing the starting force method of the present invention, FIG. 4 is a block diagram showing a specific configuration of the output notch calculation section shown in FIG. 3,
FIG. 5 is an explanatory diagram showing the relationship between the force and the brake notch with respect to the speed deviation. 1...Command receiving unit, 2...Speed generator, Meter...Waveform shaping unit, 4...Slip detection unit, 5... Idling counter, 6... Idling notch storage section, 7... Permissible notch storage section, 8.
...Time limit setting section, 9...Out cut f-
Performance N part, 10... Output buffer.

Claims (1)

[Claims] 1. In a device that starts the vehicle by advancing to the slip limit notch in a timed manner, if the vehicle cannot be started at the slip limit notch, the vehicle advances to a higher notch, and if the vehicle spins at this notch. , descends to the royal notch with at least 17 notches remaining, and after readhesion, advances to a notch that is one notch lower than the notch at the time of idling, and thereafter repeats the same operation as described above. force law. 2. A method for starting a vehicle according to claim 1, characterized in that the driving time at a notch one notch lower than the notch at the time of idling is extended in accordance with the number of times of idling.