[Csantucci]

Can you provide the download link for a loco that is affected by the problem?

[Laci1959]

My link
When you reach and keep the set speed. Good for deceleration and acceleration.
Sorry for copying it to the demo locomotive, but it seemed the fastest.

[Csantucci]

I have started testing. Can you confirm that the problem is only on the Tractive Force Curves and not on the Dynamic Brake Curves? I removed the Tractive Force Curves, modified the Dynamic Brake Curves to adapt to the values of the E464 and I got a good behaviour.

[Laci1959]

 Csantucci, on 16 July 2021 - 09:12 AM, said:

I have started testing. Can you confirm that the problem is only on the Tractive Force Curves and not on the Dynamic Brake Curves? I removed the Tractive Force Curves, modified the Dynamic Brake Curves to adapt to the values of the E464 and I got a good behaviour.

Hello Carlo

Yes exactly.

Regards Laci 1959

[Weter]

@AlbertoSaurio65 This 1970-th era locomotive also had the speed-reference handle and traction/braking current-reference handle, in addition to wheel-style notchless throttle, but I don't know the way to model such cab controls now.
https://upload.wikimedia.org/wikipedia/commons/a/ad/Sr1_ohjaamo.jpg

[Csantucci]

Laci,
I don't understand your ORTSTractionCharacteristics table. The throttle has no influence in your table, which seems a bit strange to me: the force is the same from throttle at 0.1(10%) to throttle at 1 (100%).

Using a more proportional table, where the max force for every speed is reached at 90% of the throttle, I get a correct behaviour in my first test.

[Laci1959]

Hello.
I found it in a Czech vehicle. It was a little weird for me too. The speed controller has no fixed positions, it can be controlled continuously. What is the solution for a continuously controllable controller? Maybe ORTSMaxTractiveForceCurves?

Quote

ORTSMaxTractiveForceCurves (
0 (
0 0
160 0
)
1 (
0kmh 400kN
10kmh 400kN
20kmh 400kN
30kmh 400kN
40kmh 400kN
50kmh 400kN
55kmh 400kN
60kmh 370kN
70kmh 325kN
80kmh 280kN
90kmh 250kN
100kmh 225kN
110kmh 200kN
120kmh 190kN
130kmh 175kN
140kmh 155kN
150kmh 150kN
160kmh 145kN
)
)

This is the setting of a KISS motor train, in which the "Throttle" can also be controlled continuously. Anyway, the same phenomenon is the same.
Regards Laci 1959

[Laci1959]

 Weter, on 16 July 2021 - 11:28 AM, said:

@AlbertoSaurio65 This 1970-th era locomotive also had the speed-reference handle and traction/braking current-reference handle, in addition to wheel-style notchless throttle, but I don't know the way to model such cab controls now.
https://upload.wikimedia.org/wikipedia/commons/a/ad/Sr1_ohjaamo.jpg

Hello.
It is very similar to the MÁV V63 Gigant locomotive. I haven’t dealt with this problem yet, but it will happen sooner or later.
Laci 1959

[steamer_ctn]

 Laci1959, on 16 July 2021 - 01:25 PM, said:

I found it in a Czech vehicle. It was a little weird for me too. The speed controller has no fixed positions, it can be controlled continuously. What is the solution for a continuously controllable controller? Maybe ORTSMaxTractiveForceCurves?

0kmh 400kN
10kmh 400kN
20kmh 400kN
30kmh 400kN
40kmh 400kN
50kmh 400kN
55kmh 400kN................................................

The Tractive force curve shown here is using invalid values.

The values should be in metres/second, and Newtons.

This might be creating some of your problems depending upon how OR is actually interpreting these values.

[Csantucci]

Peter,
it's not so. If you look at the code for the InterpolatorDiesel2D or perform a test, you will see that for speed and force all units of measure generally accepted by OR can be used in these curves, and among them there are kmh and kN.