| Re: speed profiles and braking percentages [message #305 is a reply to message #302] |
Thu, 26 April 2012 23:15   |
Susanne Wunsch railML
Messages: 0
Registered: January 2020
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Hello Dirk and others,
Dirk Bräuer <dirkbraeuer(at)irfpde> writes:
> Susanne wrote:
>> [minimum percentage of brake power]
>>
>> At some railway infrastructure companies the minimum percentage of
>> brake power can't be directly calculated by means of physics. It is
>> somehow defined by some legal body.
>>
>> Therefore we would suggest an additional attribute
>> "minimumBrakePercentage" for this value in the <speedProfile> element.
Thanks for your explanations.
> A more proper solution would be:
> There is a "minimumBrakePercentage" for each section of a speed
> profile between two places where trains can start or end
> (i. e. between two stations).
How about putting this attribute into the "speedChange"?
For sure, it messes up the code. :-(
But this allows for defining "sections of speed aspects" instead of
"lots of quite equal speed profiles".
> ---
> At least, for completeness: If we add a "minimumBrakePercentage" to
> <speedProfile> we also have to provide them with a brake type and a
> brake switch position (rail:tAirBrakeApplicationPosition). The same
> brake percentage can mean totally different braking power depending on
> the brake position (G or P,...).
Thanks again. That's a good point we should forseen.
--
Kind regards...
Susanne
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