Sunday, June 5, 2011

F1 2011 Monaco Race - How to Drive the Circuit

Following on from F1 2011 Monaco Race - Hamilton's "G-Force" Experience, where I used a capture of the Mclaren F1 live streamed telemetry data to show some basic charts capturing Hamilton;s view of the race, I thought it might be worthwhile seeing what sorts of chart might help us get a feel for the race from the circuit's perspective.

Ideally, this would be based on the use of GPS data, but that was a bit ropey from Monaco so we'll have to settle with an abstraction of the circuit - the distance round the track (the sLap telemtry measure), and see what we can learn from that.

To put things in a bit of perspective, here's a review of the circuit map, as taken from the FIA presspack for the race:


So - how does a tour of the circuit look when we "linearise" it?


The brake force versus the distance round the track:



The brake force versus the distance round the track, coloured by gear:



The throttle versus distance round the track:



The throttle versus the distance round the track, coloured by gear:



How does all this translate in to speed? Here's the car speed round the circuit?



And the speed coloured by gear:



To what extent might we be able to identify the corners form a comparison of the lateral and longitudinal "g-forces"? Here' gLat as we go round the circuit:



And gLong:



Is there anything of interest in the gLat plot, as coloured by gear?



To what extent might we be able to get a better understanding of how the drivers handle a particular corner? Let's consider turn 1...

First, the brake force:



And the throttle:



We can also plot these on the same chart:



The longitudinal "g-force" (to show baking and acceleration):



And the lateral "g-force" to show the car being flung round the corner:



Here's how fact the car was traveling round corner 1:



And the speed round the corner as coloured by gear:



So - that's a range of charts that are available. Which do you like (and why?) And what sort of commentary might be useful around them?

PS plots are generated using R and commands of the form:
plot(rThrottlePedal|pBrakeF~sLap,data=subset(HAMfull_mco_2011),main="F1 2011 Monaco - HAM Telemetry",col=NGear,xlim=c(0,500))
legend("right",c("1","2","3","4","5","6","7"),col=1:7,pch=1)


For the overplot (multiple data sets on the same chart, e.g. throttle and brake), use a recipe of the form:

plot(rThrottlePedal~sLap,data=subset(HAMfull_mco_2011),main="F1 2011 Monaco - HAM Telemetry",xlim=c(0,500),pch=3)
points(pBrakeF~sLap,data=subset(HAMfull_mco_2011),xlim=c(0,500),pch=2)
legend("right",c("Throttle","Brake"),pch=3:2)



Telemtry data is grabbed from the McLaren F1 Live Dashboard during the race and is Copyright (©) McLaren Marketing Ltd 2011 (I think? Or possibly Vodafone McLaren Mercedes F1 2011(?)). Last year, I think that speed, throttle and brake data were sponsored by Vodafone; I'm not sure how it stands this year.
As ever, thanks to @bencc for grabbing the data.

1 comment:

  1. Nice and good article. It is very useful for me to learn and understand easily. Thanks for sharing your valuable information and time. Please keep updating MicroStrategy Online course Hyderabad

    ReplyDelete

There seem to be a few issues with posting comments. I think you need to preview your comment before you can submit it... Any problems, send me a message on twitter: @psychemedia