Calculation of deviation from target path - ADAMS CAR

[John.B]

Hi,
Is there any measurable way to calculate the deviation of the vehicle from the targeted path in simulations like Constant Radius Cornering.
Please find the screenshot below for reference.

 

[GregLocock]

I'd have thought there were functions that captured the SmartDriver behavior, although frankly you actually know both the desired path and the actual path.

Cheers

Greg Locock


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[alok_singh]

I think by measuring the slip angle at each tire(it will be a function of vehicle speed). That will give you the dynamic turning center, From there you can calculate actual TCD. [If I remember correctly the formula is given in this book:-

https://link.springer.com/book/10.1007/978-3-319-05449-0

]. Or You can plot understeer gradient that will give you an idea what is the actual path.

Thanks
Alok

 

[John.B]

I was thinking of creating two markers one in the ground and other on C.G and create a request to get the distance between two.

Thanks
John

 

[alok_singh]

I think in CRC test distance between those two marker won't change(educated guess). Its better to measure the yaw angle. Can I ask why you are measuring paths in CRC test?

Thanks
Alok

 

[GregLocock]

You certainly can measure the path of the CG, although that in itself is interesting due to roll, and you can of course plot the ideal path.

I misspoke, i was thinking about SmartDriver, you'll be using the Driving Machine as described in the Getting Started guide. I'm pretty sure there are requests to interrogate the DM.

Cheers

Greg Locock


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[John.B]

Hi Alok, I'm measuring paths to calculate deviation. i.e I need to understand when the vehicle is starting to slide away from the target path and at what speed.

 

[John.B]

Hi Greg,
Yes I'm exploring how to create requests to get extract required information.

 

[GregLocock]

I'm not having much luck googling for DM interrogation requests, it might be worth trying the Hexagon support forums.

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

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