How to simulate the Slalom maneuver in A/Car

Hello

I want to simulate the Slalom maneuver (which means driving between the cones located with equal interval).

First, I tried to set up the Sine-Sweep Steer according to Slalom characteristics. I mean, to find correct values of steer frequency and steering angle to ensure model riding with proper lateral displacement (which more than a half of car width, obviously). But the path of the model (when you check it in a postprocessor) doesn't look like as desired to be (in a picture attached). There is an explanation for this issue, I know

So, Sine-Swept Steer maneuver doesn't meet the requirements.

I remember that one day I found a picture of the FVA staying on a road with cones (for slalom maneuver, I suppose). So, there must be a tool to build this road. But I didn't find anything looks like a cone in Obstacles menu in Road Builder.

If you know how to simulate the slalom maneuver, please, tell me about it.

Thank you in advance.

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0 viktor.kulagin over 5 years ago
Well, yes, I forgot to mention that this model is built by ourselves, not from acar_shared database. And also, I didn't mention which conditions I had used for this maneuver (velocity 30 km/h, steering angle 180 deg, initial and maximum frequency 1.042 Hz). But, anyway, this lateral displacement is okay, because in this maneuver steering angle is controlled, not the path or lateral displacement. There is the same issue as, for example, in Single Lane Change maneuver, where you can describe a lane change as 1-step sine signal for steering wheel, and after this signal ends the model doesn't ride in direction parallel to the start. And this is not an issue of a model, but an issue for vehicles at all. The picture attached shows lateral displacement of Testarossa during side-swept steer maneuver (velocity 100 km/h, angle 15 deg, frequency 1 Hz), and the same thing happens there.

Hmm, that's a good idea. Don't know why I didn't think about it.

Yes, it's another good solution, but not so easy to do.

Regarding Cones: probably you are right, but I'd like to have an opinion from MSC guys if they can confirm your suggestion.

Thank you for your help a lot.

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0 viktor.kulagin over 5 years ago
Well, yes, I forgot to mention that this model is built by ourselves, not from acar_shared database. And also, I didn't mention which conditions I had used for this maneuver (velocity 30 km/h, steering angle 180 deg, initial and maximum frequency 1.042 Hz). But, anyway, this lateral displacement is okay, because in this maneuver steering angle is controlled, not the path or lateral displacement. There is the same issue as, for example, in Single Lane Change maneuver, where you can describe a lane change as 1-step sine signal for steering wheel, and after this signal ends the model doesn't ride in direction parallel to the start. And this is not an issue of a model, but an issue for vehicles at all. The picture attached shows lateral displacement of Testarossa during side-swept steer maneuver (velocity 100 km/h, angle 15 deg, frequency 1 Hz), and the same thing happens there.

Hmm, that's a good idea. Don't know why I didn't think about it.

Yes, it's another good solution, but not so easy to do.

Regarding Cones: probably you are right, but I'd like to have an opinion from MSC guys if they can confirm your suggestion.

Thank you for your help a lot.

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