ADAMS CAR / Curve modification / Smoothning

[ichbinpulkit]

Hi there,

I have my lateral accelration plot, using the data [lateral acceleration] I am trying to actuate a rotory actuator.
I am not able to achieve a smooth operation because my curve is not smooth. Moreover I want it to smoothly transition from 0G to the real time G acceleration.
I tried using STEP and SPLINE, but unable to get desired result.. Can someone help me?

Viele Grüße
Pulkit Sharma

 

[GregLocock]

Does this have to be done inside ADAMS during the run? I don't know how that would be done, but you need to either get rid of the glitches by improving your model, or do some sort of data cleanup (low pass filter?) on the data you supply to the actuator. Sorry I have no idea how to do the latter.

Cheers

Greg Locock


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

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[ichbinpulkit]

Exactly,
I did try low pass... But still I am confused. The low pass function is a part of "Controls Toolkit"
I created a state variable, which inputs the lateral acceleration. But I am unable to use this variable for Low-Pass, because here the options are a little bit different, and I thick there could be a slight chance that the control Block thing is designed to use with MAT/SIMULINK (ADAMS Controls), which I am trying to avoid to use.

I have read you quite alot.. not many people can help me, but for sure, you can..

 

[GregLocock]

Not in this case. Have you tried debugging your model to make it run more smoothly? Try using dynamic constant radius instead of static. That sort of glitch in the latacc curve is odd, to say the least.

Cheers

Greg Locock


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

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[ichbinpulkit]

By Debugging, do you mean Solver --> Debugging (EPRINT)?
I am unable to understand the output of that.. Also, I am currently trying to use PID to solve my problem.. It's definitely a big mess, but i am jumping into it..

 

[GregLocock]

No, I mean investigatinghow on earth the latacc can jump by .02g

Cheers

Greg Locock


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

http://eng-tips.com/market.cfm?

 

[ichbinpulkit]

Yeah, i am on it.. Although, I guess it is because of my geometry. the Front suspension is connected with the body with just one point in the center of the chassis.. and that too is a rotary actuator.

Viele Grüße
Pulkit Sharma