2DOF Wiper Sim from Interview 2010

Re: 2DOF Wiper Motion Projekt Protocol by Interview 2010

how about the best

could you maybe explain it to me or draw?

thank you

Re: 2DOF Wiper Motion Projekt Protocol by Interview 2010

I am now not sure whether the distance from my windshield wiper motor is ok.




I try to set it as good as possible so it pretty jerky when I drive.

Re: 2DOF Wiper Motion Projekt Protocol by Interview 2010

Interview, If I were you, I wouldn’t be too much worried about the distance you are refering in your picture. When I designed my sim, I did comparison with several different motor positions, both in longitudinal direction (the distance in your picture) and in width (view from behind simulator). I ended up putting motors farther than the actuator rods’ upper points. Picture tells better what I mean. Reason for that was it provided the same lean angle in both roll and pitch. And of course the distance in width affected in results: closer the motors and acuator rods' upper points to center of sim, more max angle during roll.
Would some other arrengement offer the same results, maybe. I was satisfied with the result so didn’t do much further comparison. And is it the best situation to have max angles similar, I don’t know, maybe someone else refers another setup?
What Frakk means by 90 degree angle is shown in the picture. When yout sim is in the center position, you have to have it that way to get the same amount of max angle in both directions.
And about the distance, there are different motor distances/angles seen in the forum, so it wouldn’t be a bad idea to have it adjustable? Then also actuator rods should have more adjustment than usually necessary, as different motor position affects in actuators’ correct distance. If you want to have adjustability to max angles both in pitch and roll, drill some holes to motor torque arm, like in the picture.
I remember there was a good topic about placing SCN5s in sim, and how does the position affect the stress in SCN5. My opinion is that those rules doesn’t apply to wiper motors, as they have torque arm giving it’s own influence in both angle generated and stress on the motor. If someone disagrees, please let know as (even) I can be wrong
I hope I didn’t mess up your head too much with the subject

Re: 2DOF Wiper Motion Projekt Protocol by Interview 2010

wow thank you explained very nicely!

would it work for me when I notice the 90 degree and parallel



I've got a good tip from SATO!

I think he can make it so ... now I'm not sure if this is better ..

maybe you can help me further?

thank you


picturens from SATO!!
.---------------------------------

Re: 2DOF Wiper Motion Projekt Protocol by Interview 2010

i agree with SATO, I see no benefits in additional T-support if long actuators aren't used. It's lighter and more rigid structure with SATO's design. In my case I used T-support in case I want to change wiper motors to SCN5s in the future and use the same upper frame.
After exploring my old files, I found results of the different motor locations. To be more clear of the terms, lets call actuator rod's lower pivot point (motor) pivot1 and actuator rod's upper pivot point (attached to seat frame) pivot2.

X-direction (sideview, as in my first pic)
Moving pivot1 away from the seat (behind the seat) decreases pitch angles, doesn't have much influence roll angle.
Vice versa, moving pivot1 closer to driver, more pitch angle, not much effect in roll (as I have placed it in my sim).
These tests assume nothing else is changes: width of the pivot1 and pivot2 stays the same, as the height.
As previously mentioned, increasing pivot1 and 2 width, you get more roll. Finally, the lenght of the torque arm (=servo arm) affects them both, longer the arm, more max roll and pitch. Side affect is of course increased load on motor.
As I look my excel notes, if I had placed my pivot1 40cm more behind the seat compared to its current location, I would have had only 55% angle in pitch compared to roll! Of course this kind of bad roll vs pitch ratio could be solved by increasing pivot1 and pivot2 width.
So I have to take back my words, as I previously said that you don't have to worry about the place of the motor! It really matters a lot! As I don't know your sim width, location of the U-joint under the seat, and all the stuff affecting these kinematics, best advice is to try different locations. And make it adjustable! :thbup:
And for that other picture in your post, I don't quite understand it. :?

Re: 2DOF Wiper Motion Projekt Protocol by Interview 2010

thank you...

I will continue my work

next time more pictures..

Re: 2DOF Wiper Motion Projekt Protocol by Interview 2010



I know not ... but I think the distance is too small

Re: 2DOF Wiper Motion Projekt Protocol by Interview 2010

At such sizes, you can set a motors like this.

The distance between the motors 500 mm.
Distance from kardan, to the engine 410 mm.
I think that this arrangement is also good.
Or move the location of motors in the front of the simulator.



See how motors installed in the simulator by ua6aak

Re: 2DOF Wiper Motion Projekt Protocol by Interview 2010

@ Interview
Vielen Dank nochmal für die Einkaufslisten,Bestellung ist soeben rausgegangen. ;D
Was ich noch fragen wollte :

1: Wo bekomme ich so ein Kreuzgelenk,hast Du da einen Link oder Adresse?
2: Sollen die Wischermotoren vom Golf 30w oder 40w haben?

Vielen Dank

Re: 2DOF Wiper Motion Projekt Protocol by Interview 2010

Such mal bei ebay.co.uk nach land rover universal joint. Kostet inkl. Lieferung (Zollfrei aus UK) um die 16-17 Euro.

Re: 2DOF Wiper Motion Projekt Protocol by Interview 2010

Danke für den heißen Tipp!

Re: 2DOF Wiper Motion Projekt Protocol by Interview 2010

http://cgi.ebay.de/ws/eBayISAPI.dll?Vie ... 712wt_1139

hier ist der kardan

Re: 2DOF Wiper Motion Projekt Protocol by Interview 2010

How are the rods that run sits the move?

red or green?

what is better ..? I prefer fast movement .. + little effort!

Re: 2DOF Wiper Motion Projekt Protocol by Interview 2010

Hey
This is my first post and i come from slovenia so sory for my poor language.
I wonder if anybody have time to help mi find electronic parts for sim. in this store:http://www.conrad.si/

Thanks.

Re: 2DOF Wiper Motion Projekt Protocol by Interview 2010

you read the first post?

http://www.reichelt.de is good to!

Re: 2DOF Wiper Motion Projekt Protocol by Interview 2010

Yes but i can't order to slovenia.

Re: 2DOF Wiper Motion Projekt Protocol by Interview 2010

hmm try that

Take the shopping list of reichelt and send it to Conrad. and hope that they can find it all for you!

Re: 2DOF Wiper Motion Projekt Protocol by Interview 2010

I try to found by my self and if i dont know somethink i will ask?

Re: 2DOF Wiper Motion Projekt Protocol by Interview 2010

yes no problem!

Re: 2DOF Wiper Motion Projekt Protocol by Interview 2010

What do you think about this conector?
http://www.mimovrste.com/artikel/245001 ... 9#pictures
Will this setup run good with 1 PC?

Thanks.