|
Post by tronicgr on Oct 17, 2014 1:11:04 GMT
On the LCD menu on the AMC1280USB.
|
|
|
Post by stevant on Oct 17, 2014 1:39:15 GMT
Found it all on your AMC board.........what a difference. I can't wait until we get it all correct, especially the arm movements for maximum movement. It is so much smoother now. When we Skype you can fine tune it even more. Flying feels great!!!
Thanks as always,
Steven
|
|
|
Post by stevant on Oct 17, 2014 10:31:01 GMT
I'm hoping my upper platform is ready today, or at least by Sunday. I set the <P> setting to 5 and the i and d to 0. The platform seems to run very smooth that way. As I increase the P, the platform seems to get a little more abrupt in its movement. (I know the steel platform will be much more solid, especially where the arms mount to it.) The downside to the lower P setting is it seems to cut down the range of motion. I know we will fix this when we Skype but I figured explaining it to you would give you a little more info on what's happening. One other thing is that motor number 4 seems to be down well below neutral during normal use when flying. It works fine and moves properly but it seems it's center point is not correct. This is only when using the BFF program with X-plane. During racing sims along with the test function in x-sim it is centered like the rest. Looking forward to Skyping.
Thanks again,
Steven
|
|
|
Post by stevant on Oct 19, 2014 17:31:20 GMT
Hi all,
I figured I would upload a video of my platform in motion. Even though it is not the final upper platform at least you can see what kind of movement I'm getting thus far. I'm flying x-plane and you can see the computer down on the right of the video to track the movement. The platform has not been calibrated yet so the full motion might be greater once its complete. Thanos will assist me once the completed upper platform is installed. I'm running the motors at 100%, my P at 9, I at 1 and D at 0. Oversample is at 4% I'm sure its not all correct but it seems to be much smoother than at first. Looking forward to Skyping with Thanos once complete to calibrate.
|
|
|
Post by tronicgr on Oct 20, 2014 4:10:36 GMT
Looks good Steven! Great range of motion and really smooth as well!
From the video I see it needs higher P (perhaps 18 or 22) and I'll need to find for you the setting for the PWM frequency of the vfd‘s to set it in 10kHz or more so it wont be so audible (whining noise)
Thanos
|
|
|
Post by stevant on Oct 20, 2014 10:21:28 GMT
Thank you Thanos.......trying to do as much as I can so I don't have to take up too much of your time. I am learning a lot by trying to do it myself. Thanks for your support. I'll change my P to 18 and see how it goes. If you can tell me where to find the PWM frequency that would be great. That would make my wife very happy.......lol!!!
Talk to you soon.....
|
|
|
Post by stevant on Oct 20, 2014 12:15:27 GMT
When I raise the P value the platform becomes very jumpy. I can assume some of that is from the wooden platform and it's mounting points which are strong but not as solid once welded. I see the jitter there not in the motor arms where I thought it was also coming from. I guess we can address that once I mount the new platform. I will admit at a P value of 18 the platform is more sensitive and it reacts better to Xplane. It has it smooth moments but when the motion gets abrupt it shakes. I might go back to my tighter HEIM joints if maybe that's the case but that will be my last option since I think they were binding too much. Many variables to consider. One step at a time.
Could the external brake be causing the motors to be a little jumpy???
|
|
|
Post by stevant on Oct 20, 2014 14:51:39 GMT
Ok, I just realized that I never turned on the external braking in my inverters for my resistors. Under B090, Dynamic braking usage ratio, it is currently set for 0.0% I'm going to set it at 50% to start. Not sure if that's going to help but we have to try. That will activate the regenerative braking resistor. My B083, Carrier Frequency, we had set at 12. It could go to 15. This is where we set the PWM carrier(Internal switching frequency). I assume this is where we can try to go a little more to reduce the squeel?
|
|
|
Post by tronicgr on Oct 20, 2014 22:59:37 GMT
stevantYes the PWM carrier. Make it as high as you can so you don't hear or minimize as possible the squeal noises. You don't want this to happen wife with nervous breakdown
|
|
|
Post by stevant on Oct 20, 2014 23:17:41 GMT
Lol.......
|
|
|
Post by stevant on Oct 23, 2014 23:13:03 GMT
Take a look at the amount of movement in the platform with me just moving it by hand. There is a lot of play in the gearboxes causing the movement. You will also see how it vibrates and shakes when I put it through it's movements when testing on x-sim. Maybe the upper platform is not heavy enough but it still does it with me on top. Just want to make sure that this is something that can be adjusted as I'm a little concerned after all this work.
Thanks......
|
|
|
Post by tronicgr on Oct 24, 2014 0:01:37 GMT
Hi Steven, Try reducing the on-line and off-line speed more. It looks like its very fast to me on the video. I remember when I was trying Richards platform (a year an a half ago now), I had to reduce the speed 50% as his gearboxes were too fast. Slowing it down a little bit will make the vibration go away or minimized as well. Also, did you disable the LCD screen updates while you are testing the motors? DIP Switch 1 as in the end of this video: www.youtube.com/watch?v=qc_SIUJ796UFor the backlash you may try something like Vicpopo did on this platform, with tension strings to keep the platform from free falling during downwards motion and keep the backlash to minimum: www.youtube.com/watch?v=JwrDSTO61uEThanks Thanos
|
|
|
Post by stevant on Oct 24, 2014 0:05:12 GMT
Ok.......I will do. I did not disable the LCD screen. I will watch the video now. The rest we can address when we Skype. Thanks as always. Any more ideas until then, please let me know!! :-)
|
|
|
Post by stevant on Oct 24, 2014 0:17:41 GMT
Ok....I pushed my pin down after I made my changes. I noticed your 4th Pin is up...should mine be up? It is down now.
|
|
|
Post by stevant on Oct 24, 2014 0:44:40 GMT
Getting better!!!!
|
|