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3DOF - C1500´s first Sim Seat

Discussion in 'DIY Motion Simulator Projects' started by C1500, Nov 22, 2018.

  1. C1500

    C1500 Active Member

    Joined:
    Nov 19, 2018
    Messages:
    165
    Location:
    Germany
    Balance:
    1,117Coins
    Ratings:
    +86 / 1 / -0
    My Motion Simulator:
    AC motor, 6DOF
    Hi

    The problem with the wheel is solved.
    1. my STM32 DISCO KIT is dead. No idea how i made it, but >2A current is definitely to much for the F408 *lol* a new smaller kit cost me only 12€ and thanks to @Hoantv i can use the internal DAC
    2. I had to calibrate Pn190
    here is a good description: https://github.com/hoantv/CarSimula...Drive-Parameter-Configuration-and-Calibration

    More will come later.
    @all: STAY HEALTHY !
    • Like Like x 2
  2. C1500

    C1500 Active Member

    Joined:
    Nov 19, 2018
    Messages:
    165
    Location:
    Germany
    Balance:
    1,117Coins
    Ratings:
    +86 / 1 / -0
    My Motion Simulator:
    AC motor, 6DOF
    Hi Folks

    Maybe you have seen my FS2 Test disaster.
    So i am still in debug mode ;)

    After printing the broken parts the printer is still busy.
    I want to get rid of the EMI sound.
    so this is what i made:

    This was the initial situation:
    vorher.jpg
    Only one EMI filter in the left top corner

    So Amazon delivered this:
    IMG_20210502_135714.jpg
    six 25A EMI filters

    And i printed a little bit:
    IMG_20210502_135739.jpg IMG_20210502_135747.jpg IMG_20210502_135805.jpg

    after a major rewire it now looks like this:
    Nachher.jpg

    EMI Test will follow later.

    Regards
    Peer
    • Like Like x 3
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  3. Thanos

    Thanos Building the Future one AC Servo at a time... or 6

    Joined:
    Jul 6, 2017
    Messages:
    1,346
    Occupation:
    Electronics Engineer
    Location:
    United States
    Balance:
    2,693Coins
    Ratings:
    +1,043 / 9 / -0
    My Motion Simulator:
    AC motor, Motion platform, 4DOF, 6DOF
    Where?
  4. C1500

    C1500 Active Member

    Joined:
    Nov 19, 2018
    Messages:
    165
    Location:
    Germany
    Balance:
    1,117Coins
    Ratings:
    +86 / 1 / -0
    My Motion Simulator:
    AC motor, 6DOF
  5. dedraro

    dedraro Active Member

    Joined:
    May 1, 2015
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    100
    Location:
    Italy
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    81Coins
    Ratings:
    +65 / 0 / -0
    Do you have a link or a specific name for these filters that you got on amazon? thank you
  6. C1500

    C1500 Active Member

    Joined:
    Nov 19, 2018
    Messages:
    165
    Location:
    Germany
    Balance:
    1,117Coins
    Ratings:
    +86 / 1 / -0
    My Motion Simulator:
    AC motor, 6DOF
    Next step in EMI-Wars

    Every line to the motor gets a ferrit ring for filtering
    NextOne.jpg
    So the first 18 ferrit are assembled ;)

    All power cables to the motor are shielded from the beginning of the project.
    The shield is connected to the coolingplate at the same point as the earth contact of the power-input-line.

    If this does not help, i have no more ideas ;)

    Test and results will follow

    May the EMI force be with me *lol*

    @dedraro I bought this one:
    --https://www.amazon.de/Filterplatine-Hochfrequenz-Zweistufige-Stromversorgung-Tiefpassfilterplatine/dp/B07TQ9PCPF/ref=sr_1_14?__mk_de_DE=%C3%85M%C3%85%C5%BD%C3%95%C3%91&dchild=1&keywords=emi+filter+25a&qid=1620154601&sr=8-14
    • Like Like x 2
    • Funny Funny x 1
    Last edited: May 4, 2021
  7. C1500

    C1500 Active Member

    Joined:
    Nov 19, 2018
    Messages:
    165
    Location:
    Germany
    Balance:
    1,117Coins
    Ratings:
    +86 / 1 / -0
    My Motion Simulator:
    AC motor, 6DOF
    Hi Folks

    Sorry, i forgot the detailed pictures of the ferrit
    Here they come:
    IMG_20210504_190107.jpg IMG_20210504_195258.jpg IMG_20210504_195316.jpg

    An there is a new question.
    What is the worst case position for a 6DOF rig and the front arm for the pedals?
    After my last crash I´m a bit worried about a possible next crash.
    So I wanted to test the maximum.
    Is it right, that it is the worst case, if only one of the motors 3 or 4 (the motors on the back side) are on maximal position, and all other 5 motors are in lowes position?
    I´ve tried to move in this position manually but i cant reach maximum.
    The plate with the pedals get in contact with the aluminium tube just like in last crash.
    it looks like this:
    IMG_20210504_203354.jpg IMG_20210504_203339.jpg

    I will cut the frame on the blue lines and will test it again
    IMG_20210504_203345.jpg

    Then the arm should have enough place to move in the worst case position.
    This should prevent me from the same crash again

    What do you think?

    cheers
    Peer
    • Like Like x 1
  8. Pierre Lalancette

    Pierre Lalancette Sir Lalancelot Gold Contributor

    Joined:
    Dec 11, 2016
    Messages:
    943
    Occupation:
    3D teacher
    Location:
    Quebec, Canada
    Balance:
    7,683Coins
    Ratings:
    +883 / 6 / -0
    My Motion Simulator:
    3DOF, DC motor, Arduino, 6DOF
    You simply reduce your rig movement so it doesn't append again.
    Reduce the range of the actuators.

    Pierre.
  9. C1500

    C1500 Active Member

    Joined:
    Nov 19, 2018
    Messages:
    165
    Location:
    Germany
    Balance:
    1,117Coins
    Ratings:
    +86 / 1 / -0
    My Motion Simulator:
    AC motor, 6DOF
    Sorry Pierre, but:
    NO !
    NO !
    NO !
    That is NO solution !! *lol*

    I had only 22cm complete movement when I made the last pictures.

    So I cut a bit an it looks like this now:
    IMG_20210505_193710.jpg IMG_20210505_193718.jpg
    In this position motor 4 is moved to 39cm and all others are at 0cm
    So I think this is my absolute worst case.
    The software-limit is set to 38cm.

    But now I have to stabilize the pedals because the frame underneath is missing.

    Now i feel a bit saver for the next testruns.

    But sill in debug mode ;)

    cheers
    Peer
  10. Thanos

    Thanos Building the Future one AC Servo at a time... or 6

    Joined:
    Jul 6, 2017
    Messages:
    1,346
    Occupation:
    Electronics Engineer
    Location:
    United States
    Balance:
    2,693Coins
    Ratings:
    +1,043 / 9 / -0
    My Motion Simulator:
    AC motor, Motion platform, 4DOF, 6DOF
    Something is wrong on your geometry. Can you post some photos of the whole platform?

    The cockpit can be recessed in the top triangle, but not too much that the pedals footrest will have change to hit the actuators body...
  11. Pierre Lalancette

    Pierre Lalancette Sir Lalancelot Gold Contributor

    Joined:
    Dec 11, 2016
    Messages:
    943
    Occupation:
    3D teacher
    Location:
    Quebec, Canada
    Balance:
    7,683Coins
    Ratings:
    +883 / 6 / -0
    My Motion Simulator:
    3DOF, DC motor, Arduino, 6DOF
    LOL
  12. C1500

    C1500 Active Member

    Joined:
    Nov 19, 2018
    Messages:
    165
    Location:
    Germany
    Balance:
    1,117Coins
    Ratings:
    +86 / 1 / -0
    My Motion Simulator:
    AC motor, 6DOF
    Hi folks

    After printing the broken parts and reassemble it, I recognized another unknown sound while moving the rig manually.
    The Problem was found really fast. Another broken Part in the left-back actuators.
    IMG_20210603_200404.jpg
    The lower ball-bearing-holder was broker.
    While disassembling the actuators I found also a loosen screw witch normally holds the ball-screw in the ball-bearing.

    Now everything seems OK

    Hi @Thanos

    Here are some pictures of the rig.
    Unfortunately I did not get to clean up yet ;)
    IMG_20210603_201059.jpg IMG_20210603_201036.jpg
    IMG_20210603_200955.jpg IMG_20210603_201122.jpg
    IMG_20210603_201131.jpg IMG_20210603_201138.jpg

    What do you think?
    Is there a big mistake in the geometry?

    Can you please also confirm my settings in AMC:
    Code:
    Number of MOtors
    <1-7axis>: 6axis
    
    Platform Check
    OFF - Normal
    
    Park Position
    <0-100%>:0/5
    
    Standby POS/SPD
    <0-100%>:50/5
    
    Auto-Park Actuat
    >All Axis Normal
    
    Stroke All
    Stroke: 360mm
    
    Landscrew All
    Size:  5mm/rev
    
    Direction All
    Dir:Inline
    
    Ratio All
    Reduction: 1:1
    
    PulseReq:200kHz
    Pulse Filter: 3
    
    Pulse Freq
    0-30:0, 200kHz
    
    Function of KLM
    1. Park/STBY SW
    
    Function of FSW
    2.Park motors
    
    Button Speed
    rate:40
    
    S-ON Pin Level
    Active Low (0v)
    
    Spike Filter
    Level 32512, ON
    
    Spike Filter
    range--> 64770
    
    Spike Filt Level
    ->32512 178.5mm
    
    Spike Filter
    --> Enabled
    
    Spike Filt Speed
    Esc=24, Fine=11
    
    Spike Filt Speed
    Fine Move = 11
    
    Rotation Offset
    Default degrees
    
    AMC-AASD14 v2.11
    Beta:  fix5
    Thanks in advace
    Peer

    Attached Files:

    Last edited: Jun 3, 2021