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k fuku

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Posts posted by k fuku

  1. Engine Load

    in G4x

    Posted

    Engine Load
    What is the value this item is calculated based on?

    When I check the logs, I always see a number that is very close to the MAP.
    I don't really understand what I should be using this item for, so I would like your advice.

  3. ECUMaster GPStoCAN Module

    in G4x

    Posted

    M5 ATOM GPS is used to stream GPS signals to CAN.

    https://shop.m5stack.com/products/atom-gps-kit-m8030-kt

    The GPS is running on an original program created in blockly format.
    I can't seem to handle 32bit with LINK, so I use ECU MASTER's meter to receive the GPS signal.


    One idea I came up with is to make the program learn to separate data every 2beyt (16bit).
    (GPS to CAN in ECU master can only send 32bit)

    For example, 0 and 1 byte for ID 401 
    For example, 0 and 1 byte for ID 401, 2 and 3 bytes for ID 402, etc.

    I haven't come up with a way to combine the data after receiving it.

    　(program)
    https://github.com/gok555/M5stack-OBD-CANgauge/blob/main/GPStoCANspeed2HzEspNow.m5f

  8. Appearance of hardware block error after changing to G4X firm 6.24.369

    in G4x

    Posted

    Appearance of hardware block error after changing to G4X firm 6.24.369

    After changing from 6.23.15 to the above new firm, hardware block 2 and 3 appeared in the log check.

    The error did not appear at all in the previous firm, and it seems that the error clearly occurs in the new firm.

    No data or harness at all.
    No changes have been made to the data or harness, only the firmware upgrade.

    https://drive.google.com/file/d/1Sv07-gwyyr79kSUU8zK70ETsNJggBR3d/view?usp=drivesdk

  9. About WRX V11 TGV Control.

    in G4x

    Posted

    About WRX V11 TGV Control.

    The TGV is still installed but I would like to use the analog input of the TGV position sensor for other purposes.

    If I leave the TGV AUX 7/8 in place but delete the analog input values, will the TGV control be disabled?

    If I leave them open, should I set AUX 7 high and AUX 8 low?

  10. What is the possibility of incorporating chat GPT into PC LINK for auto-tuning?

    in WishList

    Posted

    10 hours ago, Confused said:

    What benefit do you think a written language learning algorithm has when applied to engine tuning?

    What could this give over the existing functionality such as Quick Tune, Mixture Map, Long Term Closed Loop Lambda Trims?

    What other features and enhancements do you want to not get?

     

    I'm not trying to be difficult, but I'm not immediately sure how this feature could be implemented in a useful way - hopefully you can make some suggestions! :) 

    https://www.hptuners.com/products/neuralnetworktrainer/

    1) The first is a function that automatically learns fuel and ignition adjustments based on driving logs, as in the example described above.


    Next, the AI will adjust the car according to the driver's preference, for example, focusing on low-speed torque, fuel efficiency, or the ideal torque curve.


    (3) Construction of GP PWM.　　　


    (4) Construct OEM and CAN-BUS analysis streams.
    　
    　
    (5) Advice and assistance on GP PWM customization, etc., in natural language.


    (6) Assist with initial settings of triggers, etc.


    We believe that if the current functionality of the chat GPT can be learned, it would not be surprising if manufacturers other than LINK release the above functionality in the near future through language interaction.


    We would be happy if they would consider supporting this as a future direction.

  14. When ECU hold power is enabled and IG is turned off, the AUX duty controlled equipment goes out of control.

    in G4x

    Posted

    When ECU hold power is enabled and IG is turned off, the AUX duty controlled equipment goes out of control.

    Hold power time is set to 3 equal.

    After IG is turned off, the devices controlled by the CAN connection malfunction only during the three seconds that the LINK ECU is shut down.

    Is there any countermeasure?

    I am thinking that it is probably the same if I control the chassis power supply with a power relay for the equipment that goes out of control.

     

     

  15. Air conditioner control Additional functions

    in WishList

    Posted

    Air conditioner control Additional functions

    It would be helpful if there was a default table for adjusting throttle position, idle RPM, and air conditioner offset values due to AC pressure fluctuations and outside air temperature.

    Currently, the throttle position and target idle rpm are changed by pressure fluctuation using a formula block.
     

  16. Possibility of Controlling Electric Power Steering by PDM

    in Razor PDM

    Posted

    21 hours ago, Mitchell said:

    PDMLink was initially intended to support Windows 7 but due to incompatibilities and the outdated nature of Windows 7, PDMLink doesn't support Windows 7.

    You can find an online version of the PDMLink help manual at: User Manual | LinkECU Documentation Centre (link-user-wiki.herokuapp.com)

    When using an output in H-Bridge mode, the current is running in series through each pin so the current capacity is the same as a single high power output.

     

    A way to ensure the current limit isn't exceeded is to limit the range of duty cycle in the H-Bridge. This shouldn't limit the range of motion of the motor but would reduce the torque slightly at the end stops.

    It was mentioned that windows 7 will be supported in the future at the software download location, but is there any plan to support it?

    Thank you for the PDM manual.
    I will test the 25A limited operation with another H-bridge model and then think about installing RAZOR.

     

     

  17. Possibility of Controlling Electric Power Steering by PDM

    in Razor PDM

    Posted

    5 hours ago, mapper said:

    Here is what the manual says. From my expierence the full 33 amps are reached only for a very short time, so the Razor PDM might handle it fine. On top you can define Inrush current and safety trip time.  The hardware is very capable, so I guess it will handle it just fine. 


    Outputs

    High Power

    There are 4x high power outputs with a maximum safe inrush current of 80A and a continuous current limit of 25A at 12V.

    While the maximum safe inrush current is 80A, the maximum measurable current is 60A.

    The high power outputs each share two pins of the 26-pin super seal connector.

    They can be used as high-side or low-side drivers, have a max frequency of 10kHz, and can be configured as 4 x half bridges or 2 x full bridges allowing control of devices such as e-wastegates. 

    When in full bridge mode, Output 1 is paired with Output 2 and Output 3 is paired with Output 4.  

    Outputs can be joined together to allow the use of higher current devices.

    Is it correct to recognize 25A x 2 when H-bridge is used in parallel?

    If so, it is possible.

    I would like to check the help for RAZOR PDM, but the software does not start because of windows 7 and I had to give up.
    Thank you very much.

  18. Possibility of Controlling Electric Power Steering by PDM

    in Razor PDM

    Posted

    On 3/6/2023 at 5:46 AM, Mitchell said:

    The Razor PDM doesn't currently support parallel H-bridge.

    When driving a motor using H-bridge the maximum continuous current is 25A, however the current can peak higher for a limited time.

     

    Is the 33A rating the stall current or rated current of the motor? If so, the normal driving current is normally lower than the stall current so the Razor PDM should be able to drive the motor. 

     

    Thanks for the information. I guess the parallel connection was not possible.
    33A is the maximum load when lock to lock.

    I am sorry to hear that, but I will consider using other PDMs for control.

  19. G5

    in WishList

    Posted

    On 3/3/2023 at 12:33 PM, Adamw said:

    A G5 plug-in board is in development but its main intent, at least initially, will be for any future GDI plug-in applications.  All the existing plug-in ECU's will remain as G4X for the foreseeable future.  G4X and G5 use very similar firmware so G4X will continue to be developed and G4X will continue to get most new software functionality that the G5 gets, with the exception of GDI stuff and possibly a couple of others related to hardware such as GPS. 

    What are the new features being added to G5?
    Can they be announced yet?

  20. Possibility of Controlling Electric Power Steering by PDM

    in Razor PDM

    Posted

    On 2/28/2023 at 1:45 PM, Biased Opinion said:

    Just a quick look at various electric power steering solutions would suggest that the amperage required is far above what any single output on the razor PDM could supply. Maybe an ECU controlled solid state relay might be a better solution. Would certainly be alot cheaper than the razor

    We would like to mount the electric power steering system for mini cars manufactured by Daihatsu, a Japanese manufacturer
    It requires a maximum of 33A and the ECU master H-bridge will meet the voltage requirements, but we are unable to set up the detailed operation.
    If possible, RAZR PDM would be ideal.
     

    On 3/2/2023 at 6:10 AM, mapper said:

    You can use several outputs in parallel to get more current. 

    What is the maximum amperage that link's PDM can use in parallel connection?

    One 25A, two in parallel can be 50A?


     

  23. Electric power steering control with LINK ECU using h-bridge devices

    in G4x

    Posted

    54 minutes ago, k fuku said:

    The main and sub steering torque sensors seem to display opposite voltages respectively.
    I wrote them out as duty values in a 3D table.

    I also wrote down the duty values from 0 to 100 in a mass block.
    -4095 to 0 to 4095
     I need to convert the duty values from 0 to 100 to -4095 to 0 to 4095 in the mass block.

    Screenshot_2023-02-27-15-27-42-84.jpg

    Screenshot_2023-02-27-15-28-43-55.jpg

    Left rotation when analog voltage2(a) is greater than 2.6
    a<2.6(41*c)

    Analog voltage 1 (b) is greater than 2.6 and rotates right　
    b<2.6(-41*c)

    c=PWM duty


    a<2.6(41*c) b<2.6(-41*c)
    I'm not sure if this is an equation that works correctly, but I can't enter it into the equation due to the number of characters.

  24. Electric power steering control with LINK ECU using h-bridge devices

    in G4x

    Posted

    On 2/25/2023 at 8:14 PM, Adamw said:

    So do you want 0 output between 49.1-50.9%?  or only 0 output between 49.9 & 50.1%?

    The main and sub steering torque sensors seem to display opposite voltages respectively.
    I wrote them out as duty values in a 3D table.

    I also wrote down the duty values from 0 to 100 in a mass block.
    -4095 to 0 to 4095
     I need to convert the duty values from 0 to 100 to -4095 to 0 to 4095 in the mass block.

    Screenshot_2023-02-27-15-27-42-84.jpg

    Screenshot_2023-02-27-15-28-43-55.jpg

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