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Thread: Input-Output Calculations

  1. #11
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    Quote Originally Posted by S2H View Post
    Maybe you could explain in more detail what you are trying to do with these outputs.
    (What are these outputs going to, and what does the other end do when they turn on), and then we could figure out the best method to accomplish this.
    Quote Originally Posted by Danny Cabral View Post
    I'm just guessing here, but it seems he wants the ECU to output +12V based on speed input differentiation. (Like activate a timing retard for traction control.)
    Quote Originally Posted by cbernhardt View Post
    Exactly. I have built a "black box" using an Arduino micro computer that reads a front & rear wheel ABS sensor, and compares the two wheel speeds. Right now, with the carbureted engine, the computer drives an LED light box that displays a green light for no wheel slip, yellow for 5%, blue for 10%, and red for 15% slip or greater. I was considering an EFI system for the engine, and was hoping that the Dominator could replace my box.
    Quote Originally Posted by Danny Cabral View Post
    Also, the new Advanced ICF can plot a 2D Table of two speed Inputs, and the Table Type can be something like Timing Offset.
    Quote Originally Posted by S2H View Post
    It's a great place to do what you're thinking of doing. No external box, no outputs routed back to inputs. Think 2D Table & Timing Offsets.
    Thanks S2H, share your thoughts. I just simulated this with the Holley V4 EFI software (Advanced ICF, 2D Table), and it should work good. Even a 2D Gear Table can be used to only enable it in specific gears. Enable it, Name it Spin Retard or Launch Retard, and select "Timing Offset" as the Table Type. The X axis can be the rear axle VSS, and the Y axis can be the front axle VSS (scaled according to the vehicle's traction loss/speed capabilities). However, filling in the amount of minimal Timing Offset where each row/column cell values intersect, could be a serious amount of trial & error.
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 11.8:1 comp, TFS R-Series intake, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 160A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, M4602G aluminum driveshaft, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

  2. #12

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    OK, remember I do not have a Dominator, just playing with the software. I started by adding the Inputs/Outputs ICF and defined two Inputs named “Front Wheel IN” & “Rear Wheel IN” as IPU SPEED/FREQ. I configured both for RPM, and set the pulses per rotation at 48 (same as my ABS sensors). Set Linked Outputs 1 & 2 named “Front Wheel OUT” & “Rear Wheel OUT” to activate when Inputs 1 & 2 are enabled.

    Added an “Advanced ICF” and selected a “2D Table”. Enabled the table, set the Table Type for “Timing Offset”, and set the X axis to “Rear Wheel IN” and the Y axis to “Front Wheel IN”. Also set the X & Y axes values. Set table Activation when Rear Wheel Out is enabled. I'm assuming the only thing necessary now would be to Pin Map the Inputs from the ABS sensors, right? Or do I also need to Pin Map the Outputs also? Charles

  3. #13
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    Quote Originally Posted by cbernhardt View Post
    I started by adding the Inputs/Outputs ICF and defined two Inputs named “Front Wheel IN” & “Rear Wheel IN” as IPU SPEED/FREQ. I configured both for RPM, and set the pulses per rotation at 48 (same as my ABS sensors).
    Yes, create two speed type Inputs in the Inputs/Outputs ICF.

    Set Linked Outputs 1 & 2 named “Front Wheel OUT” & “Rear Wheel OUT” to activate when Inputs 1 & 2 are enabled.
    No Linked Outputs are required. The 2D Table in the Advanced ICF is performing the user programmed timing retard.

    Added an “Advanced ICF” and selected a “2D Table”. Enabled the table, set the Table Type for “Timing Offset”, and set the X axis to “Rear Wheel IN” and the Y axis to “Front Wheel IN”. Also set the X & Y axes values.
    Yes, enable & setup a 2D Table in the Advanced ICF.

    Set table Activation when Rear Wheel Out is enabled.
    Output from I/O ICF?
    If you want to enable a Switched Activation, create a 3rd Input (name it something like "Spin Retard On"), and Pin Map it to an available Input.

    I'm assuming the only thing necessary now would be to Pin Map the Inputs from the ABS sensors, right?
    Correct: http://forums.holley.com/showthread....8389#post58389 (How To Create A Custom Input/Output)

    Or do I also need to Pin Map the Outputs also?
    No Outputs are required.
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 11.8:1 comp, TFS R-Series intake, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 160A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, M4602G aluminum driveshaft, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

  4. #14

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    Right. You performed one too many steps in your example above (post #12). Two Inputs is all that's required to perform the function you're after. In real life, those would need to be calibrated together and a datalog overlaid. They should have a linear function across the map (without slip). You could create a Switched Input or use the Advanced Enable (something like TPS above X) to "Activate" this table in the Advanced setting.

  5. #15
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    You can use Outputs to create some very complex slip calculations
    & slopes of taking out timing and putting timing back in (like I do).
    But it's more than just a simple 2 axis calculation.
    I'm three 2D Tables and several extra outputs routed back into inputs, with multiple PWM tables.
    Plus a lot of time & testing, so I won't be sharing any of my secrets...LOL!
    But that's the awesome power of the "Advanced ICF".
    -Scott
    Don't forget to check out progress on my Race Car:
    Project Blasphemy - 8.07 @ 171
    Low 8 Second Street Car

  6. #16

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    Quote Originally Posted by Danny Cabral View Post
    I don't understand what the Linked Outputs are for. The 2D Table in the Advanced ICF is performing the user programmed timing retard.
    If you want to enable a Switched Activation, create a 3rd Input (name it something like "Spin Retard On"), and Pin Map it to an available Input. Output from I/O ICF?
    When I setup the table, under activation I checked "Switched Enable". Then under "This table will activate when" the only options were the outputs I had created - "Rear Wheel OUT" and "Front Wheel OUT". Without a Switched activation, is it normally activated all the time? One other question. When the software is connected to the controller, will I be able to see which cell in the Timing Offset table is active?
    Last edited by cbernhardt; 12-26-2015 at 03:45 PM. Reason: added question

  7. #17
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    Quote Originally Posted by cbernhardt View Post
    When I setup the table, under activation I checked "Switched Enable". Then under "This table will activate when" the only options were the outputs I had created - "Rear Wheel OUT" and "Front Wheel OUT".
    If you want to enable a Switched Activation, create a 3rd Input (name it something like "Spin Retard On"), and Pin Map it to an available Input.
    Or as mentioned by 64duece (post #14), you can enable an Advanced Activation by something such as TPS above a user specified percentage.

    Without a Switched Activation, is it normally activated all the time?
    Yes. Without a "Switched Enable" or "Advanced Enable", the Advanced ICF Table is always active.

    When the software is connected to the controller, will I be able to see which cell in the Timing Offset table is active?
    Yes. When your laptop is "Online" with the ECU, the live cursor is displayed in real time (on the current cell).
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 11.8:1 comp, TFS R-Series intake, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 160A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, M4602G aluminum driveshaft, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

  8. #18

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    OK. I built a Timing Offset 2D Table that has the X axis as the input from the rear wheel ABS sensor, and the Y axis as the input from the front wheel ABS sensor. Looks like that should work like I want. Other than observing the 2D Table, is there another way to observe the input from the ABS sensors, perhaps a custom gauge (if that is possible)?

    The ABS sensors on my car, are from a '94 Corvette and are the passive type which do not generate much voltage, less that 0.05 volt at low wheel speeds. The minimum voltage for an IPU Speed/Frequency Input can be set to 0V, but will the frequency be able to be read accurately by the Holley software at that low voltage? Charles

  9. #19
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    Quote Originally Posted by cbernhardt View Post
    Other than observing the 2D Table, is there another way to observe the input from the ABS sensors, perhaps a custom gauge (if that is possible)?
    Yes. It can be displayed on the Data Monitor, Data Logger & Gauge Panel.

    The Data Monitor & Datalogger need to be edited (click "E" in top left corner) for the Data/Log Views you want displayed.
    "Click, drag & drop" the custom channels over to the Data/Log View lists. Scroll to the right to select the custom created channels.
    http://forums.holley.com/showthread....s-amp-Datalogs (Datalogging Information)

    The Gauge Panel is very intuitive (self-explanatory) once you start using it.
    http://documents.holley.com/techlibr...r10632rev5.pdf (Read Section 20 - Gauge Panel, Page 20)

    The ABS sensors on my car, are from a '94 Corvette and are the passive type which do not generate much voltage, less that 0.05 volt at low wheel speeds. The minimum voltage for an IPU Speed/Frequency Input can be set to 0V, but will the frequency be able to be read accurately by the Holley software at that low voltage?
    You'll soon find out.
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 11.8:1 comp, TFS R-Series intake, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 160A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, M4602G aluminum driveshaft, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

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