Trans control release pre-1.0.2 beta3

'Microsquirt' Transmission Control development and support.

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Trans control release pre-1.0.2 beta3

Postby jsmcortina » Sun Oct 08, 2017 7:49 am

Transmission Control pre-1.0.3 beta2 Firmware Released

To announce the pre-1.0.2 beta3 version of the Microsquirt trans code. This has had limited field testing, so proceed with caution.

Changes since the last release
Bug fixes
-

New / changed features
Extend race lockup settings to have more per-gear config.
41TE support disabled.
Add per-gear shift timers.
Rework gear choice, gear shifting and lockup behaviour.
Allow shift and lockup states and timers to be datalogged.
Add BTR option and output pattern code from Jamie Staltari.
Apply new line pressure partway through shift.
Rework testmode to integrate better.
Add on/off lockup mode.
Add low-range options.
Change to use output-shaft speed for shifts and lockup internally.
ini changes from PT to support output-shaft.

Minor / internal
Change to stdint typedefs.
Re-arrange code to use more functions and simplify main()

The zip can be downloaded via:
http://www.msextra.com/downloads/dev/trans/pre-1-0-2-beta3/
I can supply, repair or upgrade Megasquirts in UK. http://www.jamesmurrayengineering.co.uk

My Success story: viewtopic.php?f=104&t=34277
MSEXTRA documentation at: http://www.msextra.com/doc/index.html
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Re: Trans control release pre-1.0.2 beta3

Postby ashford » Mon Oct 09, 2017 7:46 am

much better. i have a few new settings that threw my old tune into stupid mode in a few places, ill sort them out before i comment on it.

what i have observed though is the the wait time for lockup is not being used on a shift, as soon as gear goes from 3 to 4 lockup starts immediately or observing the shorter wait for unlock. ill get the tune sorted better and post a log
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Re: Trans control release pre-1.0.2 beta3

Postby ashford » Tue Oct 10, 2017 7:40 pm

i have noticed a typo in ini or bug. delay before shift is associated with wrong gears. i was making changes in 1s and 2s and not noticing changes in upshift times so i inputted very different numbers in each. for the 1-2 shift it uses 3s and 2-3 shift it uses 4s. same with downshift assuming that
1-2 would use 2s
2-3 3s
3-4 4s
4-3 3s
3-2 2s and
2-1 1s

these were the settings
settinsforshift.png
settinsforshift.png (78.63 KiB) Viewed 142 times


this is the log
shift time test.msl.zip
(310.11 KiB) Downloaded 1 time



it seems to find the lighter thottle and downshift times i will need to enable lock tcc during shift.

tcc lock delay is not observed when doing a 3-4 shift it only seems to be observed during non-shifting engagement.
another thought i have is to use map for tcc engagement threshold as it take about full engine load at low speed to disengage at lower speeds using a setting that works well at higer speeds
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Re: Trans control release pre-1.0.2 beta3

Postby ashford » Thu Oct 12, 2017 8:03 pm

i am pleased with the shifting strategy now(other than the gear delay time association).
i think tcc needs a bit more depth in its tuning.
here is a long log with mixed driving. tcc off during shift in beginning and end, on in the middle. resets should give it away

EDIT: i thought 1meg was limit, will cut it down a bit
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Re: Trans control release pre-1.0.2 beta3

Postby ashford » Thu Oct 12, 2017 8:16 pm

chopped in half
Attachments
2017-10-12_15_mod1.csv.zip
(521.44 KiB) Downloaded 2 times
2017-10-12_15_mod2.csv.zip
(519.23 KiB) Downloaded 1 time
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Re: Trans control release pre-1.0.2 beta3

Postby jsmcortina » Sun Oct 15, 2017 9:26 am

Could you post your MSQ as well please.

James
I can supply, repair or upgrade Megasquirts in UK. http://www.jamesmurrayengineering.co.uk

My Success story: viewtopic.php?f=104&t=34277
MSEXTRA documentation at: http://www.msextra.com/doc/index.html
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Re: Trans control release pre-1.0.2 beta3

Postby ashford » Mon Oct 16, 2017 6:24 am

here it is at the end of the log. this could also be used as a base tune for a 4r70/75w as it is a stock trans. this trans also has an input speed sensor i don't know if it has any useful info or not.
Attachments
CAN1_CurrentTune.msq
(30.33 KiB) Downloaded 1 time
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Re: Trans control release pre-1.0.2 beta3

Postby knightrous » Mon Oct 16, 2017 10:46 pm

Can we please have the Toyota A340E/341E selector circuit updated in the documentation as the currently one has a flaw (outlined here: http://www.msextra.com/forums/viewtopic.php?p=513448#p513448)

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