Model-Based Design Toolbox (MBDT)中的主题 BMS_Blockset_changes_default_Sample_Time

BMS_Blockset_changes_default_Sample_Time

Narudol-T — Mon, 04 Oct 2021 11:30:27 GMT

Hi NXP Team,

I am testing new BMS blockset for S32K series.

However, I found some problem related to Real-Time Application.

The test was conducted in 3 senarios,

1) Looping send-out canbus 0x00 at 4sec with atomic unit

--- The result shows the canbus send-out periodically correct timing.

2) Looping send-out canbus with BCC headerC included id 0x00 (4sec) & 0x01 (40ms)

--- The result shows the canbus send-out periodically x2 "Twice" slower than setting value at 8sec & 80ms

3) Looping send-out canbus with BCC Blockset id 0x00 (4sec) & 0x01 (40ms)

--- The result shows the canbus send-out periodically x48.5times slower than setting value at 194sec & 1.94sec

This problem affect the rest of simulink programming, especially the Time-Integrator.

Can you help advise what is the main root cause ?
and how to solve this problem.

Looking forward to your advise

Best Regards,

Narudol T.

Re: BMS_Blockset_changes_default_Sample_Time

Narudol-T — Mon, 04 Oct 2021 11:31:13 GMT

Here is the testing program.

Re: BMS_Blockset_changes_default_Sample_Time

mariuslucianand — Thu, 07 Oct 2021 20:17:45 GMT

Hello @Narudol-T

From what you are describing here, looks like you have some subsystems whose execution time takes longer than you expect. Let's start first by having a look at this thread https://community.nxp.com/t5/Model-Based-Design-Toolbox-MBDT/S32k144-Simulation-Time/m-p/1193243 . Here I have responded to some questions related to timing in our toolbox.

The solution here is to use our profiler block and see how long it takes to execute some subsystems. I will try to have a look at your subsystem next week.

Hope this helps,

Marius