3 ms·
I found this also interesting. I can see how it simplifies the mathematics to use a fixed time interval. Can anyone experienced comment if 10Hz is very differe
by zbuf 5y ago
I found this also interesting. I can see how it simplifies the mathematics to use a fixed time interval.
Can anyone experienced comment if 10Hz is very different or the same as vehicle control systems such as a modern car?
Also, are these systems fixed or floating point? Fixed time intervals would help keep numerical instability of floats in check (however I'd really hope this is more formally understood for such a safety-critical system.)
- vodou 5y agoI've been working on the engine control unit for trucks. I think the fastest control loops were 100Hz (but that was only a few), fixed time intervals. Then, of course, you have the fuel injection that is controlled by its own processor, independent of the ECU scheduling. Nowadays I work with satellite SW. Most of the control loops are pretty slow. The fastest ones are those controlling gyros and reaction wheels that run in 5 or 10Hz
- jcims 5y agoPID control loops on brushless motor controllers typically operate in the 5kHz-50kHz range.