Re: PID question

hondgm@xxxxxxxxx wrote:
(snip)

On your
next post where you say that "you must allocate several samples to your
desired response time", do you mean that I should be taking an average
of several samples before feeding it into the PID loop?
(snip)

Not at all what I think he meant.

Each sample you take must be used as quickly as possible, to minimize time delay inside your control loop.

I think what he meant was that it takes many cycles of your sample and control algorithm to restore the system to setpoint, after a disturbance, so just because you can sample and cycle your program 100k times per second, don't expect to recover, completely, from a step current error much faster than 10 to 100 sample times (100us to 1000 us), especially with load impedances other than for what the control loop tuning was optimized.
.

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