Q10025 Smooth transitions between measurements
Under control of my PC host software, I need to send positioning commands to my system, allow the position to settle, and then take measurements. If I send a new output level directly to the D-to-A converter channel, this produces a severe jolt, and I can't be sure that the system has settled when I take measurements. Is there a way that I can produce smooth transitions without complicated processing in my PC host application?
You should try the PIDRAMP command. Though it was originally
intended for smoothing the setpoint command levels for a closed loop control system,
this command can also be used to drive an open loop control system directly.
In your processing command, define a PIDRAMP task that
receives command levels directly from your $BinIn host
communication pipe. When it receives a new output level, the
PIDRAMP task expands that into a sequence of levels along a
smooth, timed transition from the previous level to the new one. This can be
used to drive a timed output burst configuration, or delivered directly to
the converter port using a DACOUT processing command. You can
select a transition shape and duration that gives you the best
transition time and settling.
L14413