![background image](http://html1.mh-extra.com/html/national-instruments/ni-edids-2400-series/ni-edids-2400-series_user-manual_3427881219.webp)
NI EDIDS-2400 Series User Manual | © National Instruments | 219
4.17 Auxiliary PID Controller Setup Window
The purpose of the Auxiliary PID Controller Setup window is for configuring up to eight general purpose Proportional-
Integral-Derivative (PID) controller functions for commanding a variety of Flex Control Parameters. The purpose of
a PID controller is to manipulate a final output parameter in such a way that the error between the PID setpoint and
the process variable is zero. The process variable for each PID controller can be sourced from a variety of inputs
to the system. The setpoint for each PID controller can be entered manually or overwritten by
. Each PID controller has proportional gain, integral time, and derivative time for specifying PID
output behavior. The PID controller function output is added to a Feed-Forward parameter to produce a final output
value to be mapped to a Flex Control Parameter. The Feed-Forward can be entered manually or overwritten by
lookup table outputs or operating points. While PID operation is enabled, the final output value can be overridden
by a manual entry for debug purposes. Each PID controller can be monitored within a dedicated plot window to
assist with PID tuning. This document does not discuss the detailed theory of PID control. However, the general PID
equation used for PID control within this system is according to:
Where:
PV = Process Variable
e(t) = Error (Setpoint – Process Variable) as a function of time
Kc = Proportional gain
Ti = Integral time constant
Td = Derivative time constant
= Integral of error as a function of time
There are many internet articles and books available covering PID control theory. One recommended internet
resource for PID control theory is at
http://www.ni.com/white-paper/3782/en
. The core of the DI Driver System PID
control function is very similar to the LabVIEW code described in the above recommended article. This document
assumes that the reader understands the purpose of PID setpoints, CalPoints, and gains.
AuxPIDX_EnablePID
Summary of Contents for NI EDIDS-2400 Series
Page 2: ...2 ni com NI EDIDS 2400 Series User Manual...
Page 13: ...NI EDIDS 2400 Series User Manual National Instruments 13 3 2 Software...
Page 35: ...NI EDIDS 2400 Series User Manual National Instruments 35...
Page 43: ...NI EDIDS 2400 Series User Manual National Instruments 43 3 3 Hardware...
Page 48: ...48 ni com NI EDIDS 2400 Series User Manual 3 3 3 Connecting Injectors Sensors and Actuators...
Page 60: ...60 ni com NI EDIDS 2400 Series User Manual 3 3 5 b Side View of Optional Enclosure...
Page 86: ...86 ni com NI EDIDS 2400 Series User Manual See descriptions for PFI 1...
Page 241: ...NI EDIDS 2400 Series User Manual National Instruments 241 Aux PWX 2 4 See above descriptions...
Page 254: ...254 ni com NI EDIDS 2400 Series User Manual...
Page 268: ...268 ni com NI EDIDS 2400 Series User Manual...
Page 271: ...NI EDIDS 2400 Series User Manual National Instruments 271...
Page 294: ...294 ni com NI EDIDS 2400 Series User Manual...
Page 306: ...306 ni com NI EDIDS 2400 Series User Manual 22 TDK to cRIO Remote Connection...
Page 308: ...308 ni com NI EDIDS 2400 Series User Manual 8 Important Information...