National Instruments PID Control Toolkit 371685C-01 User Manual page 34

I
Instrument Society of
America (ISA)
integral (control) action
K
K
K
c
L
lag
linearity factor
load disturbance
M
ms
N
noise
© National Instruments Corporation
The organization that sets standards for process control instrumentation in
the United States.
Control action in which the output is proportional to the time integral of the
input. That is, the rate of change of output is proportional to the input.
Process gain.
Controller gain.
A lowpass filter or integrating response with respect to time.
A value, ranging from 0 to 1, used to specify the linearity of a calculation.
A value of 1 indicates a linear operation. A value of 0 indicates a squared
nonlinear operation.
The ability of a controller to compensate for changes in physical
parameters of a controlled process while the setpoint value remains
constant.
Milliseconds.
In process instrumentation, an unwanted component of a signal or variable.
Noise may be expressed in units of the output or in percent of output span.
G-3 LabWindows/CVI PID Control Toolkit User Manual
Glossary