Special Transfer Function
Generates a transfer function model using the PID series algorithm as defined below:
where Kc is the proportional gain,
Ti is the integral time in seconds,
and Td is the derivative time in seconds.
T1 is the High frequency rolloff 1 time (in seconds), which defines the time constant of a first order filter in series with the PID algorithm.
T2 is the High frequency rolloff 2 time (in seconds), which defines the time constant of a first order filter in series with the PID algorithm.
|PID Transfer Function Model||Displays the mathematical expression that defines the PID transfer function model you create.|
|Proportional gain||Represents the proportional gain (Kc) of the controller. The default is 1.|
|Integral time (s)||Specifies the controller parameter (Ti) that adjusts the effect of the error integral term on the controller output.|
|Derivative time (s)||Specifies the controller parameter (Td) that adjusts the effect of the error derivative term on the controller output.|
|High frequency rolloff 1 (s)||Defines the cutoff frequency of a low frequency first order filter. If you place a checkmark in the Derivative time (s) checkbox, the step automatically places a checkmark in the High frequency rolloff 1 (s) checkbox.|
|High frequency rolloff 2 (s)||Defines the cutoff frequency of a second low frequency first order filter.|