Table 2 The Time- domain parameter Identification based on graphical method [ [26]]
From: Functional-thermoregulatory model for the differential diagnosis of psoriatic arthritis
Symbol | Parameter name | Calculation description |
|---|---|---|
K | Process gain* | Process gain is determined by dividing the steady state output (t → ∞) |
(assumed to be the final output value of y(t)) by the input set point value (T). | ||
LT | Lag time | The lag time or dead time is the time interval between the input being applied to the system |
and the output responding to this signal. The time delay from the onset | ||
of the re-warming process and the end of the isometric exercise is often | ||
referred to as lag time (LT) [6]. | ||
a | Open loop pole location | It is the inverse of system time constant. |
The system time constant is the time taken for the output | ||
to reach 63% of the final value. |