Filter
Top Products
®
Glossary
60 CNT-APG002-EN
system time constant
The time it takes to reach 63.21% of the difference between the start
point and the end point when controlling an output over a known range.
Used to calculate the sampling frequency. Using
2
/
3
(66%) rather than
63.21% provides a good approximation of the system time constant.
throttling range
For an HVAC controller, the range of input that drives the output from
the minimum output to the maximum output (typically 0% and 100%).
The gains are calculated from the throttling range. See also error, gain.
velocity model
A type of PID control used in Trane controllers to minimize the problem
of integral windup. See also integral windup.
windup
See integral windup.