PID control with properly tuned
PID + Fuzzy control
Warm Up
Load Disturbance
Set
point
Temperature
Time
High Accuracy
This Series controllers are manufactured with custom designed
ASIC(Application Specific Integrated Circuit ) technology which
contains a 18-bit A to D converter for high resolution measurement
( true 0.1 F resolution for thermocouple and PT100 ) and a 15-bit
D to A converter for linear current or voltage control output. The
ASIC technology provides improved operating performance,
low cost, enhanced reliability.
Fast Sampling Rate
The sampling rate of the input A to D converter reaches 5 times/second.
The fast sampling rate allows this series to control fast processes.
Fuzzy Control
The function of Fuzzy control is to adjust PID parameters from time to
time in order to make manipulation output value more flexible and
adaptive to various processes. The results is to enable a process to
reach a predetermined set point in the shortest time, with the minimum
of overshoot and undershoot during power-up or external load
disturbance.
Digital Communication
The units are equipped with RS-485 or RS-232 interface card to
provide digital communication. By using the twisted pair wires there
are at most 247 units can be connected together via RS-485 interface
to a host computer.
Figure 1.1
Fuzzy Control
Advantage
5
