Chapter 7
REG – Function blocks for control
The control function blocks form the most extensive sub-library of the RexLib library. Blocks ranging from simple dynamic compensators to several modifications of PID (P, I, PI, PD a PID) controller and some advanced controllers are included. The blocks for control schemes switching and conversion of output signals for various types of actuators can be found in this sub-library. The involved controllers include the PIDGS block, enabling online switching of parameter sets (the so-called gain scheduling), the PIDMA block with built-in moment autotuner, the PIDAT block with built in relay autotuner, the FLCU fuzzy controller or the PSMPC predictive controller, etc.
FLCU – Fuzzy logic controller unit
FRID – Frequency response identification
I3PM – Identification of a three parameter model
LC – Lead compensator
LLC – Lead-lag compensator
LPI – Loop performance index
MCU – Manual control unit
PIDAT – PID controller with relay autotuner
PIDE – PID controller with defined static error
PIDGS – PID controller with gain scheduling
PIDMA – PID controller with moment autotuner
PIDU – PID controller unit
PIDUI – PID controller unit with variable parameters
POUT – Pulse output
PRGM – Setpoint programmer
PSMPC – Pulse-step model predictive controller
PWM – Pulse width modulation
RLY – Relay with hysteresis
SAT – Saturation with variable limits
SC2FA – State controller for 2nd order system with frequency autotuner
SCU – Step controller with position feedback
SCUV – Step controller unit with velocity input
SELU – Controller selector unit
SMHCC – Sliding mode heating/cooling controller
SMHCCA – Sliding mode heating/cooling controller with autotuner
SWU – Switch unit
TSE – Three-state element
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