8.2. Innovative SMART PID Algorithm
When a high accuracy of the temperature control is required,
one must use the PID algorithm.
The applied innovative SMART PID algorithm is characterized by
an increased accuracy for a widen class range of controlled objects.
The controller tuning of the object consists on the manual setting of the
proportional element value, integration element, differentiation element,
or automatically – by means of the auto-tuning function.
8. CONTROL
8.1. ON-OFF Control
When a high accuracy of temperature control is not required,
especially for objects with a great time constant and small delay, one
can apply the on-off control with hysteresis.
Advantages of this way of control are simplicity and liability, but disad-
vantage are the occurring oscillations, even at small hysteresis values.
Fig. 16. Operation way of the heating output type
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