Форум АСУ в Україні
http://asu.in.ua/

Disturbance-Rejection vs. Setpoint-Tracking Controllers
http://asu.in.ua/viewtopic.php?f=25&t=627
Сторінка 1 з 1

Автор:  san [ 20 вересня 2014, 19:20 ]
Тема повідомлення:  Disturbance-Rejection vs. Setpoint-Tracking Controllers

Disturbance-Rejection vs. Setpoint-Tracking Controllers
Designing a feedback control loop starts with understanding its objective as well as the process’s behavior.
http://e-ditionsbyfry.com/Olive/ODE/CTL ... w=document
http://www.controleng.com/single-articl ... 326af.html
Цитата:
The principal objective of a feedback controller is typically either disturbance rejection or setpoint tracking. A controller designed to reject disturbances will take action to force the process variable back toward the desired setpoint whenever a disturbance or load on the process causes a deviation.
A car’s cruise controller, for example, will throttle up the engine whenever it detects a drop in the car’s speed during an uphill climb. It will continue working to reject or overcome the extra load on the car until the car is once again moving as fast as the driver originally specified. Disturbance-rejection controllers are best suited for applications where the setpoint is constant and the process variable is required to stay close to it.
In contrast, a setpoint-tracking controller is appropriate when the setpoint is expected to change frequently and the controller is required to raise or lower the process variable accordingly. A luxury car equipped with an automatic temperature controller will track a changing setpoint by adjusting the heater’s output whenever a new driver calls for a new interior temperature.

Зображення

Сторінка 1 з 1 Часовий пояс UTC + 2 годин [ DST ]
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group
http://www.phpbb.com/