20-sim webhelp > Library > Signal > Control > PID Control > Continuous > controller use


controller use

Navigation:  Library > Signal > Control > PID Control > Continuous >

controller use

Previous pageReturn to chapter overviewNext page

All controllers must can be used as shown in the figure below. The upper part shows a continuous time controller and the bottom part shows a discrete time controller.

Error Input

1.An error signal is generated with a plus minus element. Its serves as an input of the controller.
2.The controller output is connected with the process input.

ControllerUse1

As shown in the figure, analog to digital convertors and digital to analog convertors should be used, when connecting a discrete-time controller to a continuous-time process.

 

Separate Input

1.A setpoint signal is connected with the SP port of the controller.
2.The process output is connected with the PV port of the controller.
3.The controller output is connected with the process input.

ControllerUse

As shown in the figure, analog to digital convertors and digital to analog convertors should be used, when connecting a discrete-time controller to a continuous-time process.