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| Standalone controller (PID) |
A controller is an instrument used for controlling a process variable (measurement). Its continuously monitors the error signal and gives a corrective output to the final control element.
a measurement variable
desired variable
c deviation
output
Measurement variable: It is the demand variable measured and controlled.
Desired Variable: it is the demand signal (set point) to which the process variable is controlled.
Deviation: it is the error signal caused by the difference between the measurement and the demand signal.
Output: It is the corrective signal from the controller to the final control element.
6 comments
What are the different types of controllers? and List of them?
Pls post instrument question & answer.
Hi there, can u describe what is "Z" mean exmple : 61-ZIT-8001
What exactly is mean
Z is Position
please give correct answer about PID controller and where it is used and Its working principle.
PID controller means Proportional Integral and Derivative controller. The difference between a measured value and set point value can be calculated by a PID controller and it will minimize the error by its manipulated variables.
There are mainly three types of PID Controllers
1.P-controller
2.I-controller
3.D-Controller
and they can also be used by combinations like PI-controller and PD-controller