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**Topic under **Control Mode

**Source:** www.control.lth.se

**File size:** **102.33 KB**

**File type:** **pdf**

**Last download on:**
Thu Apr 12, 2018 01:54:59 AM

__Short Desciption__:

Abstract: A simple event-based PID controller is presented. It is shown that it
is possible to obtain large reductions in CPU utilization with only minor control
performance degradation. Simulations on a double-tank process are presented.
Keywords: PID control, computer control, event-based sampling

__Summary__:

A simple event-based PID controller has been presented.
It has been shown through simulations that
it is possible to obtain large reductions in the CPU utilization
with only minor control performance degradation.
It has also been shown that it is important
to take the varying sampling interval into account
in the control algorithm. The proposed controller has
also been tested on a laboratory tank process with
good results.
A problem with event-based control is that it becomes
harder to verify and guarantee worst-case performance
using, e.g., available scheduling theory, and
that it is difficult to analyze the control system.
Hence, there is a strong need for both a system theory
for event-based control and for new results in scheduling.

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"A SIMPLE EVENT-BASED PID CONTROLLER"

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