What is needed to run the the simulator? Read to get most recent information!
Tips for using the
The simulator: gain.exe
(click to download).
The simulator runs immediately after the download by clicking Open in
the download window.
Alternatively, you can first save a copy of the exe-file on any directory (folder)
on your PC and then run the
exe-file, which starts the simulator.
Description of the simulated system
The simulator simulates a gain having the gain K as its parameter. The
relation between the
input variable, u, and the output variable, y, is:
y(t) = K*u(t)
There is no dynamics (that is, no time-dependent relation) between the
output and the input.
The aims of the simulator is to give insight into the non-dynamic behaviour
of a gain.
Many physical systems are approximately gains, e.g.:
- A control valve where the valve control signal u gives approximately
a proportional valve opening z.
- A tachometer (which is a rotational speed sensor for motors etc.)
produces an output voltage which is approximately proportional to speed.
- A (very quick) motor where the rotational speed is approximately
proportional to the motor control signal.
- The proportional term of a PID-controller, which is proportional to
the control error.
Start the simulator.
- Adjust the gain K to any positive value. Adjust the input signal to
any value. Observe how the output value y varies. Is there any dynamic
relation between the input and the output?
- Repeat Task 1, but with a negative K-value.
Updated 12. January 2008.