TeeJet Technologies DYNAJET IC7 140, Руководство пользователя

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DynaJet® IC7140
www.teejet.com
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A
Gain Preset Number
Each one of up to five (5) gain presets can be selected to establish
different sets of gain combinations.
CAUTION: Always check that the intended preset number is selected
before making changes to the Proportional Gain or Derivative
Gain.
Proportional Gain
Used to settle smaller errors by getting to the target droplet size more
quickly and with less noise in the system.
◄
Gain Too Low – getting close to the target droplet size will
be slow (unable to maintain within 10% of the target droplet
size). While the system is trying to reach a target droplet
size, the actual pressure will slowly get closer to the target to
avoid passing the target before reaching a steady-state.
◄
Gain Too High – getting close to the target droplet size will
be noisy or oscillate around the target droplet size. While the
system is trying to settle on a target droplet size, the actual
pressure may pass the target several times before reaching
a steady-state.
Figure 5-13: Proportional Gain
Red diamond illustrates stability or noise trying to reach the green
target diamond.
Derivative Gain
Used to settle larger errors by getting to the approximate target
droplet size more quickly. For example, if a boom section is turned on,
derivative gain then applies a one-time gain. Because the action of the
boom on was quick and the rate of change was short, derivative gain
is then stronger.
◄
Gain Too Low – getting close to the target droplet size will
be slow. While the system is trying to reach a target droplet
size, the actual pressure will slowly get closer to the target to
avoid passing the target before reaching a steady-state. This
often occurs when there is a large pressure change on the
system such as a droplet size engagement/disablement or
dramatic speed change.
◄
Gain Too High – getting close to the target droplet size will
be slow and cause the system to oscillate extremely rapidly.
While the system is trying to settle on a target droplet size,
the actual pressure may pass the target several times before
reaching a steady-state.
Figure 5-14: Derivative Gain
Red diamond illustrates stability or noise trying to reach the green
target diamond.
Gain Too Low
Gain Good
Gain Too High
Gain Too Low
Gain Good
Gain Too High