The scenario
Designing an IoT-based greenhouse automation system with a manual override feature.
What is in this drawing
Read the decisions behind it.
01
Model the manual override as an additive disturbance to the control signal.
02
Use a sum junction to combine controller output and manual override before the actuators.
03
Incorporate feedback from greenhouse sensors for closed-loop control.
This block diagram can be reused for any closed-loop environmental control system with manual intervention, such as HVAC, irrigation, or climate control.
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