Sample of Mini Project of EEE4120 for Sem 1 AY2021 You are engineer to design an AHU control system, a PID or On/Off module continuously monitors temperature sensor by using a process variable (PV) which is connected to an Al module to determine how much error exists between the temperature set point and the Process Variable (PV). Then, depending on the size of the error, it will calculate a command in percent which is typically sent to the AO module. The AO is connected directly to an electric actuator, as shown in below diagram connected to an electric-pneumatic transducer (EP8000) to modulate a pneumatic valve. AHU control components consists of motor fan driven module, cooling valve actuator, algorithm in control unit, temperature or other sensible sensor elements, etc. PV The icon for PID module: output range setpoint process variable PID output D dt out (s) PID gains EP8000 dt(s) reinitialize? (F) AO Alternatively, On/Off module: AD On/Off or PIDAI ON OFF Off - 0%; On - 100% The proposal should focus on the following aspects: 1. Design of System Block Diagram 2. Functional description 3. Write a programme statement/graphical languages 4. Drawing of programming flow charts 5. Simulation results 6. Human Machine Interface (HMI) graphics for illustration (optional) in advance 7. Further development if any 8. Conclusion EEE4120, Seml for AY2021 only Pages 2 of 3