Automatic Room Comfort Controller

Article Sidebar

Main Article Content

Engr. Norman F. Fajardo
Engr. Glazen Carey M. Perez
Dr. Ma. Magdalena V. Gatdula

The Automatic Room Comfort Controller was developed using a fuzzy logic–based control system to regulate indoor environmental conditions. The system uses three primary inputs—temperature, humidity, and occupancy—to generate two control outputs, namely Fan/AC speed and Window Position. The controller was designed and simulated using MATLAB’s Fuzzy Logic Designer, following defined membership functions and IF–THEN rule sets. Simulation results demonstrated that the fuzzy controller was able to adapt system responses according to varying room conditions, maintaining comfort while minimizing excessive energy use. The behavior observed across multiple input test scenarios showed that the system responded smoothly and consistently, avoiding abrupt switching common in traditional fixed threshold HVAC systems. Overall, the fuzzy logic model proved effective for real-time intelligent indoor climate regulation. 

Automatic Room Comfort Controller. (2025). International Journal of Latest Technology in Engineering Management & Applied Science, 14(11), 539-545. https://doi.org/10.51583/IJLTEMAS.2025.1411000048

Downloads

References

Fajardo, N., & Perez, G. (2025). Automatic Room Comfort Controller: System concept and design framework (Week 2). Bulacan State University.

Fajardo, N., & Perez, G. (2025). Automatic Room Comfort Controller: Simulation and implementation results (Week 3). Bulacan State University.

Al-Sakkaf, A., & Al-Hamadi, A. (2023). Fuzzy logic–based HVAC control system for energy-efficient smart buildings. Journal of Building Engineering, 75, 106458. https://doi.org/10.1016/j.jobe.2023.106458

Goyal, G., Sharma, K., & Singh, A. (2021). Occupancy-driven fuzzy control strategies for improving HVAC efficiency in smart indoor environments. Automation in Construction, 130, 103894.

https://doi.org/10.1016/j.autcon.2021.103894

Nguyen, T. M., & Bui, D. T. (2020). An optimized fuzzy logic controller for improving indoor comfort and reducing energy demand. Applied Soft Computing, 96, 106613. https://doi.org/10.1016/j.asoc.2020.106613

Rahman, M. F., Chowdhury, S., & Kabir, M. H. (2024). Design and simulation of a fuzzy inference system for indoor temperature regulation using MATLAB. International Journal of Intelligent Systems and Applications in Engineering, 12(1), 45–52. https://doi.org/10.18201/ijisae.2024123

Zhang, Y., Ren, H., & Liu, P. (2022). Adaptive thermal comfort control using fuzzy logic and IoT-based sensing in smart buildings. Energy and Buildings, 278, 112512.https://doi.org/10.1016/j.enbuild.2022.112512

Mendel, J. M. (2017). Uncertain rule-based fuzzy systems: Introduction and new directions (2nd ed.). Springer. Zadeh, L. A. (1965). Fuzzy sets. Information and Control, 8(3), 338–353

Article Details

How to Cite

Automatic Room Comfort Controller. (2025). International Journal of Latest Technology in Engineering Management & Applied Science, 14(11), 539-545. https://doi.org/10.51583/IJLTEMAS.2025.1411000048