# Optimal fractional order PID controller performance in chaotic system of HIV disease: particle swarm and genetic algorithms optimization method

Document Type : Research Paper

Authors

Faculty of mathematical sciences, Shahrood university of technology, Shahrood, Semnan, Iran.

Abstract

The present study aims to investigate the optimal fractional order PID controller performance in the chaotic system of HIV disease fractional order using the Particle Swarm optimization and Genetic algorithm method. Differential equations were used to represent the chaotic behavior associated with HIV. The optimal fractional order of the PID controller was constructed, and its performance in the chaotic system with HIV fractional order was tested. Optimization methods were used to get PID control coefficients from particle swarm and genetic algorithms. Findings revealed that the equations for the HIV disease model are such that the system’s behavior is greatly influenced by the number of viruses produced by infected cells, such that if the number of viruses generated by infected cells exceeds 202, the disease’s behavior is such that the virus and disease spread. For varying concentrations of viruses, the controller created for this disease does not transmit the disease.

Keywords

#### References

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### History

• Receive Date: 14 April 2022
• Revise Date: 29 September 2022
• Accept Date: 02 October 2022