Design of FOPID Controller for Pneumatic Control Valve Based on Improved BBO Algorithm.

Area of Science:

• Control Engineering
• Industrial Automation
• Applied Mathematics

Background:

• Pneumatic control valves in industrial processes often suffer from nonlinearity and inaccuracy.
• Existing control methods may not adequately address these modeling challenges.

Purpose of the Study:

• To propose a novel valve position control method using a fractional-order PID controller.
• To improve the accuracy and response speed of pneumatic control valve models.

Main Methods:

• Analysis of pneumatic control valve working principles and mathematical model establishment.
• Development of an improved biogeography-based optimization algorithm for fractional-order PID controller parameter tuning.
• Application of the optimized controller for control valve system model identification.

Main Results:

• The proposed fractional-order PID controller demonstrated superior performance over the integer-order PID controller.
• Faster response speed and enhanced control accuracy were achieved in simulations and experiments.
• The method effectively addressed nonlinearity and inaccuracy issues in pneumatic control valve modeling.

Conclusions:

• The fractional-order PID controller offers a significant improvement for pneumatic control valve position control.
• The enhanced biogeography-based optimization algorithm provides effective parameter tuning for complex controllers.
• This approach meets the demanding requirements of modern industrial control systems.