High-Speed Temperature Control Method for MEMS Thermal Gravimetric Analyzer Based on Dual Fuzzy PID Control

Area of Science:

• Analytical Chemistry
• Materials Science
• Control Engineering

Background:

• Traditional thermal gravimetric analyzers (TGA) suffer from thermal lag, limiting heating rates.
• Micro-electro-mechanical system thermal gravimetric analyzers (MEMS TGA) offer advantages like on-chip heating and high mass sensitivity.
• MEMS TGA's small heating area and structure eliminate thermal lag, enabling faster heating.

Purpose of the Study:

• To develop a high-speed temperature control method for MEMS TGA.
• To address system nonlinearities and minimize overshoot in MEMS TGA temperature control.
• To improve the overall heating performance of MEMS TGA.

Main Methods:

• Proposal of a dual fuzzy proportional-integral-derivative (PID) control strategy.
• Real-time adjustment of PID parameters using fuzzy logic control.
• Simulation and experimental validation of the proposed control method.

Main Results:

• The dual fuzzy PID control method demonstrated a faster response speed compared to traditional PID control.
• The proposed method significantly reduced overshoot during temperature control.
• Improved heating performance was observed in MEMS TGA utilizing the dual fuzzy PID control.

Conclusions:

• The dual fuzzy PID control is an effective method for high-speed temperature control in MEMS TGA.
• This approach overcomes limitations of traditional PID control in MEMS TGA applications.
• The enhanced temperature control significantly boosts the heating performance of MEMS TGA.