Integrated H_∞ filtering bumpless transfer control for switched linear systems.

Area of Science:

• Control Systems Engineering
• Systems Theory
• Aerospace Engineering

Background:

• Switched linear systems present challenges in control design due to inherent switching dynamics.
• Achieving robust filtering (H∞) and smooth control transitions (bumpless transfer) simultaneously is a significant problem.

Purpose of the Study:

• To develop an integrated control strategy for switched linear systems that achieves H∞ filtering and minimizes control bumps.
• To introduce a new quantitative measure for bumpless transfer performance.

Main Methods:

• A novel description for bumpless transfer performance was formulated, considering both relative and absolute control bump suppression.
• A joint design approach was employed, integrating switching logic, filters, and filter-based controllers.
• A criterion was developed to guarantee both H∞ filtering and bumpless transfer properties.

Main Results:

• The proposed integrated strategy effectively suppresses control bumps induced by system switching.
• The H∞ filtering property is maintained throughout the switching process.
• The developed criterion ensures the desired performance objectives are met.

Conclusions:

• The integrated H∞ filtering bumpless transfer control strategy is effective for switched linear systems.
• The approach offers a viable solution for applications requiring both robust filtering and smooth control, such as turbofan engine control.