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A novel adaptive sliding mode control with application to MEMS gyroscope
1Department of Electrical and Computer Engineering, University of Louisiana at Lafayette, Lafayette, LA 70504, United States. jtfei@yahoo.com
ISA Transactions
|November 18, 2008
Summary
This study introduces an adaptive sliding mode controller for MEMS gyroscopes. The new controller accurately estimates angular velocity and system parameters while robustly handling disturbances.
Area of Science:
- Control Systems Engineering
- Microelectromechanical Systems (MEMS)
Background:
- MEMS gyroscopes are crucial for inertial navigation but are susceptible to parameter variations and external disturbances.
- Existing control methods often struggle to provide robust performance and accurate parameter estimation simultaneously.
Purpose of the Study:
- To develop a novel adaptive sliding mode controller for MEMS gyroscopes.
- To enhance the estimation accuracy of angular velocity and system parameters.
- To improve the robustness of MEMS gyroscopes against uncertainties and disturbances.
Main Methods:
- Proposing an adaptive tracking controller utilizing a proportional and integral sliding surface.
- Developing an adaptive sliding mode control algorithm capable of real-time estimation of angular velocity, damping, and stiffness coefficients.
- Deriving a controller that accounts for both matched and unmatched uncertainties and disturbances.
- Establishing the stability of the closed-loop system.
Main Results:
- The proposed adaptive sliding mode control scheme demonstrates consistent estimation of gyroscope parameters, including angular velocity.
- The controller exhibits significant robustness to parameter variations and external disturbances.
- Numerical simulations verified the effectiveness of the developed control strategy.
Conclusions:
- The novel adaptive sliding mode controller offers superior performance for MEMS gyroscopes.
- The controller provides robust estimation and high resilience to system uncertainties.
- This advancement contributes to more reliable and accurate MEMS gyroscope applications.
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