Implementation of an Improved Performance Integral H_۲/H_∞ Combined Predictive Control on a GSP

to enhance the closed loop performance in presence of disturbance, uncertainties and delay a double loop mixture of MPC and robust controller is proposed. This double loop controller ensures smooth tracking for a ۳-axis gyro-stabilized platform which has delay intrinsically. This control idea is suggested to eliminate high frequency disturbances and minimize steady state error with minimum power consumption in simulation and experiment. Proposed controller based on the combination of ℋ۲ and ℋ∞ controllers in the inner control loop shows the robustness of the proposed methodology. In the outer loop to have a good tracking performance, an integrated MPC is used to handle delay in system dynamics. Also, the main idea for dealing with uncertainties is using integral and derivative of platform attitude. In the proposed platform, the ℋ∞ controller is compared with ℋ∞/ℋ۲ controller in KNTU laboratory in theory and experiment. Results of experimental set up shows the same reaction of two controllers against disturbance and uncertainties in delayed system.

کلیدواژه ها:

۳-axis GSP ، Predictive control ، ℋ۲/ℋ∞ control ، double loop controller ، پایدارکننده ژیروسکوپی ۳ محوره ، کنترل پیش بین ، کنترل ∞ℋ۲/ℋ ، کنترل کننده حلقه دوگانه