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In this paper, time-delay effect on continuous approximation of sliding mode control (SMC) systems is studied in depth. The switching band that bound the zigzagging behaviors due to control switching around the switching manifold is constructed. Robust control theory is employed to develop a sufficient condition for the asymptotical stability of the system. Simulation is conducted to verify the theoretical...
In this paper, we propose a leveling algorithm based on extended Kalman particle filter (EKPF) for compensating the initial attitude error and the accumulated error. The meaning of leveling in the paper is to acquire two attitude angles of the roll and the pitch of the aircraft during its motion. The EKPF algorithm is applied to our inertial attitude reference unit based on the hemispherical resonator...
The line-of-sight (LOS) stabilization control based on gyro stabilized platform is required to isolate LOS from the movement and vibration of carrier and ensure pointing and tracking for target in electro-optical tracking system. In this paper, a fractional-order PI (FOPI) controller is applied in the design of stabilization loop of LOS stabilization system for the first time, based on the analysis...
The problem of Hankel norm model reduction for discrete-time systems with time-varying state delay is investigated. For a given stable system, this paper focuses on constructing stable reduced-order models under the Hankel norm error criterion. Two different approaches are proposed to solve this problem. One is based on the cone complementarity linearization idea, which casts the model reduction into...
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