In this paper, an H-infinity filtering problem is considered for a class of networked control systems (NCSs) with randomly occurring multiple packet dropouts. A modified mathematical model is proposed which is able to...
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ISBN:
(纸本)9781538621783
In this paper, an H-infinity filtering problem is considered for a class of networked control systems (NCSs) with randomly occurring multiple packet dropouts. A modified mathematical model is proposed which is able to describe the randomly occurring consecutive packet losses with known maximum number of the dropouts. Moreover, with the proposed model, the considered packet loss probabilities can be either the same or different. According to the mathematical model, an H-infinity filter is designed for the considered NCSs with known maximum number of consecutive packet dropouts. Simulation results show the effectiveness of the proposed H-infinity filtering method.
In this paper, a set-membership filtering method is proposed in order to effectively track an Unmanned Surface Vessel (USV) in a dual antenna GPS positioning system. According to the relationship between position, vel...
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ISBN:
(纸本)9781538621783
In this paper, a set-membership filtering method is proposed in order to effectively track an Unmanned Surface Vessel (USV) in a dual antenna GPS positioning system. According to the relationship between position, velocity and the heading direction, a mathematical model is established to describe the considered USV system. The disturbances of wind, wave and current are modeled as unknown-but-bounded noises and a set-membership filtering scheme is designed which enables the states of the USV to reside in the ellipsoidal estimation sets at each time instant. A simulation experiment is conducted, which assumes that the USV is still in the water with the disturbances of wind, wave and current. Example results are carried out to illustrate the effectiveness of the proposed method.
A LED filament light has a bulb shell, a base portion, a filament module, a top spreading structure, a bottom spreading structure, a lamp cap and a driving piece. The filament module is placed in the containing space ...
标准号:
US2019032858(A1)
A LED filament light has a bulb shell, a base portion, a filament module, a top spreading structure, a bottom spreading structure, a lamp cap and a driving piece. The filament module is placed in the containing space formed by the bulb shell and base portion. The filament module is composed of a plurality of filaments. The top of the plurality of filaments connects to the top spreading structure. The bottom spreading structure extends from the base portion, the bottom of the plurality of filaments connect to the bottom spreading structure. The top spreading structure is supported only by the plurality of filaments. The driving piece is placed in the lamp cap to provide electric power required for the plurality of filaments to illuminate
In this letter, the modified small reflection theory is further extended to the design of a multifrequency transformer with an arbitrary frequency and real impedance transform ratio, by mapping small reflection coeffi...
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In this letter, the modified small reflection theory is further extended to the design of a multifrequency transformer with an arbitrary frequency and real impedance transform ratio, by mapping small reflection coefficients between 2N + m- and 2N-section transformers. Due to the introduced mapping, the dominated equation of the 2N + m-section transformer is reduced to that of the 2N-section transformer without introducing an additional matching frequency among the desired frequency ratio range. For verification, a penta-frequency transformer is implemented and measured. The measured results agree closely with the calculated and simulated results.
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