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The finite‐time robust fault‐tolerant control problem is addressed for a class of perturbed linear systems with actuator faults and input amplitude saturations. A compensation control strategy is proposed to eliminate the effects of actuator faults and non‐linear disturbance‐like inputs within a finite‐time, as well as to ensure the control inputs be limited within a desired constraint. Based on Lyapunov stability theory, it is shown that system states can converge to a small region in the cases of actuator faults and saturations by choosing suitable control parameters. Some relationships among convergence bounds, actuator faults and amplitude limits, as well as the control parameters are studied deeply and illustrated explicitly with formulas. Simulations of a linearised F‐18 longitudinal dynamical control model are given to verify the effectiveness of the proposed method. [ABSTRACT FROM AUTHOR]

A novel tag antenna with a rectangular-loop feed, a bent meandered strip and additional patches is designed and analyzed in ultra high frequency (UHF) radio frequency identification (RFID) bands to provide broadband, high gain, and size-reduction performance simultaneously. It is designed to operate at UHF RFID bandwidths, with resonant frequencies of 842, 868, and 915 MHz, respectively. The dimension of the antenna with resonant frequencies of 915 MHz is around 78 × 23 mm2, which shows near linear phase characteristics. Simulated and measured results show the proposed antenna can obtain 100 MHz bandwidth under the condition of voltage standing wave ration less than 2 and 1.6 dBi gain for worldwide UHF RFID bands. In addition, the antenna provides a good radiation pattern. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1234-1236, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26804 [ABSTRACT FROM AUTHOR]

A novel radio frequency identification tag antenna at 915 MHz using a bent meandered strip, a U-microstrip patch and an adjustable double T-feed is proposed, which is suitable for attaching to dry objects with various content. The antenna's size is 21.2 × 63.0 mm2. The antenna achieves 400 MHz bandwidths, 1.60 dBi gains, and a good radiation pattern. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:2697-2699, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26332 [ABSTRACT FROM AUTHOR]