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In order to reduce the effect of the parameters uncertainties and load disturbances on the brushless doubly-fed motor (BDFM), a Hinfin speed controller is designed by the mixed sensitivity control theory. The proposed Hinfin controller combined with the selection of mixed sensitivity weighting functions is better in robustness, and raises the respond speed of the system to the input signal. Simulation...
This paper analyzes the effects of the materials, the driven voltage, the switch height, the width of the CPW signal line and the quality factor on the switching time and the dynamic behavior of electrostatic driven RF MEMS capacitive switches for the microwave distributed MEMS shifters to reduce the switching time and the impact velocity, and increase the capacitive ratio
The phase center of ultra-wide band (UWB) antenna is an important factor that affects its performance in the time domain. For UWB antenna applications, the phase center is required to be stable as the beam width and frequency varies at the same time. Conventionally, the phase center can be deduced according to the directional diagram, but not all antennas can be implemented this way because of their...
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