Haixiang Zhao

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One challenge of predicting building energy consumption is to accelerate model training when the dataset is very large. This paper proposes an efficient parallel implementation of support vector regression based on decomposition method for solving such problems. The parallelization is performed on the most time-consuming work of training, i.e., to update(More)
We describe a switched-gain control (SGC) technique for improving the settling time and peak overshoot of phase-locked loops (PLLs). We improve upon previous work by designing the controller to work with time-varying inputs, such as linear phase ramps in PLLs. We then develop circuits to implement the resulting control laws. Our results are supported by(More)
This paper introduces a highly-integrated CMOS transceiver for a variety of active structural health monitoring (SHM) applications. This proposed chip can generate the electrical actuation signals for piezoelectric transducers as well as provide broadband low-noise reception for reflected or transmitted waves on the same or another transducer. The(More)
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