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A new duty cycle parallel control method for AC-DC converter with power factor correction is proposed. The duty cycle required to achieve unity power factor consists of two terms: current term and voltage term. They are calculated directly based on the reference current and sensed inductor current, input voltage and output voltage. It requires only one multiplication and three addition operations...
LIDAR (Light Detection and Ranging), like radar, is an active remote sensing system. This technology involves the use of pulses of laser light directed toward the ground and measures the time of pulse return. The return time for each pulse, back to the sensor is processed to calculate the variable distance between the sensors and the various surfaces present on the ground. The project is to create...
A high speed, high repetition rate, bipolar solid-state high voltage modulator is under development at Brookhaven National Laboratory for muon electron conversion (MECO) experiment. The modulator will be used to drive a RF kicker consisting of a pair of parallel deflecting plates. The principle design is based on the inductive-adder topology. This system requires a fast pulse rise and fall time of...
Presents a new approach for monitoring and diagnosing potential faults in the IC manufacturing process. A backpropagation neural network based diagnosing model is employed to synthesize the complicated mapping from process measurements to the unmeasurable process disturbances. This model is trained to detect significant shifts of the disturbances. Due to the inverse mapping diagnosis becomes very...
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