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Full-Text Articles in Engineering
Relative And Absolute Timing Jitter In Actively Mode-Locked Semiconductor Lasers, Dennis J. Derickson, A. Mar, J. E. Bowers
Relative And Absolute Timing Jitter In Actively Mode-Locked Semiconductor Lasers, Dennis J. Derickson, A. Mar, J. E. Bowers
Electrical Engineering
No abstract provided.
Architecture For A Human-Robot Symbiotic System, Fred W. Depiero, Wayne W. Manges, Reid L. Kress, Mike R. Kedl, William R. Hamel
Architecture For A Human-Robot Symbiotic System, Fred W. Depiero, Wayne W. Manges, Reid L. Kress, Mike R. Kedl, William R. Hamel
Electrical Engineering
This paper describes a human-robot symbiont that is under development at Oak Ridge National Laboratory. An overview of the symbiotic system is described that motivates the architecture that has been developed. The architecture is a hierarchical structure that consists of several expert systems which reside above a robot control interface. This interface allows the manipulator to be operated in both a teleoperated and autonomous mode. All these processes coexist with the lowest level of the hierarchy, which is a numerically intensive control algorithm. The architecture is implemented on five processors in a coarsely parallel system.
An Indirect Sensing Technique For Closed-Loop Diesel Fuel Quantity Control, Carl A. Maccarley, Walter D. Clark, Keay T. Nakae
An Indirect Sensing Technique For Closed-Loop Diesel Fuel Quantity Control, Carl A. Maccarley, Walter D. Clark, Keay T. Nakae
Electrical Engineering
Despite significant advances in electronic control technology applied to diesel engines, commercially available injection systems for automotive diesel engines remain limited by the open-loop mapping of the injection pump. An initial calibration is relied upon to translate a fuel delivery command to an actual fuel quantity. In practice, however, these two variables may be substantially different due to the effects of mechanical wear, repair, and the wide range of operating conditions. Possible ramifications of this discrepancy are excessive exhaust smoke due to overfueling, increased fuel consumption, degraded driveability, and poor idle characteristics. The major obstacle to closing the fuel control …
Self-Mode-Locking Of A Semiconductor Laser Using Positive Feedback, Dennis J. Derickson, R. J. Helkey, A. Mar, P. A. Morton, J. E. Bowers
Self-Mode-Locking Of A Semiconductor Laser Using Positive Feedback, Dennis J. Derickson, R. J. Helkey, A. Mar, P. A. Morton, J. E. Bowers
Electrical Engineering
A new mode-locking technique, self-mode-locking, is described which uses the detected optical pulses from the mode-locked laser as the active driving source. This technique forms narrow-width mode-locked optical pulses at low repetition rates without the use of a microwave synthesizer