Shaohua Hu

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A new digital control solution to motion control problems is proposed. It is based on a unique active disturbance rejection concept, where the disturbances are estimated using an extended state observer (ESO) and compensated in each sampling period. The dynamic compensation reduces the motion system to approximately a double integrator which can be easily(More)
DEDICATION To my parents and lovely wife… It is their anticipation that stimulates me to pursue high education! ACKNOWLEDGMENT First, I would like to express my deepest appreciation to my advisor, Dr. Zhiqiang Gao, for his supervision during the whole period of my study. It was an invaluable experience working in his industrially oriented projects and(More)
On the basis of analyzing the disadvantages and requirements of material supply of hydroelectric project, develops a material dispatching management information and decision support system based on both C/S model and B/S model. The three-hierarchy model and algorithm of material dispatching and the structure and function of the system are discussed in(More)
DEDICATED TO MY PARENTS ACKNOWLEGEMENT I would like to express my deepest appreciation to my advisor, Dr. Zhiqiang Gao, for giving me such a challenging opportunity, for his inspiring direction for the research and for his great support in all aspects of my study. Stankovic and Dr. Toshinori Munakata, who are on my committee, for their time in reviewing and(More)
This paper concerns with the challenge in high performance motion control systems, typified by the computer hard disk drive positioning control problem. Not only such systems seek very high accuracy, there is also an insatiable appetite for speed. To make the problem more challenging, the design has to address the actuator saturation issue. This is, in(More)
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