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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)
A practical and robust inter-domain marking scheme for IP traceback is proposed. We first identify six drawbacks of Probabilistic Packet Marking (PPM), and then contrive a synergic scheme to address all of them. To relieve the victim from the daunting computational overhead, we derive the optimal marking probability with respect to the number of packets(More)
In this paper, we propose a simultaneous covering induc-tive logic programming approach RPBL (Relational Paths-Based Learning). It uses relational paths as explanations for positive training examples to overcome the explosion problem existed in standard inductive logic programming. It benefits greatly from a simultaneous covering strategy, and avoids local(More)
— A new control method is presented to drive the drive axis of a MEMS gyroscope to resonance and regulate the output amplitude of the axis to a fixed level. It is based on a unique active disturbance rejection control (ADRC) strategy, which actively estimates and compensates for internal dynamic changes of the plant and external disturbances in real time.(More)
— In this paper, we propose a new mechanism to defend against Distributed Denial of Service (DDoS) attacks with path information rather than IP address information. Instead of the complete binary tree model, our proposal is based on the Four Color Theorem. The salient feature of the Theorem is that it allows color reuse so that even some portions of the map(More)